PLC的输入与输出最好分开走线，开关量与模拟量也要分开敷设。模拟量信号的传送应采用屏蔽线，屏蔽层应一端或两端接地，接地电阻应小于屏蔽层电阻的1/10.

　　● 交流输出线和直流输出线不要用同一根电缆，输出线应尽量远离高压线和动力线，避免并行。

　I/O端的接线

　　输入接线

　　● 输入接线一般不要太长。但如果环境干扰较小，电压降不大时，输入接线可适当长些。

　　● 输入/输出线不能用同一根电缆，输入/输出线要分开。

　　● 尽可能采用常开触点形式连接到输入端，使编制的梯形图与继电器原理图一致，便于阅读。
ALLEN BRADLEY 1747-OCUS OPEN CONTROLLER FAMILY UPDATE SERVICE
ALLEN BRADLEY 1747-OCVGA1 VGA OPTION MODULE FOR 1747 OPEN CONTROLLER PCI BUS
ALLEN BRADLEY 1747-OCVGAE COMBO OPTION MODULE
ALLEN BRADLEY 1747-PCIAA 1747 PCI BUS INTERFACE KIT
ALLEN BRADLEY 1747-PCIAB 1747 PCI BUS INTERFACE KIT
ALLEN BRADLEY 1747-PCIBA 1747 PCI BUS INTERFACE KIT
ALLEN BRADLEY 1747-PCIBB 1747 PCI BUS INTERFACE KIT
ALLEN BRADLEY 1747-PCIC INTERCONNECT CABLE 9.84 FT
ALLEN BRADLEY 1747-PCIC2 INTERCONNECT CABLE 32.81 FT
ALLEN BRADLEY 1747-PCIL 1746 CHASSIS INTERFACE MODULE
ALLEN BRADLEY 1747-PCINT API SOFTWARE FOR WINDOWS NT
ALLEN BRADLEY 1747-PCIS PCI CARD WITH 256K STATIC RAM
ALLEN BRADLEY 1747-PCIS2 PCI CARD WITH 1 MEG STATIC RAM
ALLEN BRADLEY 1747-PIC CONVERTER RS 232/DH 485
ALLEN BRADLEY 1747-PLXCLNTCBS RENEWAL CONTRACT
ALLEN BRADLEY 1747-PSD PROGRAM STORAGE DEVICE
ALLEN BRADLEY 1747-PT1 HANDHELD TERMINAL, 6’ CABLE, NO BATTERY/MEM PAK
ALLEN BRADLEY 1747-PT1CC HANDHELD TERMINAL CARRYING CASE
ALLEN BRADLEY 1747-PTA1E MEMORY PAK-ENGLISH
ALLEN BRADLEY 1747-PTA1F MEMORY PAK- FRENCH
ALLEN BRADLEY 1747-PTA1G MEMORY PAK- GERMAN
ALLEN BRADLEY 1747-PTA1I MEMORY PAK- ITALIAN
ALLEN BRADLEY 1747-R21 ENGLISH MEMORY PAK
ALLEN BRADLEY 1747-R21F FRENCH MEMORY PAK
ALLEN BRADLEY 1747-R5 REPLACEMENT PARTS
ALLEN BRADLEY 1747-R7 REPLACEMENT PARTS
ALLEN BRADLEY 1747-RL302 UPGRADE KIT
ALLEN BRADLEY 1747-RL401 UPGRADE KIT
ALLEN BRADLEY 1747-SCNR CONTROLNET SCANNER FOR SLC PLATFORM
ALLEN BRADLEY 1747-SDN DEVICENET SCANNER MODULE
ALLEN BRADLEY 1747-SN REMOTE I/O SCANNER MODULE
产品名称：ABPLC/1747-PLXCLNTCBS
产品手机链接：http://m.vooec.com/trade_488282164.html
产品网站链接：http://www.vooec.com/sjshow_488282164/