Siemens simatic et 200s Operating Instructions Manual page 154

1PosInc/Analog
4.6 Functions of the 1PosInc/Analog
Feedback Signals: Setting of Actual Value
Address
Byte 0
Bytes 1 to 3
Byte 4
Setting an Actual Value: Causes of Errors for JOB_ERR
Error Number
23
34
154
Assignment
Bit 3: SYNC
Actual value
(linear axis: 0 to 16 777 215; rotary axis: 0 to end of rotary axis - 1)
Bit 1: JOB_ERR
Bit 0: JOB_ACK
Meaning
ERR_ENCODER is displayed
Setting an Actual Value: actual value
coordinates ≥ end of rotary axis
What to Do
Check the encoder wiring
Operating Instructions, 05/2007, A5E00124871-04
ET 200S Positioning