Description
I/O接口占15%,输入设备占45%,输出设备占30%,线路占5%。前二项共20%故障属于PLC的内部故障,它可通过PLC本身的软、硬件实现检测、处理;而其余80%的故障属于PLC的外部故障。因此,PLC生产厂家都致力于研制、发展用于检测外部故障的专用智能模块,
FS Allen Bradley Analo Output Module 1746-NO4I N04I
Mitsubishi MELSEC Relay Output Module # AY13E
**NIB** Reliance Electric Drive Controller 57406
**NIB** Allen Bradley Encoder 845H-SJDZ14FWY1C
Allen Bradley Open Controller # 1747OC-EEEBA