詳細內容：中央處理單元(cpu)是可編程邏輯控制器的控制中樞。它按照可編程邏輯控制器系統程序賦予的功能接收并存儲從編程器鍵入的用戶程序和數據；檢查電源、存儲器、i/o以及警戒定時器的狀態，并能診斷用戶程序中的語法錯誤。當可編程邏輯控制器投入運行時，首先它以掃描的方式接收現場各輸入裝置的狀態和數據，并分別存入i/o映象區，然后從用戶程序存儲器中逐條讀取用戶程序，經過命令解釋后按指令的規定執行邏輯或算數運算的結果送入i/o映象區或數據寄存器內。等所有的用戶程序執行完畢之后，最后將i/o映象區的各輸出狀態或輸出寄存器內的數據傳送到相應的輸出裝置，如此循環運行，直到停止運行。 聯系人：黃生(銷售工程師) 移動電話:18030263579 固話:0592-6895320 QQ：2472574325 全球瘋狂低價甩賣 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