输入模板的L D指示当一个离散型输入设备合闸后,与之对应的输入LED指示灯点亮,表明信号已经传递到模板。如果指示灯没有点亮,在模板接线端子板上可以检测到一个电压或阻值:如果接线端上的电压值正确,利用设计软件检查PLC中与该点相对应的输入位。如果软件中显示输入位为逻辑1,那就是模板的LED指示灯电路有问题.
MODICON AS-C484-265 NSFP ASC484265
ALLEN BRADLEY 1336S-B020-AA-E?N5-GM1-HA2-L6 NSFP 1336SB0
ALLEN BRADLEY 1336F-BX040-AA-?EN-HAS2-L6 USPP 1336FBX040
SQUARE D NF1000G3N2 NSFP NF1000G3N2
ALLEN BRADLEY 1756-L62 NSPP 1756L62
INDRAMAT MAC-112B-0-GD-3?-C/130-A-0 USPP MAC112B0GD3C130?
RELIANCE ELECTRIC 57552-4D USPP 575524D
RELIANCE ELECTRIC 57552-D USPP 57552D
RELIANCE ELECTRIC 45C-231 USPP 45C231
SIEMENS 6SE9-215-8DB40 NSPP 6SE92158DB40
ALLEN BRADLEY 1756-L61 FNFP 1756L61
FANUC A20B-0006-0430 USPP A20B00060430
CINCINNATI MILACRON 5244179 FNFP 5244179
WINSMITH A-44381X0GC NSFP A44381X0GC
ALLEN BRADLEY 1326AB-B740C-21?-K7 USPP 1326ABB740C21K7
MEASUREX 08495006 USPP 08495006
GENERAL ELECTRIC EVWHS553CD04 USPP EVWHS553CD04