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| 8/16/2019 4:09 PM | |
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Posts: 4 Rating:
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Hi, We have S7-417-5H configured in redundant mode. Like this total 6 AS are available, installed in different panels, configured independent of each other. System is in service since 2015. Some times, the standby CPU of the redundant set, fails with all LEDs flashing. The other CPU enters solo mode. In this state, failed CPU can not be connected through Engg station. CPU becomes normal only after Mres operation. anybody facing same problem? Can someone suggest me the reason and remedy for this. Thanks in advance Regards Mohan ------------------------------------------------------------------------------------------ |
Last edited by: Jen_Moderator at: 08/19/2019 08:34:51New subject after splitting |
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| 10/14/2019 8:37 PM | |
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Posts: 19 Rating:
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Did you find a solution to this problem? I am having a similar issue! |
| 10/15/2019 8:56 AM | |
Joined: 12/10/2018 Last visit: 6/27/2024 Posts: 109 Rating:
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Hello dear friend The issue that you mentioned may happen for two reasons: 1. It is possible to encounter it by inserting wrong memory modules in each CPU. If the case can be solved by a power cycle without any battery, the CPU is OK to use. (According to Mr. mdhosseini an experienced member of this site) 2. Another reason (All LEDs blinking) relates to the Firmware Updating. In normal mode, by upgrading The firmware of CPU(f.e: firmware from 4.5.3 change to 4.5.7 ) the problem will be solved. Both CPUs (Master and standby) firmware must be the same. Note: if the problem after upgrade the firmware not solved, downgrade both CPUs Firmware to the previous version again. *** You can find out the Firmware of CPU just by searching CPU name in google (for example/Upgrade 6ES7414-4HJ04-0AB0 Firmware). |
Last edited by: fariborz M at: 10/15/2019 09:20:25 |
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