Step 7 Program Examples; Step 7 Program Example For Cyclic Communication - Siemens SINAMICS G120 CU240B-2 Operating Instructions Manual

Connection to a fieldbus
6.3 Communication via PROFIBUS
6.3.5

STEP 7 program examples

6.3.5.1

STEP 7 program example for cyclic communication

S7 program for controlling the inverter
In the following example, the control and inverter communicate via standard telegram 1. The
control specifies control word 1 (STW1) and the speed setpoint, while the inverter responds
with status word 1 (ZSW1) and its actual speed.
Figure 6-6
124
Controlling the inverter via PROFIBUS
Inverter with CU240B-2 and CU240E-2 Control Units
Operating Instructions, 07/2010, FW 4.3.2, A5E02299792B AA