M525 stopped working

pascal37

I confirm the solution is stable over >50 days when using port 1.3 :

... but not with port 1.1, where serial communications crashes < 10 days !
If you did not find a software issue related to port RS485-1.1 on Axon M525, there should be a hardware issue with my PLC !

I have bought this PLC because I need 3 RS485 ports, so using port 1.3 over 1.1 is not a solution...

Can you please replace this unit ?
Many thanks in advance and kind regards,

Pascal

martin_triska

Hello @pascal37,

thank you for the feedback. So, let us sum it up:

On ports other than 1.1, you've never seen the issue yet (tested over 50 days without reboot).
On port 1.1, the issue appears always in a few (approx. 10) days.
There is no correlation with any item in the system log (dmesg) recorded in the moment of failure.
Flash to the latest version 5.50 has not solved it.
An older PLC M505 does not have this problem (is the FW and image versions in it also the latest?)

If so, you are right - it seems to the issue is hardware-based and the unit has to be replaced.

pascal37

Hi @martin_triska,

Yes, that sums up the situation well, so I'll write to support@unipi.technology for replacement request.

Many thanks,

Pascal