[?]: requires annual maintenance for PLC ?

[Carlos]

one plc S7300 or S5(x) requires annual maintenance
(except cleanup of dust or charge battery)

best regards
Carlos

[krank]

i think NO

[Carlos]

i think NO

Thanks krank for reply
more opinions ?

[XMAS]

It is better not to do any maintenance on the PLCs other than blowering to remove the dust accumulated on the plc modules.
Please remember to switch off power to the racks before doing any maintenance.
From my personal experience, i will recommend that you SHOULD NOT remove/unplug the modules from the racks especially in case of S7-400 / S5 racks.
These racks are very sensitive to dust and the "maintenance" might result into unforeseen problems due to dust ingress.

Other than the above, checking tightness of mounting screws and a regular backup of online data always helps!

Cheers!

XMAS

[Carlos]

thanks XMAS for your reply, also grateful for the pm by CoMod.
can close the topic and once again grateful for the help
Carlos