Is there a system tag that shows the OPC connection status?

Ignition
1

Is there a system tag that shows the OPC connection status? I found the function

system.opc.getServerState(opcServer)

Currently, here is how I’m doing it with an expression tag

switch( runScript("system.opc.getServerState('OPCConnection')", 5000), // value 'FAULTED', // case 1 1, // return 1 0 // default )

but i wanted to monitor a tag, not have a script where i convert text to an int. I looked through the system tags but i didn’t see anything that caught my eye.

Thanks!

2

Hi,

there isn´t tags to monitor it. You can use an expression tag and write the following code:

if((runScript(“system.opc.getServerState(‘Matrikon UCS’)”,5000)) = “CONNECTED”,
“1”,
“0”)

3

Thanks, i guess we did the same thing just in different ways.

4

most opc servers have system tags that should always have good quality as long as the connection is up. checking quality on these is another way you could verify a good connection.

5

Thanks, I am checking the system tag in Kepware to verify that the connection to the PLC is up. But if the connection is down to kepware i wont get any tags.

6

You could use the Sever/ServerStatus/State tag