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详细内容:中央处理单元(cpu)是可编程逻辑控制器的控制中枢。它按照可编程逻辑控制器系统程序赋予的功能接收并存储从编程器键入的用户程序和数据;检查电源、存储器、i/o以及警戒定时器的状态,并能诊断用户程序中的语法错误。当可编程逻辑控制器投入运行时,首先它以扫描的方式接收现场各输入装置的状态和数据,并分别存入i/o映象区,然后从用户程序存储器中逐条读取用户程序,经过命令解释后按指令的规定执行逻辑或算数运算的结果送入i/o映象区或数据寄存器内。等所有的用户程序执行完毕之后,最后将i/o映象区的各输出状态或输出寄存器内的数据传送到相应的输出装置,如此循环运行,直到停止运行。 联系人:黄生(销售工程师) 移动电话:18030263579 固话:0592-6895320 QQ:2472574325 全球疯狂低价甩卖 Fujitsu B03B-4880-E402A DUAL CHANNEL HARD DRIVE MOUNT Telect E84C7A DSX 1 28ABC CKT 4X4 RNG NEW Marconi R700A66B125 NETWORK INTERFACE 66 TYPE BLOCK Vidar 5271 APS SS PROTECT MODULE Refurbished Conklin 322I4L4 SERIES B OCU-DP ALL RATE SC UNIT LUCENT TN1710 MEMORY 8MB UNIT. NEW Lucent KS-23626 L15 BNC CONNECTOR RIGHT ANGLE Refurbish Lucent DIXI-3-R2-24/7-DS3 Panel, CC 107489080, Refurb Lucent DIXI-3-R2-24/7-DS3 Panel, CC 107489080, New FC/FC 12.5 METER FIBER JUMPER Adtran 1200504E1 NetVanta 1224ST NEWOEM Carrier Access 740-0018 Navigator Quad DSX1 Card Tested Adtran 1200480E1 NetVanta 1000Base-SX SFP Mod LC Connec Reltec MU2B DISC*S MTCE UN RDT/COT Reltec TRU1B DISC*S1 TRMT/RCV UNIT Lucent 16E DDM-1000 OLIU1 REGENR Telecom Solutions 090-71010-87 TIMESOURCE 2500 GPS WIND Adtran 1200481E1 NetVanta 1000Base-LX SFP LC Connectors Adtran 4200510L2 NetVanta 1224R 24 Port Ethernet Switch 24x SC/SC Multimode Simplex Fiber Jumpers, 4M Free Ship 120x SC/SC Multimode Simplex Fiber Jumpers 4M Free Ship 12x SC/SC Multimode Simplex Fiber Jumpers, 5M Free Ship 24x SC/SC Multimode Simplex Fiber Jumpers, 5M Free Ship AirPax 2566-92001 15A BREAKER, BLADE STYLE LEL1-1RS4-28 120x SC/SC Multimode Simplex Fiber Jumpers 5M Free Ship 12x SC/SC Multimode Simplex Fiber Jumpers, 7M Free Ship AIRPAX 2566-93201 30 AMP BREAKER LEL1-1RS4-28434-3201 24x SC/SC Multimode Simplex Fiber Jumpers, 7M Free Ship 120x SC/SC Multimode Simplex Fiber Jumpers 7M Free Ship AIRPAX 2566-94401 50A BREAKER WHITE TIP BLADE TYPE 12x SC/SC Multimode Simplex Fiber Jumpers 10M Free Ship CISCO 15454EIASMBB84 SMB CONNECTOR REFURBISHED 24x SC/SC Multimode Simplex Fiber Jumpers 10M Free Ship Lucent DTP102 Series 1 ANYMEDIA CRAFT TEST UNIT 120x SC/SC Multimode Simplex Fiber Jumpers 10M FreeShip Adtran 1200590E1 NetVanta 1224STR DC NEWOEM Motorola SGLN4211BB MCC X8 CARD MULTI CHANNEL ACW621-0400-6配件 ACW621-0400-6配件 ACW621-0400-6配件 Adtran 4200590E2 NetVanta 1224STR DC NEWOEM Adtran 4200862L1 NetVanta 3200 w/ T1/FT1 NIM NEWOEM Motorola SGPN4007A POWER CONVERTER CDMA XCVR +27VDC 12x SC/SC Multimode Simplex Fiber Jumpers 20M Free Ship Adtran 4200865L1 NetVanta 3200 Dual T1/FT1 NIM NEWOEM 24x SC/SC Multimode Simplex Fiber Jumpers 20M Free Ship Lucent BBF2 DDM-2000 SYNC TMG GEN 120x SC/SC Multimode Simplex Fiber Jumpers 20M FreeShip Motorola SGLN4009KE POWER AND ALARM CARD
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