Dear all:
I have CU320(6SL3040-0MA00-0AA0) x1, SLM(6SL3131-6AE15-0AA0)x1, DMM(6SL3121-2TE13-0AA0)x2, CF card(6SL3054-0CE00-1AA0)x1.
I can do automatic configuration via starter and CF firmware v2.6.2. It could be operated nomally.
But when I replace CU320by CU320-2(6SL3040-1MA00-0AA0) with firmware V4.3.2(CF card is the same one), and the other modues areidentical such as SLM anddouble motormodule.Ican not do automatice configuration via starter. It always show a message "Topology: actual topology not permissible(Fault cause:8,preliminary component number: 202). I had doubt with that.
I just changed the CU320 to CU320-2, what reason cause this fault message? Because the actual topogy can not be accepted in starter, I really do not know what kind reason cause this fault message?
Does any one here had ever used CU320-2 to do control and can answer my query?

Thanks for your reply, it's helpful for me. Is there any way to solve this problem, or I just can replace my motor module by 6SL313xxxx-0AA3 if I want to work with CU320-2?