Siemens SIMATIC ET 200iSP Operating Instructions Manual page 33

Figure 2-3 Wiring the RS 485-IS Coupler
Connect the following:
1. The programming device (PG) and the CPU 416-3 DP (interface: X1 MPI) with a
programming device cable.
2. The mounting rail of the S7-400, including the grounding conductor.
3. The mounting rail of the ET 200iSP and the power supply PS with the equipotential bonding
PA. Use the grounding bolts to secure to the mounting rail.
4. The CPU 416-3 DP (interface: X2 DP) with the RS 485-IS coupler, as shown above using
a PROFIBUS DP cable (PROFIBUS connector 6ES7972-0BB50-0XA0).
5. The interface IM 152 with the RS-485-IS coupler, as shown earlier. Use a PROFIBUS DP
cable (PROFIBUS connector 6ES7972-0BB50-0XA0).
6. The TM PS-A, the RS 485-IS Coupler and the power supply module PS S7-400 with the
power supply.
Wire the ET 200iSP as shown below:
ET 200iSP
Operating Instructions, 11/2017, A5E00247483-07
Commissioning guideline
2.6 Wiring the Sample Configuration
33