I'm involved in a project and I have little time using the Step7, in this project is to use a Sinumerik 840D sl, NCU 317-3PN/DP 710.3PN with PLC, with five being controlled servo motors and I have a Control Unit CU320-2 DP with which four servomotors were controlled,
I'm using the Step 7 software 5.5 and the toolbox for SINUMERIK, in HW config and added the NCU and in addition to other network nodes and inputs and outputs I PLS, and had trouble setting the CU320,
someone will have a similar example, to add correctly all devices in HW config