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