1746-F2
1746-F2
作为生产过程自动化领域的计算机控制系统,传统的DCS仅仅是一个狭义的概念。如果以为DCS只是生产过程的自动化系统,那就会引出错误的结论,因为现在的计算机控制系统的含义已被大大扩展了,它不仅包括过去DCS中所包含的各种内容,还向下深入到了现场的每台测量设备、执行机构,向上发展到了生产管理,企业经营的方方面面。传统意义上的DCS现在仅仅是指生产过程控制这一部分的自动化,而工业自动化系统的概念,则应定位到企业全面解决方案,即total solution 的层次。只有从这个角度上提出问题并解决问题,才能使计算机自动化真正起到其应有的作用。
进入九十年代以后,计算机技术突飞猛进,更多新的技术被应用到了DCS之中。PLC是一种针对顺序逻辑控制发展起来的电子设备,它主要用于代替不灵活而且笨重的继电器逻辑。现场总线技术在进入九十年代中期以后发展十分迅猛,以至于有些人已做出预测：基于现场总线的FCS将取代DCS成为控制系统的主角。
现货，现货，降降降，火火火，火火火……
现货，现货，降降降，火火火，火火火……
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ALLEN BRADLEY 1785-ACC5LA ACCESSORY KIT FOR PLC-5/11,5/20
ALLEN BRADLEY 1785-ACC5LB ACCESSORY KIT FOR PLC-5/30 OR HIGHER
ALLEN BRADLEY 1785-ACC5LT ACCESSORY KIT FOR CLASSIC PLC-5
ALLEN BRADLEY 1785-BCM PLC-5 BACKUP COMM MOD
ALLEN BRADLEY 1785-BEM PLC-5 BACKUP COMMUNICATIONS EXPANSION MODULE
ALLEN BRADLEY 1785-CHORAD REMOTE ACCESS MODEM KIT FOR CONN TO SER.CHAN PLC5
ALLEN BRADLEY 1785-CHORADC3B MODEM CABLE FOR PLC-5 TO MODEM
ALLEN BRADLEY 1785-CHBM BACKUP MEMORY CARTRIDGE
ALLEN BRADLEY 1785-ENET PLC-5 ETHERNET/IP EXPANSION MODULE FOR PLC-5
ALLEN BRADLEY 1785-KA DATA HGWY PLUS INTERFACE MODULE
ALLEN BRADLEY 1785-KA3 PLC-2 DATA HGWY PLUS COMM ADAPTER MOD
ALLEN BRADLEY 1785-KA5 COMM MODULE DATA HWY PLUS TO DATA HWY 485
ALLEN BRADLEY 1785-KA5P COOMUNICATION MODULE,PANEL MOUNT
ALLEN BRADLEY 1785-KE DATA HGWY PLUS RS232 INTERFACE MOD
ALLEN BRADLEY 1785-L11B PLC-5/11 PROCESSOR, (1) DH+/RIO PORT, 8K MEMORY
ALLEN BRADLEY 1785-L20B PLC-5/20 PROCESSOR (1) DH+/RIO PORT, (1) DH+ PORT W/16K
ALLEN BRADLEY 1785-L20C15 PLC-5/20C FOR ConTROLNET PHASE 1.5
ALLEN BRADLEY 1785-L20E PLC 5/20 ETHERNET ConTROLLER 16K WORD SRAM
ALLEN BRADLEY 1785-L26B PROTECTED PLC 5/20 CONTROLLER, 16K WORD SRAM
ALLEN BRADLEY 1785-L30B PLC-5/30 CONTROLLER,32K WORD SRAM
ALLEN BRADLEY 1785-L40B PLC 5/40 PROCESSOR
ALLEN BRADLEY 1785-L40C15 PLC-5/40C FOR ConTROLNET PHASE 1.5
ALLEN BRADLEY 1785-L40E PLC 5/40 ETHERNET CONTROLLER, 48K WORD SRAM
ALLEN BRADLEY 1785-L40L EXTENDED LOCAL 5/40, 48K SRAM
ALLEN BRADLEY 1785-L46B PROCESSOR MODULE PLC5/40 48K WORD SRAM, PROTECTED
ALLEN BRADLEY 1785-L46C15 PROTECTED PLC 5/40 CONTROLLER, 48K WORD SRAM
ALLEN BRADLEY 1785-L60B ConTROLNET PLC-5/60 CTRLR,64K WORD SRAM
ALLEN BRADLEY 1785-L60L LOCAL PROCESSOR 64K SRAM
ALLEN BRADLEY 1785-L80B PLC 5/80 ConTROLLER 100K WORD SRAM
ALLEN BRADLEY 1785-L80C15 PLC 5/80 ConTROLNETPHASE 1.5
ALLEN BRADLEY 1785-L80E ETHERNET/IP PLC-5/80 ConTROLLER 100K WORD SRAM
ALLEN BRADLEY 1785-L86B PLC 5/80 ConTROLLER 100K WORD SRAM
ALLEN BRADLEY 1785-LT PLC-5/15 PROCESSOR MODULE, 6K MEMORY
ALLEN BRADLEY 1785-LT2 PLC-5/25 PROCESSOR MODULE, 13K MEMORY
ALLEN BRADLEY 1785-LT3 PLC-5/12 PROCESSOR MODULE, 6K MEMORY
ALLEN BRADLEY 1785-LT4 PLC-5/10 PROCEESOR MODULE, 6K MEMORY
ALLEN BRADLEY 1785-M100 PLC-5/80 EEPROM MEMORY CARTRIDGE,100K
ALLEN BRADLEY 1785-ME16 EEPROM MEMORY CARTRIDGE
ALLEN BRADLEY 1785-ME32 PLC-5/30 EEPROM MEMORY CARTRIDGE
ALLEN BRADLEY 1785-ME64 PLC-5/40 5/60 EEPROM MEMORY CARTRIDGE
ALLEN BRADLEY 1785-MJ 8K EEPROM MEMALLEN BRADLEY 1785-MK 16K EEPROM CARTRIDGE
ALLEN BRADLEY 1785-MS PLC-5 8K RAM MEMORY MODULE
ALLEN BRADLEY 1785-MR 4K RAM MEMORY CARTRIDGE
ALLEN BRADLEY 1785-O5C PLC
ALLEN BRADLEY 1785-TAM THIN-WIRE TRANSCEIVER CABLE KIT
ALLEN BRADLEY 1785-TAS THIN-WIRE TRANSCEIVER CABLE KIT
ALLEN BRADLEY 1785-TBM THIN-WIRE TRANSCEIVER CABLE KIT
ALLEN BRADLEY 1785-TBS THIN-WIRE TRANSCEIVER CABLE KIT
ALLEN BRADLEY 1785-TR10B2 AUI TO THIN WIRE ENET TRA
ALLEN BRADLEY 1785-TR10B5 AUI TO THIN WIRE ENET TR
ALLEN BRADLEY 1785-TR10BF AUI TO F.OPTIC ENET TRANS
ALLEN BRADLEY 1785-TR10BT AUI TO TW PAIR ENET TRANS
ALLEN BRADLEY 1785-V30B VME PLC 5/30 ConTROLLER 32K WORD SPAM
ALLEN BRADLEY 1785-V40B VME PLC 5/40 ConTROLLER 48K WORD SPAM
ALLEN BRADLEY 1785-V40L VME PLC 5/40 ConTROLLER W/EXT LOCAL PORT
ALLEN BRADLEY 1785-V80B PROCESSOR MODULE VME/PLC5 100K WORD SRAM