I know I have read in one of the many manuals that you cannot  add/insert an Active Bus Module with the rail powered on.

I have searched and searched many manuals and I can't seem to find where that is written.

Does anyone know which manual it is in.

It is driving me crazy.

Thanks,

KSB

Hello KSB,

here is one example for the reaction of the PLC if you disconnect the server-module, a base unit or some more.

Please see at his manual at page 27 (chapter  5.3.2)

https://support.industry.siemens.com/cs/document/109475186/simatic-et-200sp-im-155-6-pn-ba-interface-module?dti=0&lc=en-WW

I hope this help.

regards
CaOd