OPC Communication


#1

How can I know in my strategy if the communication with the OPC server is OK


#2

You could setup one of the OPC clients to regularly write to an OPC variable and monitor this in your strategy. Basically setup your own watchdog.


#3

Thank you for your reply

But I would like to do this without OPC variable


#4

I’m not sure if a read & clear works from OPC server, one topic on here suggests it doesn’t, but it may be worth testing again: OPC Read & Clear Counter

You can then have the OPC client call a read and clear and monitor this from your strategy.

Another idea (probably a bit out there), is to write a chart so your strategy is an OPC client to verify communication, essentially writing a simple OPC client. Not sure if anyone has done that before.


#5

You could use PAC Display (as an OPC client) via this method: