Description
CPU占5%,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
Yaskawa 87820-03200 PLC Module 8782003200 **NIB**
Yaskawa 87820-10001 PLC Module 8782010001 **NIB**
GUARDMASTER SAFETY RELAY 440R-G23029 Minotaur MSR10 RD
ALLEN BRADLEY/GUARDMASTER 440R-B23020 SAFETY RELAY
AB 440R-J23044 SER A SAFETY RELAY GUARDMASTER MINOTAUR