PLC heartbeat to Factory Talk View SE

hasan_ali

Member
Join Date
Dec 2007
Location
Midlands
Posts
55
Hi,
I would like to develop watchdog between Factory talk view SE and Control Logix such that Factory Talk View SE should set a bit and PLC should reset. If there would be a comms loss between PLC and Factory Talk View, HMI should show PLC failed.
 
You don't need to develop a connection monitor yourself; just use the @IsPresent pre-defined Item in RSLinx Enterprise. If you also need to monitor the operation mode of the controller, use the @Mode item.
 
As Ken said, you can use the @IsPresent on the HMI side. If you need an alarm on the PLC side (for e.g: a buzzer), refer to technote 34183 that helps you setup a hearbeat.
 

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