1/27/2015 11:53 AM | |
Joined: 7/2/2008 Last visit: 8/26/2024 Posts: 928 Rating: (308) |
HelloAshish Vasavir, It's not enough to know that EXT LED and MAINT LED are ON to tell you what exactly is wrong with your CPU. Please, upload the diagnostic buffer. Best regards, H-H
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This contribution was helpful to1 thankful Users |
5/6/2017 3:41 PM | |
Posts: 1 Rating: (0) |
Hi all, new user here, I am having the same issue with the MAINT LED illuminated on the 414-5H PN/DP CPU. We use two PLCs for redundancy. The first PLC 0 has no alarms, the second PLC 1 has the MAINT LED. Systems are operating normally, but we don't want to risk any downtime. Attached are the diagnostics for both PLCs, but there are many repeat messages. I am unsure how to address this. Our installer asked me to expand the diagnostics to show more than 120 items up to 3200 in the HW configuration, but for some reason, I am unable to change the amounts. The fields appear to be locked and not accessible in S7 on windows 7 platform. AttachmentDiagnose PLC 01.txt (393 Downloads) |
10/24/2018 8:57 AM | |
Joined: 4/28/2015 Last visit: 5/6/2024 Posts: 34 Rating: (6) |
Hi Expert, Power cycle in both CPU or only to one CPU? |