1756-L71 A-B 输出设备

ABB CI858K01
BENTLY NEVADA 3500/33
A-B 22C-D088A103
HONEYWELL 51198947-100
PROSOFT MVI56-MCMR
GE IC695CPU320
A-B 22C-D088A103
HONEYWELL CC-PCNT01
ABB CP450-T-ETH
ABB 3HAC025338-006
A-B 1394-SJT05-C-RL
ABB 3HAC025338-006
A-B MVI56-MCM
DEIF SCM4.2
REXROTH MSK040C-0600-NN-M1-UP1-NSNN

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Description

PLC外部输入、输出设备的故障率远远高于PLC本身的故障率,而这些设备出现故障后,PLC一般不能觉察出来,可能使故障扩大,直至强电保护装置动作后才停机,有时甚至会造成设备和人身事故。停机后,查找故障也要花费很多时间。为了及时发现故障

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