Hello,

RaviS

Hello Experts,

in my project PLC was running smoothly suddenly the timer delayed so i was checking the logic i got to know the system time used in the logic was not functioning properly, I checked the PLC diagnostics and got to know that the PLC system is not running please help.

 What is the exact order number of CPU plus version you are using.It can be found the the diagnostics buffer of CPU,Then search the SIOS for FW updates and problems cleared in different available updates.It is always recommended to use the latest available.

I hope this helps,

hdhosseini

the MLFB no. of the CPU : 6ES7 315-2EH14-0AB0  having v3.2

I have old backup working smoothly but i have done some major changes.

I think you need a firmware update, the latest version.Read more here(correction in version 2.3.6 :Modules that have run for approx. 500 days will no longer get stuck sporadically or show endlessly running retentive configured timers):

Operating System Updates for CPU 315-2 PN/DP (6ES7315-2EH14-0AB0)

But this is new PLC we started commissioning at site just before 60-70 days.

Check the exact firmware version in properties of CPU (online mode) or diagnostics buffer. My suggestion would be updating the firmware to the latest and checking  timer applications again.If your problem persists, try to Explain it and start a new SR.