Siemens simatic et 200s Operating Instructions Manual page 302

1PosSSI/Analog
6.9 Control and Feedback Signals
Access to Control and Feedback Interface in STEP 7 Programming
Feedback interface
Control interface
Load and transfer commands are also possible with CPU 3xxC, CPU 318-2 (as of V3.0), CPU 4xx (as of V3.0)
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Configured with STEP 7 via GSD file
(hardware catalog\PROFIBUS DP\ other field
devices\ET 200S)
Read with SFC 14 "DPRD_DAT"
Write with SFC 15 "DPWR_DAT"
Configured with STEP 7 via HW Config
1)
(hardware catalog\PROFIBUS DP\ET 200S)
Load command e.g. L PED
Transfer command e.g. T PAD
Operating Instructions, 05/2007, A5E00124871-04
ET 200S Positioning