{"id":9358,"date":"2025-12-11T01:34:55","date_gmt":"2025-12-11T01:34:55","guid":{"rendered":"https:\/\/www.omch.com\/?p=9358"},"modified":"2025-12-11T01:34:56","modified_gmt":"2025-12-11T01:34:56","slug":"dcs-vs-plc","status":"publish","type":"post","link":"https:\/\/www.omch.com\/vi\/dcs-vs-plc\/","title":{"rendered":"DCS v\u00e0 PLC: Gi\u1ea3i ph\u00e1p n\u00e0o ph\u00f9 h\u1ee3p v\u1edbi ng\u00e0nh c\u1ee7a b\u1ea1n?"},"content":{"rendered":"

M\u1ed9t trong nh\u1eefng quy\u1ebft \u0111\u1ecbnh kh\u00f3 kh\u0103n v\u00e0 quan tr\u1ecdng nh\u1ea5t trong l\u0129nh v\u1ef1c t\u1ef1 \u0111\u1ed9ng h\u00f3a l\u00e0 vi\u1ec7c l\u1ef1a ch\u1ecdn gi\u1eefa H\u1ec7 th\u1ed1ng \u0111i\u1ec1u khi\u1ec3n ph\u00e2n t\u00e1n (DCS) v\u00e0 B\u1ed9 \u0111i\u1ec1u khi\u1ec3n logic l\u1eadp tr\u00ecnh (PLC). \u0110\u00e2y l\u00e0 s\u1ef1 l\u1ef1a ch\u1ecdn quy\u1ebft \u0111\u1ecbnh c\u00e1ch th\u1ee9c ho\u1ea1t \u0111\u1ed9ng c\u1ee7a c\u01a1 s\u1edf s\u1ea3n xu\u1ea5t, c\u00e1ch v\u1eadn h\u00e0nh c\u1ee7a m\u00e1y m\u00f3c, lu\u1ed3ng d\u1eef li\u1ec7u, v\u00e0 t\u1ea5t nhi\u00ean, kh\u1ea3 n\u0103ng sinh l\u1eddi c\u1ee7a d\u00e2y chuy\u1ec1n s\u1ea3n xu\u1ea5t.<\/p>\n\n\n\n

Vi\u1ec7c tuy\u00ean b\u1ed1 h\u1ec7 th\u1ed1ng n\u00e0o l\u00e0 l\u1ef1a ch\u1ecdn \u201ct\u1ed1t h\u01a1n\u201d \u0111\u1ed3ng ngh\u0129a v\u1edbi vi\u1ec7c ph\u1edbt l\u1edd th\u1ef1c t\u1ebf c\u1ee7a ng\u00e0nh k\u1ef9 thu\u1eadt v\u00e0 s\u1ef1 ph\u1ee9c t\u1ea1p tinh t\u1ebf c\u1ee7a n\u00f3. Nhu c\u1ea7u v\u00e0 s\u1edf th\u00edch c\u1ee5 th\u1ec3 c\u1ee7a b\u1ea1n s\u1ebd quy\u1ebft \u0111\u1ecbnh l\u1ef1a ch\u1ecdn ph\u00f9 h\u1ee3p. \u0110i\u1ec1u n\u00e0y ph\u1ee5 thu\u1ed9c v\u00e0o quy m\u00f4 nh\u00e0 m\u00e1y, m\u1ee9c \u0111\u1ed9 ph\u1ee9c t\u1ea1p c\u1ee7a quy tr\u00ecnh, ng\u00e2n s\u00e1ch c\u0169ng nh\u01b0 m\u1ee5c ti\u00eau d\u00e0i h\u1ea1n c\u1ee7a b\u1ea1n. V\u00ed d\u1ee5, m\u1ed9t h\u1ec7 th\u1ed1ng ho\u1ea1t \u0111\u1ed9ng ho\u00e0n h\u1ea3o trong m\u1ed9t nh\u00e0 m\u00e1y l\u1eafp r\u00e1p \u00f4 t\u00f4 c\u00f3 th\u1ec3 s\u1ebd g\u00e2y ra nh\u1eefng b\u1ea5t c\u1eadp \u0111\u00e1ng ti\u1ebfc t\u1ea1i m\u1ed9t nh\u00e0 m\u00e1y l\u1ecdc h\u00f3a d\u1ea7u. M\u1ee5c ti\u00eau c\u1ee7a b\u00e0i vi\u1ebft n\u00e0y l\u00e0 lo\u1ea1i b\u1ecf nh\u1eefng th\u00f4ng tin nhi\u1ec5u v\u00e0 tr\u00ecnh b\u00e0y cho b\u1ea1n m\u1ed9t so s\u00e1nh trung th\u1ef1c, r\u00f5 r\u00e0ng, gi\u00fap b\u1ea1n kh\u00f4ng ch\u1ec9 t\u00ecm ra h\u1ec7 th\u1ed1ng \u2018t\u1ed1t nh\u1ea5t\u2019, m\u00e0 c\u00f2n l\u00e0 h\u1ec7 th\u1ed1ng ph\u00f9 h\u1ee3p nh\u1ea5t v\u1edbi th\u1ef1c t\u1ebf c\u1ee7a b\u1ea1n.<\/p>\n\n\n\n

S\u1ef1 kh\u00e1c bi\u1ec7t v\u1ec1 ki\u1ebfn tr\u00fac: \u0110i\u1ec1u khi\u1ec3n t\u1eadp trung so v\u1edbi \u0111i\u1ec1u khi\u1ec3n ph\u00e2n t\u00e1n<\/h2>\n\n\n\n

\u0110\u1ec3 \u0111\u00e1nh gi\u00e1 t\u00ednh n\u0103ng, tr\u01b0\u1edbc ti\u00ean c\u1ea7n ph\u1ea3i ph\u00e2n t\u00edch c\u1ea5u tr\u00fac. Vi\u1ec7c l\u1ef1a ch\u1ecdn gi\u1eefa PLC v\u00e0 DCS kh\u00f4ng ch\u1ec9 \u0111\u01a1n thu\u1ea7n l\u00e0 v\u1ea5n \u0111\u1ec1 v\u1ec1 th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt; \u0111\u00f3 l\u00e0 s\u1ef1 l\u1ef1a ch\u1ecdn gi\u1eefa c\u00e1c ph\u01b0\u01a1ng ph\u00e1p ti\u1ebfp c\u1eadn ho\u00e0n to\u00e0n kh\u00e1c nhau v\u1ec1 h\u1ec7 th\u1ed1ng \u0111i\u1ec1u khi\u1ec3n li\u00ean quan \u0111\u1ebfn c\u00e1ch th\u1ee9c v\u1eadn h\u00e0nh c\u1ee7a m\u1ed9t nh\u00e0 m\u00e1y. Trong l\u0129nh v\u1ef1c t\u1ef1 \u0111\u1ed9ng h\u00f3a c\u00f4ng nghi\u1ec7p, vi\u1ec7c hi\u1ec3u r\u00f5 nh\u1eefng \u0111i\u1ec3m kh\u00e1c bi\u1ec7t c\u1ed1t l\u00f5i gi\u1eefa c\u00e1c h\u1ec7 th\u1ed1ng \u0111i\u1ec1u khi\u1ec3n c\u00f4ng nghi\u1ec7p n\u00e0y l\u00e0 m\u1ed9t nhi\u1ec7m v\u1ee5 quan tr\u1ecdng c\u1ee7a k\u1ef9 s\u01b0.<\/p>\n\n\n\n

Tri\u1ebft l\u00fd c\u1ed1t l\u00f5i: DCS so v\u1edbi PLC<\/h3>\n\n\n\n

C\u00e1i <\/strong>PLC<\/strong> (<\/strong>B\u1ed9 \u0111i\u1ec1u khi\u1ec3n logic l\u1eadp tr\u00ecnh \u0111\u01b0\u1ee3c<\/strong>)<\/strong> l\u00e0 m\u1ed9t h\u1ec7 th\u1ed1ng m\u00e1y t\u00ednh c\u00f4ng nghi\u1ec7p m\u1ea1nh m\u1ebd v\u00e0 t\u1ed1c \u0111\u1ed9 cao. \u0110\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 ho\u1ea1t \u0111\u1ed9ng trong m\u00f4i tr\u01b0\u1eddng c\u00f4ng nghi\u1ec7p kh\u1eafc nghi\u1ec7t, h\u1ec7 th\u1ed1ng n\u00e0y \u0111\u01b0\u1ee3c ph\u00e1t tri\u1ec3n nh\u1eb1m thay th\u1ebf c\u00e1c thi\u1ebft b\u1ecb logic r\u01a1-le th\u1ebf h\u1ec7 c\u0169. \u0110\u00e2y l\u00e0 gi\u1ea3i ph\u00e1p h\u00e0ng \u0111\u1ea7u kh\u00f4ng c\u00f3 \u0111\u1ed1i th\u1ee7 trong l\u0129nh v\u1ef1c s\u1ea3n xu\u1ea5t r\u1eddi r\u1ea1c. H\u1ec7 th\u1ed1ng n\u00e0y \u0111\u1eb7c bi\u1ec7t ph\u00f9 h\u1ee3p v\u1edbi c\u00e1c t\u00e1c v\u1ee5 l\u1eb7p \u0111i l\u1eb7p l\u1ea1i v\u1edbi t\u1ed1c \u0111\u1ed9 cao, ch\u1eb3ng h\u1ea1n nh\u01b0 \u0111i\u1ec1u khi\u1ec3n t\u1ef1 \u0111\u1ed9ng v\u1edbi \u0111\u1ed9 tr\u1ec5 t\u00ednh b\u1eb1ng mili gi\u00e2y. \u0110\u1ed1i v\u1edbi ch\u00fang t\u00f4i, h\u1ec7 th\u1ed1ng PLC t\u1eadp trung v\u00e0o c\u00e1c m\u00e1y m\u00f3c ri\u00eang l\u1ebb ho\u1eb7c d\u00e2y chuy\u1ec1n l\u1eafp r\u00e1p trong m\u1ed9t d\u00e2y chuy\u1ec1n s\u1ea3n xu\u1ea5t. C\u00e1c PLC hi\u1ec7n \u0111\u1ea1i qu\u1ea3n l\u00fd c\u00e1c t\u00e1c v\u1ee5 \u0111i\u1ec1u khi\u1ec3n r\u1eddi r\u1ea1c n\u00e0y v\u1edbi th\u1eddi gian qu\u00e9t c\u1ef1c k\u1ef3 nhanh, \u0111\u1ea3m b\u1ea3o kh\u1ea3 n\u0103ng \u0111i\u1ec1u khi\u1ec3n ch\u00ednh x\u00e1c.<\/p>\n\n\n\n

C\u00e1i <\/strong>DCS<\/strong> (<\/strong>H\u1ec7 th\u1ed1ng \u0111i\u1ec1u khi\u1ec3n ph\u00e2n t\u00e1n<\/strong>)<\/strong> \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 \u0111i\u1ec1u khi\u1ec3n to\u00e0n b\u1ed9 m\u00f4i tr\u01b0\u1eddng \u0111i\u1ec1u khi\u1ec3n quy tr\u00ecnh. Kh\u00f4ng ch\u1ec9 l\u00e0 m\u1ed9t m\u00f4-\u0111un \u0111\u1ed9c l\u1eadp, \u0111\u00e2y l\u00e0 m\u1ed9t h\u1ec7 th\u1ed1ng \u0111i\u1ec1u khi\u1ec3n gi\u00e1m s\u00e1t n\u1eb1m trong m\u1ed9t h\u1ec7 th\u1ed1ng t\u1ed5ng th\u1ec3, t\u00edch h\u1ee3p b\u1ed9 x\u1eed l\u00fd, giao di\u1ec7n \u0111i\u1ec1u khi\u1ec3n v\u00e0 tr\u1ea1m l\u00e0m vi\u1ec7c k\u1ef9 thu\u1eadt th\u00e0nh m\u1ed9t m\u00f4i tr\u01b0\u1eddng \u0111i\u1ec1u khi\u1ec3n th\u1ed1ng nh\u1ea5t. \u1ede \u0111\u00e2y, tr\u1ecdng t\u00e2m \u0111\u01b0\u1ee3c \u0111\u1eb7t v\u00e0o c\u00e1c quy tr\u00ecnh c\u00f4ng nghi\u1ec7p, c\u1ee5 th\u1ec3 l\u00e0 c\u00e1c quy tr\u00ecnh li\u00ean t\u1ee5c v\u00e0 c\u00e1c quy tr\u00ecnh ph\u1ee9c t\u1ea1p nh\u01b0 trong l\u0129nh v\u1ef1c s\u1ea3n xu\u1ea5t \u0111i\u1ec7n, nh\u00e0 m\u00e1y h\u00f3a ch\u1ea5t ho\u1eb7c x\u1eed l\u00fd n\u01b0\u1edbc. Ki\u1ebfn tr\u00fac DCS \u0111\u01b0\u1ee3c x\u00e2y d\u1ef1ng \u0111\u1ec3 ho\u1ea1t \u0111\u1ed9ng li\u00ean t\u1ee5c, qu\u1ea3n l\u00fd c\u00e1c v\u00f2ng \u0111i\u1ec1u khi\u1ec3n v\u00e0 l\u01b0u l\u01b0\u1ee3ng tr\u00ean to\u00e0n b\u1ed9 quy tr\u00ecnh s\u1ea3n xu\u1ea5t.<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

Ki\u1ebfn tr\u00fac d\u1eef li\u1ec7u: C\u00e1c \u201ch\u00f2n \u0111\u1ea3o\u201d t\u1ef1 \u0111\u1ed9ng h\u00f3a so v\u1edbi c\u01a1 s\u1edf d\u1eef li\u1ec7u th\u1ed1ng nh\u1ea5t<\/h3>\n\n\n\n

S\u1ef1 kh\u00e1c bi\u1ec7t ch\u00ednh n\u1eb1m \u1edf c\u00e1ch ti\u1ebfp c\u1eadn c\u1ee7a hai b\u00ean trong vi\u1ec7c thu th\u1eadp v\u00e0 qu\u1ea3n l\u00fd d\u1eef li\u1ec7u.<\/p>\n\n\n\n

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  • PLC<\/strong> nh\u01b0 m\u1ed9t h\u00f2n \u0111\u1ea3o:<\/strong> M\u1ed7i PLC c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c hi\u1ec7u chu\u1ea9n nh\u01b0 m\u1ed9t \u0111\u01a1n v\u1ecb \u0111\u1ed9c l\u1eadp m\u1ea1nh m\u1ebd, hay c\u00f2n g\u1ecdi l\u00e0 \u201cb\u1ed9 n\u00e3o\u201d. M\u1ed7i PLC ho\u1ea1t \u0111\u1ed9ng nh\u01b0 m\u1ed9t \u2018h\u00f2n \u0111\u1ea3o t\u1ef1 \u0111\u1ed9ng h\u00f3a\u2019 c\u00f3 th\u1ec3 v\u1eadn h\u00e0nh m\u1ed9t m\u00e1y m\u00f3c ri\u00eang l\u1ebb v\u1edbi hi\u1ec7u su\u1ea5t cao \u2014 ch\u1eb3ng h\u1ea1n nh\u01b0 m\u00e1y n\u00e9n kh\u00ed ho\u1eb7c thi\u1ebft b\u1ecb \u0111\u00f3ng g\u00f3i \u2014 m\u1ed9t c\u00e1ch \u0111\u1ed9c l\u1eadp. Tuy nhi\u00ean, trong m\u00f4i tr\u01b0\u1eddng t\u1ef1 \u0111\u1ed9ng h\u00f3a quy tr\u00ecnh, vi\u1ec7c c\u00f3 t\u1edbi n\u0103m m\u01b0\u01a1i \u201ch\u00f2n \u0111\u1ea3o\u201d nh\u01b0 v\u1eady s\u1ebd t\u1ea1o ra s\u1ef1 ph\u1ee9c t\u1ea1p. M\u1ed7i \u201ch\u00f2n \u0111\u1ea3o\u201d n\u00e0y c\u1ea7n \u0111\u01b0\u1ee3c l\u1eadp b\u1ea3n \u0111\u1ed3 ri\u00eang bi\u1ec7t \u0111\u1ec3 thi\u1ebft l\u1eadp m\u1ed1i quan h\u1ec7 l\u1eadp tr\u00ecnh ph\u1ee9c t\u1ea1p v\u1edbi h\u1ec7 th\u1ed1ng SCADA nh\u1eb1m m\u1ee5c \u0111\u00edch hi\u1ec3n th\u1ecb th\u00f4ng tin.<\/li>\n\n\n\n
  • DCS nh\u01b0 m\u1ed9t l\u1ee5c \u0111\u1ecba:<\/strong> H\u1ec7 th\u1ed1ng DCS ho\u1ea1t \u0111\u1ed9ng nh\u01b0 m\u1ed9t h\u1ec7 th\u1ed1ng th\u1ed1ng nh\u1ea5t. T\u1ea5t c\u1ea3 c\u00e1c b\u1ed9 \u0111i\u1ec1u khi\u1ec3n \u0111\u1ec1u s\u1eed d\u1ee5ng chung m\u1ed9t c\u01a1 s\u1edf d\u1eef li\u1ec7u l\u01b0u tr\u1eef d\u1eef li\u1ec7u \u0111a ng\u01b0\u1eddi d\u00f9ng to\u00e0n c\u1ee5c. Vi\u1ec7c thi\u1ebft l\u1eadp m\u1ed9t th\u1ebb (tag) b\u00ean trong b\u1ed9 \u0111i\u1ec1u khi\u1ec3n s\u1ebd \u0111\u1ed3ng th\u1eddi \u0111\u01b0\u1ee3c hi\u1ec3n th\u1ecb tr\u00ean m\u00e0n h\u00ecnh c\u1ee7a ng\u01b0\u1eddi v\u1eadn h\u00e0nh, h\u1ec7 th\u1ed1ng l\u01b0u tr\u1eef l\u1ecbch s\u1eed (historian) v\u00e0 h\u1ec7 th\u1ed1ng b\u00e1o \u0111\u1ed9ng. Thay v\u00ec l\u00e0 m\u1ed9t t\u1eadp h\u1ee3p c\u00e1c \u201ch\u00f2n \u0111\u1ea3o\u201d ri\u00eang l\u1ebb, \u0111\u00e2y l\u00e0 m\u1ed9t \u201cl\u1ee5c \u0111\u1ecba\u201d th\u1ed1ng nh\u1ea5t. \u0110i\u1ec1u n\u00e0y khi\u1ebfn h\u1ec7 th\u1ed1ng tr\u1edf n\u00ean v\u01b0\u1ee3t tr\u1ed9i trong c\u00e1c ng\u00e0nh c\u00f4ng nghi\u1ec7p quy tr\u00ecnh, n\u01a1i to\u00e0n b\u1ed9 nh\u00e0 m\u00e1y c\u1ea7n n\u1eafm r\u00f5 t\u00ecnh tr\u1ea1ng ho\u1ea1t \u0111\u1ed9ng c\u1ee7a t\u1eebng khu v\u1ef1c quy tr\u00ecnh c\u1ee5 th\u1ec3.<\/li>\n<\/ul>\n\n\n\n

    Qu\u1ea3n l\u00fd r\u1ee7i ro: L\u1ed7i t\u1eadp trung so v\u1edbi b\u1ea3o m\u1eadt ph\u00e2n t\u00e1n<\/h3>\n\n\n\n

    Hai h\u1ec7 th\u1ed1ng n\u00e0y c\u00f3 c\u00e1ch ti\u1ebfp c\u1eadn s\u1ef1 c\u1ed1 kh\u00e1c nhau.<\/p>\n\n\n\n

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    • Ki\u1ebfn tr\u00fac PLC:<\/strong> Theo truy\u1ec1n th\u1ed1ng, PLC \u0111\u00f3ng vai tr\u00f2 l\u00e0 trung t\u00e2m \u0111i\u1ec1u khi\u1ec3n. N\u1ebfu b\u1ed9 \u0111i\u1ec1u khi\u1ec3n ch\u00ednh g\u1eb7p s\u1ef1 c\u1ed1, to\u00e0n b\u1ed9 ph\u1ea7n h\u1ec7 th\u1ed1ng do n\u00f3 \u0111i\u1ec1u khi\u1ec3n s\u1ebd ng\u1eebng ho\u1ea1t \u0111\u1ed9ng. \u0110\u00e2y l\u00e0 m\u1ed1i quan h\u1ec7 ki\u1ec3u \u201cm\u1ed9t b\u1ed9 n\u00e3o, m\u1ed9t c\u01a1 th\u1ec3\u201d, c\u00f3 kh\u1ea3 n\u0103ng t\u1ea1o ra m\u1ed9t \u0111i\u1ec3m l\u1ed7i duy nh\u1ea5t.<\/li>\n\n\n\n
    • Ki\u1ebfn tr\u00fac DCS:<\/strong> M\u1ed9t trong nh\u1eefng \u01b0u \u0111i\u1ec3m c\u1ee7a h\u1ec7 th\u1ed1ng DCS l\u00e0 kh\u1ea3 n\u0103ng ph\u00e2n t\u00e1n r\u1ee7i ro tr\u00ean c\u00e1c ch\u1ee9c n\u0103ng kh\u00e1c nhau. Logic \u0111i\u1ec1u khi\u1ec3n \u0111\u01b0\u1ee3c ph\u00e2n t\u00e1ch th\u00e0nh c\u00e1c kh\u1ed1i \u0111\u1ed9c l\u1eadp. Do \u0111\u00f3, ngay c\u1ea3 khi m\u1ed9t b\u1ed9 \u0111i\u1ec1u khi\u1ec3n g\u1eb7p s\u1ef1 c\u1ed1, to\u00e0n b\u1ed9 khu v\u1ef1c \u0111\u00f3 v\u1eabn c\u00f3 th\u1ec3 ti\u1ebfp t\u1ee5c ho\u1ea1t \u0111\u1ed9ng b\u00ecnh th\u01b0\u1eddng. C\u00e1ch b\u1ed1 tr\u00ed n\u00e0y l\u00e0 c\u1ea7n thi\u1ebft \u0111\u1ec3 tr\u00e1nh t\u00ecnh tr\u1ea1ng ng\u1eebng ho\u1ea1t \u0111\u1ed9ng ho\u00e0n to\u00e0n t\u1ea1i c\u00e1c nh\u00e0 m\u00e1y ch\u1ebf bi\u1ebfn h\u00f3a ch\u1ea5t ho\u1eb7c nh\u00e0 m\u00e1y \u0111i\u1ec7n, n\u01a1i m\u00e0 vi\u1ec7c \u0111i\u1ec1u khi\u1ec3n quy tr\u00ecnh ti\u00ean ti\u1ebfn v\u00e0 hi\u1ec7u qu\u1ea3 n\u0103ng l\u01b0\u1ee3ng l\u00e0 y\u1ebfu t\u1ed1 then ch\u1ed1t.<\/li>\n<\/ul>\n\n\n\n

      H\u1ec7 sinh th\u00e1i ph\u1ea7n c\u1ee9ng: N\u1ec1n t\u1ea3ng th\u1ea7m l\u1eb7ng c\u1ee7a s\u1ef1 \u1ed5n \u0111\u1ecbnh<\/h2>\n\n\n\n

      R\u1ea5t kh\u00f3 \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh ranh gi\u1edbi gi\u1eefa c\u00e1c h\u1ec7 th\u1ed1ng ph\u1ea7n m\u1ec1m v\u00e0 c\u00e1c h\u1ec7 th\u1ed1ng ph\u1ea7n c\u1ee9ng. \u0110\u1ed1i v\u1edbi c\u00e1c h\u1ec7 th\u1ed1ng DCS v\u00e0 PLC, ch\u1ec9 c\u1ea7n nh\u00ecn v\u00e0o b\u00ean trong t\u1ee7 \u0111i\u1ec1u khi\u1ec3n l\u00e0 c\u00f3 th\u1ec3 th\u1ea5y r\u00f5 s\u1ef1 kh\u00e1c bi\u1ec7t. C\u00e1c h\u1ec7 th\u1ed1ng n\u00e0y kh\u00e1c nhau v\u1ec1 tri\u1ebft l\u00fd m\u00f4-\u0111un h\u00f3a, t\u00edch h\u1ee3p v\u00e0 thi\u1ebft k\u1ebf.<\/p>\n\n\n\n

      C\u1ea5u tr\u00fac ph\u1ea7n c\u1ee9ng c\u1ee7a h\u1ec7 th\u1ed1ng \u0111i\u1ec1u khi\u1ec3n PLC<\/h3>\n\n\n\n

      Thi\u1ebft k\u1ebf c\u1ee7a PLC d\u1ef1a tr\u00ean t\u00ednh m\u00f4-\u0111un \u0111\u1ed9c l\u1eadp. B\u1ea1n s\u1ebd th\u1ea5y c\u00e1c b\u1ed9 ph\u1eadn \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 l\u1eafp gh\u00e9p theo ki\u1ec3u m\u00f4-\u0111un, gi\u00fap t\u1ea1o ra m\u1ed9t c\u1ea5u h\u00ecnh t\u00f9y ch\u1ec9nh. C\u00e1c th\u00e0nh ph\u1ea7n d\u1ef1 ki\u1ebfn bao g\u1ed3m:<\/p>\n\n\n\n

        \n
      • M\u00f4-\u0111un b\u1ed9 x\u1eed l\u00fd (CPU):<\/strong> B\u1ed9 n\u00e3o. \u0110\u00e2y l\u00e0 m\u1ed9t \u0111\u01a1n v\u1ecb ho\u00e0n to\u00e0n \u0111\u1ed9c l\u1eadp, t\u00e1ch bi\u1ec7t v\u1edbi khung m\u00e1y, \u0111\u01b0\u1ee3c ph\u00e2n c\u00f4ng t\u00f9y thu\u1ed9c v\u00e0o logic c\u1ea7n gi\u1ea3i quy\u1ebft v\u00e0 c\u00e1c y\u00eau c\u1ea7u v\u1ec1 giao ti\u1ebfp.<\/li>\n\n\n\n
      • Gi\u00e1 \u0111\u1ee1\/Khung m\u00e1y v\u00e0 B\u1ed9 ngu\u1ed3n:<\/strong> \u0110\u00e2y l\u00e0 v\u1ecf m\u00e1y ch\u1ee9a c\u00e1c m\u00f4-\u0111un v\u00e0 b\u1ed9 ph\u1eadn \u0111i\u1ec1u ph\u1ed1i ngu\u1ed3n \u0111i\u1ec7n \u0111\u1ebfn t\u1eebng m\u00f4-\u0111un.<\/li>\n\n\n\n
      • M\u00f4-\u0111un I\/O (\u0110\u1ea7u v\u00e0o\/\u0110\u1ea7u ra):<\/strong> \u0110\u00e2y l\u00e0 c\u00e1c th\u1ebb giao di\u1ec7n bao g\u1ed3m c\u00e1c c\u1ed5ng \u0110\u1ea7u v\u00e0o\/\u0110\u1ea7u ra K\u1ef9 thu\u1eadt s\u1ed1 (d\u00e0nh cho c\u00f4ng t\u1eafc v\u00e0 c\u1ea3m bi\u1ebfn) v\u00e0 t\u00edn hi\u1ec7u T\u01b0\u01a1ng t\u1ef1 (d\u00e0nh cho b\u1ed9 truy\u1ec1n t\u00edn hi\u1ec7u nhi\u1ec7t \u0111\u1ed9 v\u00e0 \u00e1p su\u1ea5t). Trong c\u00e1c h\u1ec7 th\u1ed1ng PLC, ng\u01b0\u1eddi ta th\u01b0\u1eddng k\u1ebft h\u1ee3p c\u00e1c m\u00f4-\u0111un n\u00e0y \u0111\u1ec3 t\u0103ng kh\u1ea3 n\u0103ng t\u00f9y ch\u1ec9nh.<\/li>\n\n\n\n
      • HMI (Giao di\u1ec7n ng\u01b0\u1eddi-m\u00e1y):<\/strong> Th\u00f4ng th\u01b0\u1eddng, \u0111\u00e2y l\u00e0 m\u1ed9t m\u00e0n h\u00ecnh c\u1ea3m \u1ee9ng ri\u00eang bi\u1ec7t \u0111\u01b0\u1ee3c l\u1eafp tr\u00ean c\u1eeda m\u00e1y. \u0110\u00e2y l\u00e0 m\u1ed9t thi\u1ebft b\u1ecb ph\u1ea7n c\u1ee9ng \u0111\u1ed9c l\u1eadp, c\u1ea7n \u0111\u01b0\u1ee3c k\u1ebft n\u1ed1i v\u00e0 l\u1eadp tr\u00ecnh ri\u00eang bi\u1ec7t v\u1edbi PLC.<\/li>\n\n\n\n
      • Th\u1ebb giao ti\u1ebfp:<\/strong> \u0110\u00e2y l\u00e0 c\u00e1c m\u00f4-\u0111un \u0111\u01b0\u1ee3c t\u00edch h\u1ee3p \u0111\u1ec3 h\u1ed7 tr\u1ee3 c\u00e1c giao th\u1ee9c kh\u00e1c nhau nh\u01b0 Ethernet\/IP, Profibus ho\u1eb7c Modbus nh\u1eb1m giao ti\u1ebfp v\u1edbi c\u00e1c thi\u1ebft b\u1ecb kh\u00e1c.<\/li>\n<\/ul>\n\n\n\n

        C\u1ea5u tr\u00fac ph\u1ea7n c\u1ee9ng c\u1ee7a h\u1ec7 th\u1ed1ng \u0111i\u1ec1u khi\u1ec3n DCS<\/h3>\n\n\n\n

        H\u1ec7 th\u1ed1ng DCS \u0111\u01b0\u1ee3c b\u00e1n d\u01b0\u1edbi d\u1ea1ng m\u1ed9t h\u1ec7 th\u1ed1ng \u0111\u00e3 \u0111\u01b0\u1ee3c t\u00edch h\u1ee3p s\u1eb5n. Ph\u1ea7n c\u1ee9ng c\u1ee7a h\u1ec7 th\u1ed1ng n\u00e0y \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 ho\u1ea1t \u0111\u1ed9ng nh\u01b0 m\u1ed9t m\u1ea1ng l\u01b0\u1edbi thay v\u00ec m\u1ed9t thi\u1ebft b\u1ecb \u0111\u1ed9c l\u1eadp. H\u1ec7 sinh th\u00e1i c\u1ee7a n\u00f3 r\u1ed9ng l\u1edbn v\u00e0 \u0111\u01b0\u1ee3c ti\u00eau chu\u1ea9n h\u00f3a h\u01a1n, th\u01b0\u1eddng bao g\u1ed3m c\u00e1c thi\u1ebft b\u1ecb ph\u1ea7n c\u1ee9ng \u0111\u01b0\u1ee3c t\u1ed1i \u01b0u h\u00f3a cho c\u00e1c kh\u1ed1i ch\u1ee9c n\u0103ng c\u1ee5 th\u1ec3.<\/p>\n\n\n\n

          \n
        • T\u1ee7 \u0111i\u1ec1u khi\u1ec3n:<\/strong> C\u00e1c thi\u1ebft b\u1ecb n\u00e0y ch\u1ee9a c\u00e1c b\u1ed9 \u0111i\u1ec1u khi\u1ec3n DCS \u0111\u1ed9c quy\u1ec1n. Kh\u00e1c v\u1edbi PLC, c\u00e1c b\u1ed9 \u0111i\u1ec1u khi\u1ec3n n\u00e0y \u0111\u01b0\u1ee3c t\u00edch h\u1ee3p s\u1eb5n t\u00ednh n\u0103ng d\u1ef1 ph\u00f2ng: CPU ch\u00ednh v\u00e0 CPU d\u1ef1 ph\u00f2ng ho\u1ea1t \u0111\u1ed9ng \u0111\u1ed3ng b\u1ed9.<\/li>\n\n\n\n
        • Gi\u00e1 \u0111\u1ee1 I\/O ph\u00e2n t\u00e1n:<\/strong> C\u00e1c thi\u1ebft b\u1ecb n\u00e0y \u0111\u01b0\u1ee3c b\u1ed1 tr\u00ed ph\u00e2n t\u00e1n t\u1ea1i hi\u1ec7n tr\u01b0\u1eddng \u0111\u1ec3 h\u1ea1n ch\u1ebf vi\u1ec7c \u0111i d\u00e2y. Ch\u00fang k\u1ebft n\u1ed1i tr\u1edf l\u1ea1i v\u1edbi b\u1ed9 \u0111i\u1ec1u khi\u1ec3n th\u00f4ng qua m\u1ed9t h\u1ec7 th\u1ed1ng bus tr\u01b0\u1eddng c\u00f3 t\u00ednh d\u1ef1 ph\u00f2ng.<\/li>\n\n\n\n
        • Tr\u1ea1m k\u1ef9 thu\u1eadt v\u00e0 tr\u1ea1m v\u1eadn h\u00e0nh:<\/strong> \u0110\u00e2y l\u00e0 nh\u1eefng m\u00e1y t\u00ednh c\u00f4ng nghi\u1ec7p ho\u1eb7c m\u00e1y ch\u1ee7 chuy\u00ean d\u1ee5ng. Trong m\u1ed9t h\u1ec7 th\u1ed1ng \u0111i\u1ec1u khi\u1ec3n ph\u00e2n t\u00e1n (DCS), \u201cm\u00e0n h\u00ecnh\u201d kh\u00f4ng ph\u1ea3i l\u00e0 m\u1ed9t thi\u1ebft b\u1ecb ngo\u1ea1i vi; n\u00f3 l\u00e0 m\u1ed9t th\u00e0nh ph\u1ea7n ph\u1ea7n c\u1ee9ng c\u1ee7a h\u1ec7 th\u1ed1ng v\u00e0 ch\u1ea1y ph\u1ea7n m\u1ec1m \u0111i\u1ec1u khi\u1ec3n t\u00edch h\u1ee3p.<\/li>\n\n\n\n
        • M\u00e1y ch\u1ee7 \u1ee9ng d\u1ee5ng:<\/strong> \u0110\u00e2y l\u00e0 c\u00e1c thi\u1ebft b\u1ecb \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf chuy\u00ean d\u1ee5ng \u0111\u1ec3 \u0111\u00f3ng vai tr\u00f2 l\u00e0 h\u1ec7 th\u1ed1ng l\u01b0u tr\u1eef d\u1eef li\u1ec7u (Historian) v\u00e0 qu\u1ea3n l\u00fd c\u01a1 s\u1edf d\u1eef li\u1ec7u t\u00e0i s\u1ea3n tr\u00ean to\u00e0n nh\u00e0 m\u00e1y.<\/li>\n\n\n\n
        • Bus h\u1ec7 th\u1ed1ng:<\/strong> M\u1ed9t h\u1ec7 th\u1ed1ng truy\u1ec1n th\u00f4ng t\u1ed1c \u0111\u1ed9 cao do ch\u00ednh ch\u00fang t\u00f4i thi\u1ebft k\u1ebf, k\u1ebft n\u1ed1i t\u1ea5t c\u1ea3 c\u00e1c thi\u1ebft b\u1ecb n\u00e0y v\u1edbi nhau, \u0111\u1ea3m b\u1ea3o t\u00ednh tin c\u1eady c\u1ee7a d\u1eef li\u1ec7u tr\u00ean to\u00e0n b\u1ed9 nh\u00e0 m\u00e1y.<\/li>\n<\/ul>\n\n\n\n
          \"\"<\/figure>\n\n\n\n

          Th\u1ef1c tr\u1ea1ng v\u1ec1 th\u1eddi gian ng\u1eebng ho\u1ea1t \u0111\u1ed9ng: Nh\u1eefng l\u00fac h\u1ec7 th\u1ed1ng th\u1ef1c s\u1ef1 g\u1eb7p s\u1ef1 c\u1ed1<\/h3>\n\n\n\n

          Khi xem x\u00e9t c\u00e1c th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt ph\u1ea7n c\u1ee9ng, ng\u01b0\u1eddi ta c\u00f3 th\u1ec3 b\u1ecb thu h\u00fat b\u1edfi b\u1ed9 \u0111i\u1ec1u khi\u1ec3n \u0111\u00f3. \u0110\u00fang l\u00e0 ph\u1ea7n c\u1ee9ng DCS s\u1edf h\u1eefu t\u00ednh n\u0103ng d\u1ef1 ph\u00f2ng t\u00edch h\u1ee3p v\u01b0\u1ee3t tr\u1ed9i, trong \u0111\u00f3 m\u1ed9t b\u1ed9 \u0111i\u1ec1u khi\u1ec3n d\u1ef1 ph\u00f2ng s\u1ebd ngay l\u1eadp t\u1ee9c ti\u1ebfp qu\u1ea3n nhi\u1ec7m v\u1ee5. \u0110\u00f3 th\u1ef1c s\u1ef1 l\u00e0 m\u1ed9t \u0111i\u1ec3m \u0111\u00e1ng ch\u00fa \u00fd.<\/p>\n\n\n\n

          Tuy nhi\u00ean, c\u00e1c b\u1ea3n ghi b\u1ea3o tr\u00ec l\u1ea1i cho th\u1ea5y m\u1ed9t b\u1ee9c tranh kh\u00e1c. B\u1ed9 \u0111i\u1ec1u khi\u1ec3n hi\u1ebfm khi l\u00e0 nguy\u00ean nh\u00e2n g\u00e2y ra s\u1ef1 c\u1ed1 ng\u1eebng ho\u1ea1t \u0111\u1ed9ng c\u1ee7a nh\u00e0 m\u00e1y. \u0110i\u1ec3m y\u1ebfu h\u1ea7u nh\u01b0 lu\u00f4n n\u1eb1m \u1edf \u201cph\u1ea7n r\u00eca\u201d c\u1ee7a h\u1ec7 th\u1ed1ng \u2014 \u0111\u00f3 l\u00e0 v\u00f4 s\u1ed1 thi\u1ebft b\u1ecb hi\u1ec7n tr\u01b0\u1eddng, c\u1ea3m bi\u1ebfn, r\u01a1le v\u00e0 c\u00e1c b\u1ed9 ngu\u1ed3n c\u1ea5p \u0111i\u1ec7n cho ch\u00fang. M\u1ed9t b\u1ed9 \u0111i\u1ec1u khi\u1ec3n d\u1ef1 ph\u00f2ng s\u1ebd kh\u00f4ng c\u1ee9u \u0111\u01b0\u1ee3c h\u1ec7 th\u1ed1ng kh\u1ecfi m\u1ed9t \u0111\u1ea7u n\u1ed1i c\u1ea3m bi\u1ebfn b\u1ecb \u0103n m\u00f2n hay m\u1ed9t ngu\u1ed3n \u0111i\u1ec7n kh\u00f4ng \u1ed5n \u0111\u1ecbnh. S\u1ef1 \u1ed5n \u0111\u1ecbnh c\u1ee7a ki\u1ebfn tr\u00fac t\u1ef1 \u0111\u1ed9ng h\u00f3a kh\u00f4ng \u0111\u01b0\u1ee3c quy\u1ebft \u0111\u1ecbnh b\u1edfi th\u00e0nh ph\u1ea7n \u0111\u1eaft nh\u1ea5t (CPU), m\u00e0 b\u1edfi th\u00e0nh ph\u1ea7n b\u1ec1n b\u1ec9 nh\u1ea5t, v\u00e0 trong h\u1ea7u h\u1ebft c\u00e1c h\u1ec7 th\u1ed1ng, \u0111\u00f3 ch\u00ednh l\u00e0 c\u00e1c thi\u1ebft b\u1ecb tr\u01b0\u1eddng.<\/p>\n\n\n\n

          OMCH: T\u0103ng c\u01b0\u1eddng l\u1ee3i th\u1ebf c\u1ea1nh tranh then ch\u1ed1t<\/h3>\n\n\n\n

          Trong cu\u1ed9c tranh lu\u1eadn \u0111ang di\u1ec5n ra gi\u1eefa DCS v\u00e0 PLC, c\u00f3 m\u1ed9t th\u1ef1c t\u1ebf kh\u00f4ng bao gi\u1edd thay \u0111\u1ed5i: \u0111\u1ed9 tin c\u1eady c\u1ee7a ph\u1ea7n bi\u00ean quy\u1ebft \u0111\u1ecbnh s\u1ef1 \u1ed5n \u0111\u1ecbnh c\u1ee7a ph\u1ea7n l\u00f5i.<\/p>\n\n\n\n

          OMCH kh\u00f4ng s\u1ea3n xu\u1ea5t CPU hay gi\u1ea5y ph\u00e9p ph\u1ea7n m\u1ec1m; ch\u00fang t\u00f4i t\u1ea1o ra n\u1ec1n t\u1ea3ng c\u00f4ng nghi\u1ec7p thi\u1ebft y\u1ebfu l\u00e0m n\u1ec1n t\u1ea3ng cho c\u00e1c th\u00e0nh ph\u1ea7n \u0111\u00f3. Do ph\u1ea7n c\u1ee9ng h\u1ed7 tr\u1ee3 \u0111\u01b0\u1ee3c ti\u00eau chu\u1ea9n h\u00f3a, qu\u00fd kh\u00e1ch c\u00f3 to\u00e0n quy\u1ec1n l\u1ef1a ch\u1ecdn c\u00e1c gi\u1ea3i ph\u00e1p thay th\u1ebf ch\u1ea5t l\u01b0\u1ee3ng cao. OMCH cung c\u1ea5p c\u00e1c linh ki\u1ec7n c\u00f4ng nghi\u1ec7p \u2014 t\u1eeb c\u1ea3m bi\u1ebfn ti\u1ec7m c\u1eadn \u0111\u1ebfn b\u1ed9 ngu\u1ed3n chuy\u1ec3n m\u1ea1ch \u2014 \u0111\u00e1p \u1ee9ng ho\u1eb7c v\u01b0\u1ee3t tr\u1ed9i so v\u1edbi c\u00e1c th\u00f4ng s\u1ed1 k\u1ef9 thu\u1eadt c\u1ee7a c\u00e1c th\u01b0\u01a1ng hi\u1ec7u l\u1edbn m\u00e0 kh\u00f4ng k\u00e8m theo m\u1ee9c gi\u00e1 cao ng\u1ea5t ng\u01b0\u1edfng. B\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng c\u00e1c linh ki\u1ec7n ti\u00eau chu\u1ea9n ch\u1ea5t l\u01b0\u1ee3ng cao cho ki\u1ebfn tr\u00fac ngo\u1ea1i vi c\u1ee7a h\u1ec7 th\u1ed1ng (d\u00f9 l\u00e0 PLC hay DCS), qu\u00fd kh\u00e1ch c\u00f3 th\u1ec3 gi\u1ea3m \u0111\u00e1ng k\u1ec3 chi ph\u00ed b\u1ea3o tr\u00ec d\u00e0i h\u1ea1n v\u00e0 \u0111\u1ea3m b\u1ea3o lu\u00f4n c\u00f3 s\u1eb5n linh ki\u1ec7n thay th\u1ebf khi c\u1ea7n thi\u1ebft.<\/p>\n\n\n\n

          L\u1eadp tr\u00ecnh & K\u1ef9 thu\u1eadt: L\u1eadp tr\u00ecnh logic so v\u1edbi c\u1ea5u h\u00ecnh<\/h2>\n\n\n\n

          Chi ph\u00ed c\u1ee7a m\u1ed9t h\u1ec7 th\u1ed1ng kh\u00f4ng ch\u1ec9 gi\u1edbi h\u1ea1n \u1edf ph\u1ea7n c\u1ee9ng. C\u1ea7n ph\u1ea3i \u0111\u1ea7u t\u01b0 h\u00e0ng ngh\u00ecn gi\u1edd s\u00e1ng t\u1ea1o c\u1ee7a con ng\u01b0\u1eddi \u0111\u1ec3 h\u1ec7 th\u1ed1ng c\u00f3 th\u1ec3 ho\u1ea1t \u0111\u1ed9ng. Ph\u01b0\u01a1ng ph\u00e1p k\u1ef9 thu\u1eadt d\u00e0nh cho PLC v\u00e0 DCS \u0111\u00e3 \u0111\u01b0\u1ee3c h\u00ecnh th\u00e0nh t\u1eeb c\u01a1 b\u1ea3n.<\/p>\n\n\n\n

            \n
          • L\u1eadp tr\u00ecnh PLC<\/strong><\/li>\n<\/ul>\n\n\n\n

            H\u00e3y b\u1eaft \u0111\u1ea7u v\u1edbi l\u1eadp tr\u00ecnh PLC, l\u0129nh v\u1ef1c m\u00e0 c\u00f4ng vi\u1ec7c k\u1ef9 thu\u1eadt PLC ch\u1ee7 y\u1ebfu xoay quanh Ladder Logic v\u00e0 c\u00e1c ng\u00f4n ng\u1eef l\u1eadp tr\u00ecnh kh\u00e1c theo ti\u00eau chu\u1ea9n IEC 61131-3. \u0110i\u1ec1u n\u00e0y mang l\u1ea1i s\u1ef1 linh ho\u1ea1t t\u1ed1i \u0111a cho c\u00e1c k\u1ef9 s\u01b0 v\u00ec h\u1ecd c\u00f3 th\u1ec3 l\u1eadp tr\u00ecnh b\u1ed9 \u0111i\u1ec1u khi\u1ec3n \u0111\u1ec3 th\u1ef1c hi\u1ec7n g\u1ea7n nh\u01b0 m\u1ecdi t\u00e1c v\u1ee5. H\u1ec7 th\u1ed1ng n\u00e0y r\u1ea5t d\u1ec5 t\u00f9y ch\u1ec9nh.<\/p>\n\n\n\n

            Tuy nhi\u00ean, vi\u1ec7c b\u1eaft \u0111\u1ea7u t\u1eeb con s\u1ed1 kh\u00f4ng n\u00e0y c\u0169ng c\u00f3 m\u1eb7t tr\u00e1i. Ch\u1eb3ng h\u1ea1n, gi\u1ea3 s\u1eed b\u1ea1n c\u1ea7n \u0111i\u1ec1u khi\u1ec3n m\u1ed9t van. \u0110i\u1ec1u \u0111\u00f3 c\u00f3 ngh\u0129a l\u00e0 b\u1ea1n ph\u1ea3i l\u1eadp tr\u00ecnh logic cho van, t\u1ea1o c\u00e1c th\u1ebb b\u1ed9 nh\u1edb, thi\u1ebft k\u1ebf \u0111\u1ed3 h\u1ecda m\u00e0n h\u00ecnh HMI v\u00e0 k\u1ebft n\u1ed1i th\u1ee7 c\u00f4ng t\u1ea5t c\u1ea3 c\u00e1c th\u00e0nh ph\u1ea7n n\u00e0y l\u1ea1i v\u1edbi nhau. \u0110\u00f3 l\u00e0 m\u1ed9t kh\u1ed1i l\u01b0\u1ee3ng c\u00f4ng vi\u1ec7c k\u1ef9 thu\u1eadt r\u1ea5t l\u1edbn. \u0110\u1ed1i v\u1edbi c\u00e1c ch\u1ee9c n\u0103ng ph\u1ee9c t\u1ea1p, \u0111i\u1ec1u n\u00e0y c\u00f3 ngh\u0129a l\u00e0 ph\u1ea3i x\u00e2y d\u1ef1ng to\u00e0n b\u1ed9 h\u1ec7 th\u1ed1ng t\u1eeb \u0111\u1ea7u, qu\u00e1 tr\u00ecnh n\u00e0y c\u00f3 th\u1ec3 m\u1ea5t r\u1ea5t nhi\u1ec1u th\u1eddi gian. \u0110\u00e2y c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c coi l\u00e0 ph\u01b0\u01a1ng ph\u00e1p c\u1ee7a nh\u1eefng ng\u01b0\u1eddi th\u1ee3 th\u1ee7 c\u00f4ng th\u1ef1c th\u1ee5: \u0111\u01b0\u1ee3c x\u00e2y d\u1ef1ng \u0111\u1ec3 ch\u1ecbu \u0111\u1ef1ng th\u1eed th\u00e1ch c\u1ee7a th\u1eddi gian, h\u01b0\u1edbng \u0111\u1ebfn kh\u1ea3 n\u0103ng t\u00f9y ch\u1ec9nh cao, nh\u01b0ng \u0111\u00f2i h\u1ecfi r\u1ea5t nhi\u1ec1u c\u00f4ng s\u1ee9c.<\/p>\n\n\n\n

              \n
            • C\u1ea5u h\u00ecnh DCS<\/strong><\/li>\n<\/ul>\n\n\n\n

              C\u00f4ng vi\u1ec7c k\u1ef9 thu\u1eadt \u0111\u1ed1i v\u1edbi m\u1ed9t h\u1ec7 th\u1ed1ng ch\u1ee7 y\u1ebfu t\u1eadp trung v\u00e0o c\u1ea5u h\u00ecnh h\u1ec7 th\u1ed1ng; \u0111\u1ed1i v\u1edbi h\u1ec7 th\u1ed1ng \u0111i\u1ec1u khi\u1ec3n ph\u00e2n t\u00e1n (DCS), \u0111i\u1ec1u n\u00e0y c\u00f3 ngh\u0129a l\u00e0 h\u1ea7u nh\u01b0 kh\u00f4ng c\u1ea7n ho\u1eb7c ch\u1ec9 c\u1ea7n r\u1ea5t \u00edt c\u00f4ng vi\u1ec7c l\u1eadp tr\u00ecnh. Thay v\u00e0o \u0111\u00f3, c\u00f3 s\u1eb5n c\u00e1c th\u01b0 vi\u1ec7n \u0111\u1ea7y \u0111\u1ee7 c\u00e1c c\u00f4ng c\u1ee5 l\u1eadp tr\u00ecnh kh\u1ed1i ch\u1ee9c n\u0103ng \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf ri\u00eang \u0111\u1ec3 t\u1ea1o Bi\u1ec3u \u0111\u1ed3 Ch\u1ee9c n\u0103ng Li\u00ean t\u1ee5c (CFC) v\u00e0 s\u01a1 \u0111\u1ed3 kh\u1ed1i ch\u1ee9c n\u0103ng.<\/p>\n\n\n\n

              Trong DCS, b\u1ea1n kh\u00f4ng c\u1ea7n ph\u1ea3i l\u1eadp tr\u00ecnh van. B\u1ea1n ch\u1ec9 c\u1ea7n k\u00e9o m\u1ed9t \u0111\u1ed1i t\u01b0\u1ee3ng Van t\u1eeb th\u01b0 vi\u1ec7n v\u00e0 th\u1ea3 n\u00f3 v\u00e0o v\u1ecb tr\u00ed c\u1ea7n thi\u1ebft. \u0110\u00e2y l\u00e0 m\u1ed9t g\u00f3i ph\u1ea7n m\u1ec1m \u0111\u00e3 \u0111\u01b0\u1ee3c l\u1eafp r\u00e1p s\u1eb5n, ch\u1ee9a \u0111\u1ea7y \u0111\u1ee7 m\u1ecdi th\u1ee9 b\u1ea1n c\u1ea7n, bao g\u1ed3m logic \u0111i\u1ec1u khi\u1ec3n, giao di\u1ec7n m\u00e0n h\u00ecnh ng\u01b0\u1eddi v\u1eadn h\u00e0nh, th\u00f4ng s\u1ed1 b\u00e1o \u0111\u1ed9ng, ghi nh\u1eadt k\u00fd d\u1eef li\u1ec7u v\u00e0 nhi\u1ec1u t\u00ednh n\u0103ng kh\u00e1c. \u0110i\u1ec1u n\u00e0y gi\u00fap ti\u1ebft ki\u1ec7m r\u1ea5t nhi\u1ec1u c\u00f4ng s\u1ee9c thi\u1ebft k\u1ebf. B\u1ea1n kh\u00f4ng c\u1ea7n ph\u1ea3i x\u00e2y d\u1ef1ng to\u00e0n b\u1ed9 c\u1ea5u tr\u00fac t\u1eeb \u0111\u1ea7u, m\u00e0 ch\u1ec9 c\u1ea7n l\u1eafp r\u00e1p n\u00f3 l\u1ea1i m\u00e0 th\u00f4i.<\/p>\n\n\n\n

              S\u1ef1 kh\u00e1c bi\u1ec7t n\u00e0y<\/strong> \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn ti\u1ebfn \u0111\u1ed9 c\u1ee7a d\u1ef1 \u00e1n. Trong tr\u01b0\u1eddng h\u1ee3p c\u00e1c h\u1ec7 th\u1ed1ng nh\u1ecf h\u01a1n ho\u1eb7c c\u00e1c m\u00e1y \u0111\u01a1n l\u1ebb, c\u00f3 th\u1ec3 tr\u00e1nh \u0111\u01b0\u1ee3c th\u1eddi gian v\u00e0 chi ph\u00ed ph\u00e1t sinh c\u1ea7n thi\u1ebft \u0111\u1ec3 thi\u1ebft l\u1eadp m\u1ed9t h\u1ec7 th\u1ed1ng \u0111i\u1ec1u khi\u1ec3n ph\u00e2n t\u00e1n (DCS). \u0110\u1ed1i v\u1edbi c\u00e1c t\u00e1c v\u1ee5 nh\u1ecf, ch\u1ec9 th\u1ef1c hi\u1ec7n m\u1ed9t l\u1ea7n, vi\u1ec7c ph\u00e1t tri\u1ec3n v\u00e0 tri\u1ec3n khai b\u1ed9 \u0111i\u1ec1u khi\u1ec3n logic l\u1eadp tr\u00ecnh (PLC) s\u1ebd nhanh ch\u00f3ng h\u01a1n nhi\u1ec1u. T\u1ea5t nhi\u00ean, h\u1ec7 th\u1ed1ng c\u00e0ng l\u1edbn th\u00ec t\u00ecnh h\u00ecnh c\u00e0ng ph\u1ee9c t\u1ea1p. Trong tr\u01b0\u1eddng h\u1ee3p m\u1ed9t d\u1ef1 \u00e1n bao g\u1ed3m 5.000 \u0111i\u1ec3m I\/O v\u00e0 h\u00e0ng ch\u1ee5c v\u00f2ng \u0111i\u1ec1u khi\u1ec3n, ph\u01b0\u01a1ng ph\u00e1p \u201ct\u1ef1 x\u00e2y d\u1ef1ng\u201d d\u1ef1a tr\u00ean PLC s\u1ebd tr\u1edf n\u00ean r\u1ea5t t\u1ed1n k\u00e9m v\u00e0 d\u1ec5 x\u1ea3y ra sai s\u00f3t. \u0110\u00fang v\u1eady. \u0110\u1ed1i v\u1edbi c\u00e1c d\u1ef1 \u00e1n quy m\u00f4 l\u1edbn, m\u00f4 h\u00ecnh c\u1ea5u h\u00ecnh DCS c\u00f3 th\u1ec3 gi\u00fap ti\u1ebft ki\u1ec7m h\u00e0ng ngh\u00ecn gi\u1edd k\u1ef9 thu\u1eadt, \u0111\u1ed3ng th\u1eddi duy tr\u00ec c\u00f9ng m\u1ee9c ch\u1ea5t l\u01b0\u1ee3ng v\u00e0 \u0111\u1ea9y nhanh \u0111\u00e1ng k\u1ec3 qu\u00e1 tr\u00ecnh \u0111\u01b0a nh\u00e0 m\u00e1y v\u00e0o ho\u1ea1t \u0111\u1ed9ng.<\/p>\n\n\n\n

              Kh\u00eda c\u1ea1nh k\u1ef9 thu\u1eadt<\/td>Ph\u01b0\u01a1ng ph\u00e1p PLC (L\u1eadp tr\u00ecnh logic)<\/td>Ph\u01b0\u01a1ng ph\u00e1p DCS (C\u1ea5u h\u00ecnh)<\/td><\/tr>
              Ph\u01b0\u01a1ng ph\u00e1p lu\u1eadn<\/td>\u201cVi\u1ebft t\u1eeb \u0111\u1ea7u\u201d (Ladder Logic)<\/td>\u201cK\u00e9o v\u00e0 th\u1ea3\u201d (C\u00e1c kh\u1ed1i ch\u1ee9c n\u0103ng)<\/td><\/tr>
              T\u00ednh linh ho\u1ea1t<\/td>C\u1ef1c \u0111\u1ec9nh (C\u00f3 th\u1ec3 l\u00e0m m\u1ecdi th\u1ee9)<\/td>\u0110\u01b0\u1ee3c \u0111\u1ecbnh ngh\u0129a (C\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng \u0111\u01b0\u1ee3c chu\u1ea9n h\u00f3a)<\/td><\/tr>
              T\u1ed1c \u0111\u1ed9 c\u00e0i \u0111\u1eb7t<\/td>T\u1ed1c \u0111\u1ed9 cao d\u00e0nh cho c\u00e1c m\u00e1y \u0111\u01a1n l\u1ebb (1\u201350 I\/O)<\/td>T\u1ed1c \u0111\u1ed9 cao cho c\u00e1c h\u1ec7 th\u1ed1ng quy m\u00f4 l\u1edbn (h\u01a1n 1.000 I\/O)<\/td><\/tr>
              T\u00edch h\u1ee3p HMI<\/td>H\u01b0\u1edbng d\u1eabn (T\u1ea1o th\u1ebb v\u00e0 li\u00ean k\u1ebft h\u00ecnh \u1ea3nh)<\/td>B\u1ea3n \u0111\u1ecba (\u0110\u1ed3 h\u1ecda \u0111\u01b0\u1ee3c li\u00ean k\u1ebft s\u1eb5n v\u1edbi logic)<\/td><\/tr>
              Ph\u00f9 h\u1ee3p nh\u1ea5t cho<\/td>C\u00e1c thao t\u00e1c v\u1eadn h\u00e0nh m\u00e1y \u0111\u1ed9c \u0111\u00e1o, \u0111\u01b0\u1ee3c t\u00f9y ch\u1ec9nh<\/td>C\u00e1c quy tr\u00ecnh \u0111\u01b0\u1ee3c ti\u00eau chu\u1ea9n h\u00f3a v\u00e0 c\u00f3 th\u1ec3 l\u1eb7p l\u1ea1i<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

              Ph\u00e2n t\u00edch TCO: B\u1ea3o tr\u00ec, \u0111\u1ed9 tin c\u1eady v\u00e0 chi ph\u00ed<\/h2>\n\n\n\n

              B\u00e1o gi\u00e1 m\u00e0 qu\u00fd v\u1ecb nh\u1eadn \u0111\u01b0\u1ee3c ch\u01b0a bao gi\u1edd ph\u1ea3n \u00e1nh ch\u00ednh x\u00e1c chi ph\u00ed th\u1ef1c t\u1ebf. Ph\u00e2n t\u00edch T\u1ed5ng chi ph\u00ed s\u1edf h\u1eefu (TCO) s\u1ebd n\u00eau r\u00f5 c\u00e1c chi ph\u00ed ph\u00e1t sinh t\u1eeb l\u1ef1a ch\u1ecdn c\u1ee7a qu\u00fd v\u1ecb trong su\u1ed1t v\u00f2ng \u0111\u1eddi 20 n\u0103m c\u1ee7a nh\u00e0 m\u00e1y.<\/p>\n\n\n\n

                \n
              • \u0110\u1ea7u t\u01b0 ban \u0111\u1ea7u (CapEx) so v\u1edbi gi\u00e1 tr\u1ecb d\u00e0i h\u1ea1n<\/strong><\/li>\n<\/ul>\n\n\n\n

                Khi xem x\u00e9t chi ph\u00ed li\u00ean quan \u0111\u1ebfn ph\u1ea7n c\u1ee9ng ngay t\u1eeb giai \u0111o\u1ea1n \u0111\u1ea7u c\u1ee7a d\u1ef1 \u00e1n, PLC lu\u00f4n l\u00e0 l\u1ef1a ch\u1ecdn \u01b0u vi\u1ec7t nh\u1edd chi ph\u00ed ban \u0111\u1ea7u th\u1ea5p h\u01a1n. B\u1ea1n c\u00f3 th\u1ec3 mua m\u1ed9t b\u1ed9 PLC c\u00f9ng c\u00e1c th\u1ebb I\/O t\u01b0\u01a1ng \u1ee9ng v\u1edbi m\u1ee9c \u0111\u1ea7u t\u01b0 ban \u0111\u1ea7u th\u1ea5p h\u01a1n so v\u1edbi chi ph\u00ed ph\u1ea3i tr\u1ea3 cho m\u1ed9t n\u00fat DCS. Ph\u1ea7n c\u1ee9ng DCS, gi\u1ea5y ph\u00e9p ph\u1ea7n m\u1ec1m h\u1ec7 th\u1ed1ng v\u00e0 c\u00e1c g\u00f3i quy\u1ec1n s\u1eed d\u1ee5ng k\u1ef9 thu\u1eadt \u0111\u1ec1u c\u00f3 gi\u00e1 cao h\u01a1n \u0111\u00e1ng k\u1ec3.<\/p>\n\n\n\n

                Tuy nhi\u00ean, c\u00e1c t\u00ednh to\u00e1n t\u00e0i ch\u00ednh l\u1ea1i c\u00f3 h\u01b0\u1edbng \u0111i kh\u00e1c khi x\u00e9t \u0111\u1ebfn c\u00e1c d\u1ef1 \u00e1n quy m\u00f4 l\u1edbn h\u01a1n. \u0110\u1ed1i v\u1edbi ph\u1ea7n c\u1ee9ng DCS, m\u1eb7c d\u00f9 chi ph\u00ed ban \u0111\u1ea7u kh\u00e1 cao, nh\u01b0ng kho\u1ea3n ti\u1ebft ki\u1ec7m t\u1eeb vi\u1ec7c t\u00edch h\u1ee3p l\u1ea1i r\u1ea5t l\u1edbn. Nh\u01b0 \u0111\u00e3 \u0111\u1ec1 c\u1eadp tr\u01b0\u1edbc \u0111\u00f3, h\u1ec7 th\u1ed1ng DCS gi\u00fap ti\u1ebft ki\u1ec7m h\u00e0ng ngh\u00ecn gi\u1edd lao \u0111\u1ed9ng nh\u1edd c\u00e1c th\u01b0 vi\u1ec7n \u0111\u01b0\u1ee3c c\u1ea5u h\u00ecnh s\u1eb5n v\u00e0 c\u01a1 s\u1edf d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c t\u00edch h\u1ee3p. N\u1ebfu tri\u1ec3n khai gi\u1ea3i ph\u00e1p SCADA+PLC v\u00e0 sao ch\u00e9p c\u00e1c ch\u1ee9c n\u0103ng c\u1ee7a DCS (nh\u01b0 c\u1ea3nh b\u00e1o, ph\u00e2n t\u00edch xu h\u01b0\u1edbng, b\u1ea3o m\u1eadt ng\u01b0\u1eddi d\u00f9ng v\u00e0 giao di\u1ec7n ng\u01b0\u1eddi d\u00f9ng), chi ph\u00ed k\u1ef9 thu\u1eadt c\u00f3 th\u1ec3 s\u1ebd cao h\u01a1n so v\u1edbi kho\u1ea3n ti\u1ebft ki\u1ec7m thu \u0111\u01b0\u1ee3c t\u1eeb ph\u1ea7n c\u1ee9ng.<\/p>\n\n\n\n

                  \n
                • T\u00ecnh tr\u1ea1ng s\u1eb5n c\u00f3 c\u1ee7a ph\u1ee5 t\u00f9ng thay th\u1ebf v\u00e0 chi\u1ebfn l\u01b0\u1ee3c b\u1ea3o tr\u00ec<\/strong><\/li>\n<\/ul>\n\n\n\n

                  Gi\u1edd \u0111\u00e2y, k\u1ebf ho\u1ea1ch v\u1eadn h\u00e0nh nh\u00e0 m\u00e1y trong d\u00e0i h\u1ea1n \u0111ang tr\u1edf th\u00e0nh tr\u1ecdng t\u00e2m. Hi\u1ec7u qu\u1ea3 n\u0103ng l\u01b0\u1ee3ng v\u00e0 th\u1eddi gian trung b\u00ecnh gi\u1eefa c\u00e1c l\u1ea7n h\u1ecfng h\u00f3c tr\u1edf th\u00e0nh c\u00e1c ch\u1ec9 s\u1ed1 then ch\u1ed1t.<\/p>\n\n\n\n

                  C\u00e1c linh ki\u1ec7n thay th\u1ebf cho thi\u1ebft b\u1ecb DCS th\u01b0\u1eddng l\u00e0 \u0111\u1ed9c quy\u1ec1n. B\u1ea1n bu\u1ed9c ph\u1ea3i mua ch\u00fang t\u1eeb nh\u00e0 cung c\u1ea5p ban \u0111\u1ea7u, nh\u1eefng ng\u01b0\u1eddi th\u01b0\u1eddng \u00e1p d\u1ee5ng m\u1ee9c gi\u00e1 cao v\u00e0 c\u00f3 xu h\u01b0\u1edbng k\u00e9o d\u00e0i th\u1eddi gian giao h\u00e0ng. V\u1ec1 c\u01a1 b\u1ea3n, b\u1ea1n s\u1ebd ph\u1ea3i \u201cph\u1ee5 thu\u1ed9c\u201d v\u00e0o nh\u00e0 cung c\u1ea5p \u0111\u00f3 trong su\u1ed1t v\u00f2ng \u0111\u1eddi c\u1ee7a h\u1ec7 th\u1ed1ng.<\/p>\n\n\n\n

                  M\u1eb7c d\u00f9 c\u00e1c h\u1ec7 th\u1ed1ng PLC c\u0169ng s\u1eed d\u1ee5ng b\u1ed9 vi x\u1eed l\u00fd \u0111\u1ed9c quy\u1ec1n, nh\u01b0ng ch\u00fang ch\u1ee7 y\u1ebfu d\u1ef1a v\u00e0o m\u1ed9t h\u1ec7 sinh th\u00e1i m\u00f4-\u0111un r\u1ed9ng l\u1edbn g\u1ed3m c\u00e1c linh ki\u1ec7n ti\u00eau chu\u1ea9n c\u00f4ng nghi\u1ec7p. B\u1ea1n kh\u00f4ng b\u1ecb r\u00e0ng bu\u1ed9c v\u00e0o m\u1ed9t ngu\u1ed3n cung c\u1ea5p duy nh\u1ea5t, do \u0111\u00f3 c\u00e1c r\u01a1-le, kh\u1ed1i \u0111\u1ea7u cu\u1ed1i, n\u00fat nh\u1ea5n v\u00e0 b\u1ed9 ngu\u1ed3n kh\u00f4ng nh\u1ea5t thi\u1ebft ph\u1ea3i \u0111\u1ebfn t\u1eeb c\u00f9ng m\u1ed9t nh\u00e0 cung c\u1ea5p.<\/p>\n\n\n\n

                  C\u00e1c ch\u1ee9c n\u0103ng trong t\u1ef1 \u0111\u1ed9ng h\u00f3a c\u00f4ng nghi\u1ec7p<\/h2>\n\n\n\n

                  Khi so s\u00e1nh ch\u1ee9c n\u0103ng gi\u1eefa h\u1ec7 th\u1ed1ng \u0111i\u1ec1u khi\u1ec3n ph\u00e2n t\u00e1n (DCS) v\u00e0 b\u1ed9 \u0111i\u1ec1u khi\u1ec3n logic l\u1eadp tr\u00ecnh (PLC), vi\u1ec7c l\u1ef1a ch\u1ecdn hi\u1ebfm khi ch\u1ec9 \u0111\u01a1n thu\u1ea7n l\u00e0 v\u1ea5n \u0111\u1ec1 s\u1edf th\u00edch. Th\u00f4ng th\u01b0\u1eddng, ch\u00ednh thi\u1ebft k\u1ebf c\u0169ng nh\u01b0 c\u00e1c \u0111\u1eb7c t\u00ednh v\u1eadt l\u00fd c\u1ee7a s\u1ea3n ph\u1ea9m m\u00e0 b\u1ea1n \u0111ang s\u1ea3n xu\u1ea5t m\u1edbi l\u00e0 y\u1ebfu t\u1ed1 quy\u1ebft \u0111\u1ecbnh k\u1ebft qu\u1ea3.<\/p>\n\n\n\n

                  Vai tr\u00f2 c\u1ee7a PLC trong c\u00e1c quy tr\u00ecnh s\u1ea3n xu\u1ea5t r\u1eddi r\u1ea1c<\/h3>\n\n\n\n

                  Trong c\u00e1c h\u1ec7 th\u1ed1ng t\u1ef1 \u0111\u1ed9ng h\u00f3a, PLC \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng r\u1ed9ng r\u00e3i trong c\u00e1c l\u0129nh v\u1ef1c kinh t\u1ebf m\u00e0 s\u1ea3n ph\u1ea9m \u0111\u1ea7u ra l\u00e0 c\u00e1c s\u1ea3n ph\u1ea9m \u0111\u01a1n l\u1ebb (v\u00ed d\u1ee5: \u00f4 t\u00f4, \u0111i\u1ec7n tho\u1ea1i di \u0111\u1ed9ng, chai, h\u1ed9p).<\/p>\n\n\n\n

                  M\u1ea1ch logic t\u1ed1c \u0111\u1ed9 cao: <\/strong>Trong c\u00e1c h\u1ec7 th\u1ed1ng n\u00e0y, th\u1eddi gian l\u00e0 y\u1ebfu t\u1ed1 then ch\u1ed1t v\u00ec m\u00e1y \u0111\u00f3ng g\u00f3i h\u00e0n k\u00edn trung b\u00ecnh 500 h\u1ed9p m\u1ed7i ph\u00fat v\u00e0 \u0111\u00f2i h\u1ecfi \u0111\u1ed9 ch\u00ednh x\u00e1c \u0111\u1ebfn t\u1eebng mili gi\u00e2y. Ch\u1ec9 c\u1ea7n h\u1ec7 th\u1ed1ng logic ch\u1eadm l\u1ea1i d\u00f9 ch\u1ec9 m\u1ed9t ch\u00fat, m\u00e1y s\u1ebd b\u1ecb k\u1eb9t.<\/p>\n\n\n\n

                  T\u1eadp trung v\u00e0o t\u00edn hi\u1ec7u s\u1ed1:<\/strong> C\u00e1c h\u1ec7 th\u1ed1ng n\u00e0y ho\u1ea1t \u0111\u1ed9ng d\u1ef1a tr\u00ean c\u00e1c t\u00edn hi\u1ec7u nh\u1ecb ph\u00e2n (B\u1eadt\/T\u1eaft). Th\u01b0\u1eddng c\u00f3 h\u00e0ng ngh\u00ecn c\u1ea3m bi\u1ebfn d\u00f9ng \u0111\u1ec3 ph\u00e1t hi\u1ec7n s\u1ef1 hi\u1ec7n di\u1ec7n ho\u1eb7c v\u1eafng m\u1eb7t c\u1ee7a m\u1ed9t b\u1ed9 ph\u1eadn trong m\u1ed9t khu v\u1ef1c nh\u1ea5t \u0111\u1ecbnh. B\u1ed9 \u0111i\u1ec1u khi\u1ec3n logic kh\u1ea3 tr\u00ecnh (PLC) \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf \u0111\u1ec3 qu\u1ea3n l\u00fd c\u00e1c t\u00e1c v\u1ee5 \u0111i\u1ec1u khi\u1ec3n r\u1eddi r\u1ea1c nh\u01b0 v\u1eady.<\/p>\n\n\n\n

                  M\u00f4i tr\u01b0\u1eddng l\u00fd t\u01b0\u1edfng:<\/strong> L\u1eafp r\u00e1p \u00f4 t\u00f4, \u0110\u00f3ng chai v\u00e0 \u0111\u00f3ng g\u00f3i, S\u1ea3n xu\u1ea5t thi\u1ebft b\u1ecb \u0111i\u1ec7n t\u1eed, S\u1ea3n xu\u1ea5t m\u00e1y m\u00f3c OEM.<\/p>\n\n\n\n

                  \"\"<\/figure>\n\n\n\n

                  Vai tr\u00f2 c\u1ee7a h\u1ec7 th\u1ed1ng \u0111i\u1ec1u khi\u1ec3n ph\u00e2n t\u00e1n (DCS) trong c\u00e1c ng\u00e0nh c\u00f4ng nghi\u1ec7p quy tr\u00ecnh li\u00ean t\u1ee5c<\/h3>\n\n\n\n

                  C\u00e1c h\u1ec7 th\u1ed1ng \u0111i\u1ec1u khi\u1ec3n DCS chi\u1ebfm \u01b0u th\u1ebf trong c\u00e1c l\u0129nh v\u1ef1c m\u00e0 s\u1ea3n ph\u1ea9m \u0111\u1ea7u ra l\u00e0 h\u00e0ng h\u00f3a (d\u1ea7u m\u1ecf, kh\u00ed \u0111\u1ed1t, n\u01b0\u1edbc ho\u1eb7c d\u01b0\u1ee3c ph\u1ea9m) \u0111\u01b0\u1ee3c v\u1eadn chuy\u1ec3n li\u00ean t\u1ee5c, ch\u1eb3ng h\u1ea1n nh\u01b0 c\u00e1c quy tr\u00ecnh li\u00ean t\u1ee5c.<\/p>\n\n\n\n

                  Quy \u0111\u1ecbnh ph\u1ee9c t\u1ea1p: <\/strong>\u1ede \u0111\u00e2y, th\u00e1ch th\u1ee9c kh\u00f4ng ph\u1ea3i l\u00e0 t\u1ed1c \u0111\u1ed9, m\u00e0 l\u00e0 s\u1ef1 \u1ed5n \u0111\u1ecbnh. H\u1ec7 th\u1ed1ng ph\u1ea3i \u0111i\u1ec1u khi\u1ec3n c\u00e1c v\u00f2ng l\u1eb7p PID (T\u1ef7 l\u1ec7 \u2013 T\u00edch ph\u00e2n \u2013 Vi ph\u00e2n) ph\u1ee9c t\u1ea1p \u0111\u1ec3 c\u00e2n b\u1eb1ng nhi\u1ec7t \u0111\u1ed9, \u00e1p su\u1ea5t v\u00e0 l\u01b0u l\u01b0\u1ee3ng. C\u00e1c bi\u1ebfn s\u1ed1 n\u00e0y t\u01b0\u01a1ng t\u00e1c l\u1eabn nhau; vi\u1ec7c thay \u0111\u1ed5i \u00e1p su\u1ea5t s\u1ebd \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn nhi\u1ec7t \u0111\u1ed9. H\u1ec7 th\u1ed1ng \u0111i\u1ec1u khi\u1ec3n ph\u00e2n t\u00e1n (DCS) r\u1ea5t hi\u1ec7u qu\u1ea3 trong vi\u1ec7c qu\u1ea3n l\u00fd c\u00e1c m\u1ed1i quan h\u1ec7 \u0111a bi\u1ebfn n\u00e0y.<\/p>\n\n\n\n

                  Qu\u1ea3n l\u00fd l\u00f4 v\u00e0 c\u00f4ng th\u1ee9c: <\/strong>Trong c\u00e1c ng\u00e0nh c\u00f4ng nghi\u1ec7p nh\u01b0 d\u01b0\u1ee3c ph\u1ea9m hay ch\u1ebf bi\u1ebfn th\u1ef1c ph\u1ea9m, t\u00ednh nh\u1ea5t qu\u00e1n l\u00e0 y\u00eau c\u1ea7u b\u1eaft bu\u1ed9c. H\u1ec7 th\u1ed1ng \u0111i\u1ec1u khi\u1ec3n ph\u00e2n t\u00e1n (DCS) c\u00f3 kh\u1ea3 n\u0103ng h\u1ed7 tr\u1ee3 s\u1eb5n c\u00f3 v\u00e0 t\u00edch h\u1ee3p s\u1eb5n cho vi\u1ec7c qu\u1ea3n l\u00fd l\u00f4 s\u1ea3n ph\u1ea9m (ti\u00eau chu\u1ea9n ISA-88). H\u1ec7 th\u1ed1ng n\u00e0y qu\u1ea3n l\u00fd c\u00e1c c\u00f4ng th\u1ee9c ph\u1ee9c t\u1ea1p, \u0111\u1ea3m b\u1ea3o r\u1eb1ng m\u1ed7i l\u00f4 thu\u1ed1c ho\u1eb7c \u0111\u1ed3 u\u1ed1ng \u0111\u1ec1u c\u00f3 th\u00e0nh ph\u1ea7n h\u00f3a h\u1ecdc gi\u1ed1ng h\u1ec7t v\u1edbi l\u00f4 tr\u01b0\u1edbc \u0111\u00f3.<\/p>\n\n\n\n

                  M\u00f4i tr\u01b0\u1eddng l\u00fd t\u01b0\u1edfng:<\/strong> C\u00e1c nh\u00e0 m\u00e1y h\u00f3a ch\u1ea5t, nh\u00e0 m\u00e1y l\u1ecdc d\u1ea7u, nh\u00e0 m\u00e1y h\u00f3a d\u1ea7u, x\u1eed l\u00fd n\u01b0\u1edbc, s\u1ea3n xu\u1ea5t d\u01b0\u1ee3c ph\u1ea9m, s\u1ea3n xu\u1ea5t \u0111i\u1ec7n v\u00e0 c\u00e1c m\u00f4i tr\u01b0\u1eddng quy tr\u00ecnh li\u00ean t\u1ee5c, trong \u0111\u00f3 m\u1ed9t khu v\u1ef1c quy tr\u00ecnh c\u1ee5 th\u1ec3 c\u1ea7n \u0111\u01b0\u1ee3c gi\u00e1m s\u00e1t li\u00ean t\u1ee5c.<\/p>\n\n\n\n

                  S\u1ef1 h\u1ed9i t\u1ee5 hi\u1ec7n \u0111\u1ea1i: H\u1ec7 th\u1ed1ng lai v\u00e0 t\u00edch h\u1ee3p IIoT<\/h2>\n\n\n\n

                  Khi ch\u00fang ta b\u01b0\u1edbc v\u00e0o th\u1eadp ni\u00ean 2020, ch\u00fang ta nh\u1eadn th\u1ea5y s\u1ef1 chuy\u1ec3n \u0111\u1ed5i v\u00e0 h\u1ed9i t\u1ee5 c\u1ee7a hai c\u00f4ng ngh\u1ec7 n\u00e0y. M\u00f4 h\u00ecnh \u201cHybrid\u201d \u0111ang b\u1eaft \u0111\u1ea7u xu\u1ea5t hi\u1ec7n.<\/p>\n\n\n\n

                  C\u00e1c nh\u00e0 m\u00e1y hi\u1ec7n \u0111\u1ea1i kh\u00f4ng c\u00f2n ch\u1ec9 thu\u1ed9c ri\u00eang v\u1ec1 quy tr\u00ecnh r\u1eddi r\u1ea1c hay quy tr\u00ecnh li\u00ean t\u1ee5c n\u1eefa. M\u1ed9t nh\u00e0 m\u00e1y s\u1ea3n xu\u1ea5t th\u1ef1c ph\u1ea9m c\u00f3 quy tr\u00ecnh tr\u1ed9n li\u00ean t\u1ee5c (thu\u1ed9c ph\u1ea1m vi DCS) cung c\u1ea5p nguy\u00ean li\u1ec7u cho d\u00e2y chuy\u1ec1n \u0111\u00f3ng chai t\u1ed1c \u0111\u1ed9 cao (thu\u1ed9c ph\u1ea1m vi PLC), sau \u0111\u00f3 chuy\u1ec3n sang giai \u0111o\u1ea1n chi\u1ebft r\u00f3t theo m\u1ebb.<\/p>\n\n\n\n

                  Trong tr\u01b0\u1eddng h\u1ee3p n\u00e0y, ch\u00fang ta th\u1ea5y s\u1ef1 ph\u00e1t tri\u1ec3n c\u1ee7a c\u00e1c b\u1ed9 \u0111i\u1ec1u khi\u1ec3n t\u1ef1 \u0111\u1ed9ng h\u00f3a l\u1eadp tr\u00ecnh (PAC), c\u1ee5 th\u1ec3 l\u00e0 c\u00e1c PLC cao c\u1ea5p c\u00f3 kh\u1ea3 n\u0103ng x\u1eed l\u00fd c\u00e1c v\u00f2ng l\u1eb7p t\u01b0\u01a1ng t\u1ef1 r\u1ea5t hi\u1ec7u qu\u1ea3, c\u00f9ng v\u1edbi gi\u1ea3i ph\u00e1p h\u1ec7 th\u1ed1ng \u0111i\u1ec1u khi\u1ec3n ph\u00e2n t\u00e1n (DCS) nh\u1eb9 h\u01a1n, th\u01b0\u1eddng c\u00f3 gi\u00e1 th\u00e0nh ph\u1ea3i ch\u0103ng h\u01a1n. C\u00e1c nh\u00e0 v\u1eadn h\u00e0nh th\u01b0\u1eddng k\u1ebft n\u1ed1i c\u00e1c PLC c\u1ee5c b\u1ed9 hi\u1ec7u su\u1ea5t cao v\u00e0o m\u1ea1ng DCS ho\u1eb7c SCADA r\u1ed9ng h\u01a1n, t\u1eeb \u0111\u00f3 n\u00e2ng cao t\u1ed1c \u0111\u1ed9 x\u1eed l\u00fd t\u1ea1i PLC \u0111\u1ed3ng th\u1eddi v\u1eabn duy tr\u00ec kh\u1ea3 n\u0103ng \u0111i\u1ec1u khi\u1ec3n t\u1eadp trung \u0111\u01b0\u1ee3c gi\u00e1m s\u00e1t cho to\u00e0n h\u1ec7 th\u1ed1ng.<\/p>\n\n\n\n

                  Khi l\u1ef1a ch\u1ecdn gi\u1eefa PLC v\u00e0 DCS, b\u1ea1n c\u1ea7n t\u00ednh \u0111\u1ebfn c\u00e1c y\u00eau c\u1ea7u t\u1eeb n\u0103m 2025 tr\u1edf \u0111i, khi m\u00e0 kh\u1ea3 n\u0103ng k\u1ebft n\u1ed1i \u0111\u00f3ng vai tr\u00f2 then ch\u1ed1t. Th\u1eddi \u0111\u1ea1i c\u1ee7a \u2018h\u1ed9p \u0111en\u2019 \u0111\u00e3 qua. C\u1ea3 hai h\u1ec7 th\u1ed1ng \u0111\u1ec1u s\u1eed d\u1ee5ng OPC UA, MQTT v\u00e0 Industrial Ethernet. D\u1eef li\u1ec7u t\u1eeb nh\u00e0 m\u00e1y c\u1ea7n \u0111\u01b0\u1ee3c t\u1ea3i l\u00ean \u0111\u00e1m m\u00e2y ho\u1eb7c h\u1ec7 th\u1ed1ng MES \u0111\u1ec3 ph\u00e2n t\u00edch. Ti\u00eau chu\u1ea9n c\u00f4ng nghi\u1ec7p hi\u1ec7n \u0111\u1ea1i l\u00e0 t\u00ednh m\u1edf: kh\u1ea3 n\u0103ng tr\u00edch xu\u1ea5t v\u00e0 x\u1eed l\u00fd d\u1eef li\u1ec7u l\u01b0u tr\u1eef t\u1eeb b\u1ed9 \u0111i\u1ec1u khi\u1ec3n tr\u00ean to\u00e0n nh\u00e0 m\u00e1y, \u0111\u1ed3ng th\u1eddi cho ph\u00e9p th\u1ef1c hi\u1ec7n b\u1ea3o tr\u00ec d\u1ef1 \u0111o\u00e1n tr\u00ean to\u00e0n b\u1ed9 quy tr\u00ecnh s\u1ea3n xu\u1ea5t.<\/p>\n\n\n\n

                  K\u1ebft lu\u1eadn: \u0110\u01b0a ra l\u1ef1a ch\u1ecdn h\u1ee3p l\u00fd nh\u1ea5t<\/h2>\n\n\n\n

                  Vi\u1ec7c l\u1ef1a ch\u1ecdn gi\u1eefa DCS v\u00e0 PLC th\u1ef1c ch\u1ea5t l\u00e0 m\u1ed9t quy\u1ebft \u0111\u1ecbnh kinh doanh c\u01a1 b\u1ea3n d\u1ef1a tr\u00ean nguy\u00ean t\u1eafc. \u0110i\u1ec1u n\u00e0y \u0111\u00f2i h\u1ecfi ph\u1ea3i nghi\u00ean c\u1ee9u k\u1ef9 t\u00e0i li\u1ec7u gi\u1edbi thi\u1ec7u v\u00e0 th\u1ef1c s\u1ef1 hi\u1ec3u r\u00f5 \u0111i\u1ec1u ki\u1ec7n l\u00e0m vi\u1ec7c hi\u1ec7n t\u1ea1i c\u1ee7a c\u00e1c nh\u00e2n vi\u00ean v\u1eadn h\u00e0nh v\u00e0 \u0111\u1ed9i ng\u0169 b\u1ea3o tr\u00ec. N\u1ebfu mu\u1ed1n t\u00f3m t\u1eaft so s\u00e1nh n\u00e0y, c\u1ea7n ph\u1ea3i xem x\u00e9t c\u00e1c \u0111i\u1ec3m kh\u00e1c bi\u1ec7t c\u1ed1t l\u00f5i sau \u0111\u00e2y:<\/p>\n\n\n\n

                  T\u00ednh n\u0103ng<\/td>PLC (B\u1ed9 \u0111i\u1ec1u khi\u1ec3n logic l\u1eadp tr\u00ecnh \u0111\u01b0\u1ee3c)<\/td>DCS (H\u1ec7 th\u1ed1ng \u0111i\u1ec1u khi\u1ec3n ph\u00e2n t\u00e1n)<\/td><\/tr>
                  \u1ee8ng d\u1ee5ng ch\u00ednh<\/td>\u0110i\u1ec1u khi\u1ec3n r\u1eddi r\u1ea1c (M\u00e1y m\u00f3c, L\u1eafp r\u00e1p)<\/td>\u0110i\u1ec1u khi\u1ec3n qu\u00e1 tr\u00ecnh (Nh\u00e0 m\u00e1y l\u1ecdc d\u1ea7u, H\u00f3a ch\u1ea5t)<\/td><\/tr>
                  Th\u1eddi gian ph\u1ea3n h\u1ed3i<\/td>R\u1ea5t nhanh (5\u201310 ms)<\/td>Deterministic \/ Trung b\u00ecnh (100\u2013500 ms)<\/td><\/tr>
                  Ki\u1ebfn tr\u00fac<\/td>T\u1eadp trung \/ \u0110\u1ed9c l\u1eadp<\/td>Ph\u00e2n t\u00e1n \/ T\u00edch h\u1ee3p<\/td><\/tr>
                  K\u1ef9 thu\u1eadt<\/td>C\u00f3 th\u1ec3 t\u00f9y ch\u1ec9nh (Y\u00eau c\u1ea7u nhi\u1ec1u c\u00f4ng s\u1ee9c \u0111\u1ed1i v\u1edbi c\u00e1c h\u1ec7 th\u1ed1ng quy m\u00f4 l\u1edbn)<\/td>C\u00f3 th\u1ec3 t\u00f9y ch\u1ec9nh (Kh\u00f4ng t\u1ed1n nhi\u1ec1u c\u00f4ng s\u1ee9c \u0111\u1ed1i v\u1edbi c\u00e1c h\u1ec7 th\u1ed1ng quy m\u00f4 l\u1edbn)<\/td><\/tr>
                  D\u1ef1 ph\u00f2ng<\/td>T\u00f9y ch\u1ecdn \/ Ti\u1ec7n \u00edch b\u1ed5 sung<\/td>B\u1ea3n \u0111\u1ecba \/ To\u00e0n h\u1ec7 th\u1ed1ng<\/td><\/tr>
                  C\u01a1 c\u1ea5u chi ph\u00ed<\/td>Chi ph\u00ed ph\u1ea7n c\u1ee9ng th\u1ea5p \/ Chi ph\u00ed t\u00edch h\u1ee3p cao h\u01a1n<\/td>Chi ph\u00ed ph\u1ea7n c\u1ee9ng cao \/ Chi ph\u00ed t\u00edch h\u1ee3p th\u1ea5p h\u01a1n<\/td><\/tr>
                  B\u1ea3o tr\u00ec<\/td>H\u1ec7 sinh th\u00e1i m\u1edf (C\u00e1c b\u1ed9 ph\u1eadn ti\u00eau chu\u1ea9n)<\/td>H\u1ec7 sinh th\u00e1i \u0111\u1ed9c quy\u1ec1n (S\u1ef1 ph\u1ee5 thu\u1ed9c v\u00e0o nh\u00e0 cung c\u1ea5p)<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

                  Kh\u00f4ng c\u00f3 h\u1ec7 th\u1ed1ng n\u00e0o \u201ct\u1ed1t h\u01a1n\u201d, ch\u1ec9 c\u00f3 c\u00f4ng c\u1ee5 ph\u00f9 h\u1ee3p cho t\u1eebng c\u00f4ng vi\u1ec7c m\u00e0 th\u00f4i.<\/strong> N\u1ebfu c\u01a1 s\u1edf c\u1ee7a b\u1ea1n \u0111\u00f2i h\u1ecfi t\u1ed1c \u0111\u1ed9 v\u1eadn h\u00e0nh cao, x\u1eed l\u00fd c\u00e1c s\u1ea3n ph\u1ea9m ri\u00eang l\u1ebb v\u00e0 c\u1ea7n t\u00ednh linh ho\u1ea1t, th\u00ec PLC ch\u00ednh l\u00e0 \u201ctr\u00e1i tim\u201d c\u1ee7a h\u1ec7 th\u1ed1ng. N\u1ebfu c\u01a1 s\u1edf c\u1ee7a b\u1ea1n \u0111\u00f3ng vai tr\u00f2 quan tr\u1ecdng trong vi\u1ec7c qu\u1ea3n l\u00fd c\u00e1c ph\u1ea3n \u1ee9ng h\u00f3a h\u1ecdc ph\u1ee9c t\u1ea1p, \u0111\u00f2i h\u1ecfi \u0111\u1ed9 s\u1eb5n s\u00e0ng cao v\u00e0 y\u00eau c\u1ea7u d\u1eef li\u1ec7u th\u1ed1ng nh\u1ea5t tr\u00ean to\u00e0n nh\u00e0 m\u00e1y, th\u00ec DCS ch\u00ednh l\u00e0 gi\u1ea3i ph\u00e1p d\u00e0nh cho b\u1ea1n.<\/p>\n\n\n\n

                  D\u00f9 b\u1ea1n tri\u1ec3n khai m\u1ed9t PLC linh ho\u1ea1t hay m\u1ed9t h\u1ec7 th\u1ed1ng DCS m\u1ea1nh m\u1ebd, s\u1ee9c m\u1ea1nh c\u1ee7a h\u1ec7 th\u1ed1ng v\u1eabn ph\u1ee5 thu\u1ed9c v\u00e0o m\u1eaft x\u00edch y\u1ebfu nh\u1ea5t. M\u1ed9t h\u1ec7 th\u1ed1ng \u0111i\u1ec1u khi\u1ec3n tr\u1ecb gi\u00e1 h\u00e0ng tri\u1ec7u \u0111\u00f4 la c\u00f3 th\u1ec3 b\u1ecb ng\u1eebng ho\u1ea1t \u0111\u1ed9ng ch\u1ec9 v\u00ec m\u1ed9t b\u1ed9 ngu\u1ed3n b\u1ecb h\u1ecfng ho\u1eb7c m\u1ed9t c\u1ea3m bi\u1ebfn kh\u00f4ng \u0111\u00e1ng tin c\u1eady.<\/p>\n\n\n\n

                  Duy\u1ec7t qua Danh m\u1ee5c c\u1ee7a OMCH<\/a> c\u00e1c b\u1ed9 ngu\u1ed3n c\u00f4ng nghi\u1ec7p, c\u1ea3m bi\u1ebfn v\u00e0 linh ki\u1ec7n b\u1ea3o v\u1ec7 hi\u1ec7n nay. H\u00e3y x\u00e2y d\u1ef1ng n\u1ec1n t\u1ea3ng \u0111\u00e1ng tin c\u1eady cho ki\u1ebfn tr\u00fac t\u1ef1 \u0111\u1ed9ng h\u00f3a c\u1ee7a b\u1ea1n b\u1eb1ng c\u00e1c thi\u1ebft b\u1ecb ph\u1ea7n c\u1ee9ng \u0111\u00e1p \u1ee9ng c\u00e1c ti\u00eau chu\u1ea9n cao nh\u1ea5t v\u1ec1 hi\u1ec7u su\u1ea5t v\u00e0 \u0111\u1ed9 b\u1ec1n.<\/p>\n\n\n\n

                  <\/p>","protected":false},"excerpt":{"rendered":"

                  M\u1ed9t trong nh\u1eefng quy\u1ebft \u0111\u1ecbnh kh\u00f3 kh\u0103n v\u00e0 quan tr\u1ecdng nh\u1ea5t trong l\u0129nh v\u1ef1c t\u1ef1 \u0111\u1ed9ng h\u00f3a l\u00e0 vi\u1ec7c l\u1ef1a ch\u1ecdn gi\u1eefa H\u1ec7 th\u1ed1ng \u0110i\u1ec1u khi\u1ec3n Ph\u00e2n t\u00e1n (DCS) v\u00e0 B\u1ed9 \u0111i\u1ec1u khi\u1ec3n Logic L\u1eadp tr\u00ecnh (PLC). \u0110\u00e2y l\u00e0 l\u1ef1a ch\u1ecdn quy\u1ebft \u0111\u1ecbnh c\u00e1ch th\u1ee9c ho\u1ea1t \u0111\u1ed9ng c\u1ee7a c\u01a1 s\u1edf s\u1ea3n xu\u1ea5t, c\u00e1ch v\u1eadn h\u00e0nh c\u1ee7a m\u00e1y m\u00f3c, lu\u1ed3ng d\u1eef li\u1ec7u, v\u00e0 t\u1ea5t nhi\u00ean, kh\u1ea3 n\u0103ng sinh l\u1eddi c\u1ee7a d\u00e2y chuy\u1ec1n s\u1ea3n xu\u1ea5t. \u0110\u1ec3 kh\u1eb3ng \u0111\u1ecbnh r\u1eb1ng h\u1ec7 th\u1ed1ng n\u00e0o l\u00e0 [\u2026]<\/p>","protected":false},"author":4,"featured_media":9351,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_seopress_robots_primary_cat":"none","_seopress_titles_title":"DCS vs PLC: Key Differences for Your Industry Choice","_seopress_titles_desc":"Confused about DCS vs PLC? Discover the differences and determine which control system is best for your industry in our comprehensive guide.","_seopress_robots_index":"","footnotes":""},"categories":[46],"tags":[],"class_list":["post-9358","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-industrial-control"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.omch.com\/vi\/wp-json\/wp\/v2\/posts\/9358","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.omch.com\/vi\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.omch.com\/vi\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.omch.com\/vi\/wp-json\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"https:\/\/www.omch.com\/vi\/wp-json\/wp\/v2\/comments?post=9358"}],"version-history":[{"count":1,"href":"https:\/\/www.omch.com\/vi\/wp-json\/wp\/v2\/posts\/9358\/revisions"}],"predecessor-version":[{"id":9368,"href":"https:\/\/www.omch.com\/vi\/wp-json\/wp\/v2\/posts\/9358\/revisions\/9368"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.omch.com\/vi\/wp-json\/wp\/v2\/media\/9351"}],"wp:attachment":[{"href":"https:\/\/www.omch.com\/vi\/wp-json\/wp\/v2\/media?parent=9358"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.omch.com\/vi\/wp-json\/wp\/v2\/categories?post=9358"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.omch.com\/vi\/wp-json\/wp\/v2\/tags?post=9358"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}