Why Real Time Clock of M580 is reset after power cycle?

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Issue :

Controller Real Time Clock (RTC) is lost when power up in Modicon M580

Product Range :

Modicon M580 BMEx58x0x0x : Software Version 4.20 and Product Version 28

Resolution :

Upgrade your controller firmware version to 4.40 or after in order to solve this behavior.

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Released for: Schneider Electric Thailand

Published on:12/30/2025Last Modified on:12/30/2025