330180-50-00 BENTLY NEVADA PLC系统

A-B 1746-NIO4V
ABB 07KT93
SIEMENS 6ES5 470-7LC12
CUTLER-HAMMER JW3250F
Cutler-Hammer C825KN10 200A
B&R 4E0011.01-090
ABB 07KT93
Iwaki APN-4002-ERC
Partlow P6702
ABB 1MRS050729
ABB AI830A
ABB AI830A
BARKSDALE UAS3V3
FOXBORO FBM201
ABB 07KR51 DC24V
A-B 1746-NI16I
WESTINGHOUSE 1C31132G01
Fuji Electric PSR751S PS CONTROLLER
WESTINGHOUSE 1C31227G01

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Description

为监控PLC运行程序是否正常,PLC系统都设置了看门狗Watchingdog)监控程序。运行用户程序开始时,先清看门狗定时器,并开始计时。当用户程序一个循环运行完了,则查看定时器的计时值。若超时(一般不超过100ms),则报警。严重超时,还可使PLC停止工作。

Allen Bradley Industrial Computer Panel View

USED VMIC VMIVME-7698-146 Celeron Socket Computer Board

USED Xycom XVME-678 VMEbus PC/AT Processor Module

USED Xycom XVME-675 VMEbus CPU Control Board Processor