I'm trying to get to the bottom of some long standing intermittent communication errors between the devices below in our environment. 

I'm not sure why the PXC100 devices are running different versions of firmware or what the specific implications would be in doing that. 

Does anyone know if there are any known bugs / issues with what we have in our environment below?

1 PXC100.E.D running firmware version V5.00.057

2 x PXC64U and 1 PXC12, all of which appear to be running V2 Firmware

Thank you

Double-post?

https://support.industry.siemens.com/tf/gb/en/posts/intermittent-communication-errors-with-the-pxcs/210230?page=0&pageSize=300 

Closed cause question posted twice.

The second thread with the subject Intermittent communication errors with the PXCs is published within the conference Desigo™ Building Automation System.

Best regards,