Heart beat or watch dog instruction for checking PLC's alive

aru.atsrobotics

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A
Join Date
Jul 2017
Location
windsor
Posts
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Hi Guys, I have two Allen-Bradley systems here

1) 1769-L30ERMS

2)1768-L43S

These both are safety plcs and its working at the moment. There are lots of tags shared between these two system through Produced/Consumed tags.

I heard about heart beat or watchdog instruction which can be used to monitor if the plcs are alive.

I haven't done it before. Could anyone please help me?
 

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