Siemens online connection

jmc013

Member
Join Date
Jun 2013
Location
Georgia
Posts
22
While attempting to change a CPU module (315-2 DP) on an old S7-300 system, I encountered something I haven't previously. It says there is no online connection with the CPU, that the connection partner is not communicating.

At first I thought "Hey, no big deal" but here I still am, scratching my head and trying to figure out why. Any ideas?
 

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