Hi,
I have a problem with coordinator module 6ES5923-3UC11 he display light tilt led title "IF FAULT" led. He have colaborate with 2 units CPU928.
Propably problem is in serial communication - not connected. Who port is not connected??
S5 Coorrinator 6ES5923-3UC11
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marcinjacka
- Posts: 2
- Joined: Mon Jun 21, 2021 9:06 am
Re: S5 Coorrinator 6ES5923-3UC11
It's propalby if cpu unit 928 is ready(green led still light up). CPU unit have internal problem with controller?