Hello. We have a template program used to report some monitoring data from installation to our Data Center, using 2020.3.1 firmware. To do that, we establish an OpenVPN connection from PLC to our central server an consume data throw an Ad Hoc OPC UA client. We have deployed this solution to many installation with no problem using “domestic” or non-firewall internet connections, but we have a problem with one that pass-throw a firewall an we don’t know exactly the network architecture because it is managed by third-party company. I want to expose the PLC behavior about what we could saw when we tried to deploy on this scenario:
* Thrid-party network management company allowed us fixed IP on the network with, theoretically, full access (all ports opened). * We conefigured PLC with all network parameters as they said us. * After a few seconds after Run led started in green, CPU reaches 100% and everything started to run slow (remote ssh connection, PLC Next engineer connection, ...) until PLC restart by its own. After that, PLC don't work more. * Otherwise, we tried to configure PLC and our program firstly as standalone, without internet connection. Everything was working until we connected PLC to the network, an started same behavior as described.Some times, PLC kept working with CPU at 100% (it didn’t restart) and we can saw that VPN connection was established an data were transferring well, so we think that PLC IP had all ports opened. I only want to expose that to know if it had happened to someone or if it could be a known issue when PLC with this firmware works under described conditions. I attach also Output log (it happened on 01.01.2021) Thanks, Manel