I am currently trialing the Omron FINS driver on a new project.
OPC UA V8.0.9
Omron Driver 3.0.9
I have set up the Omron Device using the UDP connection. It connects fine and shows ‘Bound’.
I have set up a single ‘hello world’ tag to trial communication to an Omron CP1L-E PLC.
Tag is addressed to ns=1;s=[TestPLC]D47
This works fine. The tag reports the correct value, and I can write new values to the PLC.
Issue: intermittently the tag quality goes bad and stays bad. I cannot read/write the value. The device connection continues to show ‘bound’. To reestablish the communication I can disable the device, wait a minute or so, and re-enable the device. The tag communication is then immediately ‘good’ for several minutes to many hours.
- These problems could be due to the fact that this connection is across a VPN, something which we have been doing with Kepware for many years. The VPN itself doesn’t appear to exhibit any issues and the whole time we are having problems we are using the same VPN to access another NX Series Omron PLC via the Ethernet/IP driver no problem. I am also using the VPN to access designer/client sessions from the gateway with no problems at all.
- I have been able to establish a TCP connection the PLC, however have not been successful at any time to communicate with a test tag.
I will try to set up a wireshark trace which may give a few clues. Will also have a look in the gateway logs…
Any ideas ?