mehdi_khosh
Member
Hi every body
i ask question about some error at diagnostic buffer in S7-414H PLC around one month ago, but until now i didn't receive any comment.
is there any body to help me?
Thanks
previous message
hi every body
we have a S7-400 (S7-414H) PLC that controls the comprossor.
It has changed it's mode from RUN to DEFECTIVE,and diagnostic buffer showes this message:
memory test error in internal memory
No relevance for user (Z1): f1bc
Previous operating mode: RUN (redundant mode)
Requested operating mode: DEFECTIVE
Event occurred in the standby CPU in rack 1
Internal error, Incoming event
Please help me to find out the cause of the problem and give me the relevant solution to solve the problem.
With the best regards