10/24/2015 3:17 PM | |
Posts: 1 Rating: (0) |
Hi Guys, We're having also problem in CPU 414-4H redundancy. Power of CPU was turned-off for almost 1 day and backup battery was drained. Since the memory is only a RAM, program was lost. We downloaded our back-up program but output for CPU failure alarm was active and we can't start out equipment. We found one flag for redundancy was active triggering the alarm. Both CPU is in RUN mode. No alarm was active in CPU, both in normal status. Do you have idea how to correct restore redundancy fault? Thanks, Rosty ------------------------------------------------------------------------------------------ |
Last edited by: Min_Moderator at: 10/25/2015 5:06:27 PMNew subject after splitting |
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10/26/2015 12:05 AM | |
Joined: 11/29/2011 Last visit: 8/19/2024 Posts: 1359 Rating: (232) |
Hi, Link-Up/Update? Have a look at SIMATIC Fault-tolerant systems S7-400H under chapter "12.1 Effects of link-up and updating". Please upload your diagnostic buffer to see the sequence of events. |
- What you read here, please check with manuals and your requirements. |
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