Siemens SIPART PS2 Operating Instructions Manual page 210

Electropneumatic positioner with profibus pa

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Functions/operations using PROFIBUS PA

9.3 Cyclic data transfer

A small STEP 7 program that establishes cyclic exchange with the positioner using

PROFIBUS PA (positioner) is given below.

Example of a small PROFIBUS DP/PA system

PC or PG (master class 2)

Power supply

Bus terminator

DP/PA coupler/link

CPU SIMATIC S7 (master class 1)

MPI cable (required for commissioning

and monitoring)

SIPART PS2 with PROFIBUS PA

Operating Instructions, 05/2019, A5E00127926-AC