Siemens simatic et 200s Operating Instructions Manual page 347

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
ET 200S Positioning
Operating Instructions, 05/2007, A5E00124871-04
Assignment
Bit 3: SYNC
Actual value
at incremental encoder (linear axis: 0 to 16 777 215; rotary axis: 0 to end of rotary
axis-1), at SSI encoder (0 to encoder range - 1)
Bit 1: JOB_ERR
Bit 0: JOB_ACK
Meaning
ERR_ENCODER is displayed
Actual-value coordinates ≥ end of rotary axis (at
incremental encoders) or actual-value coordinates
≥ encoder range (at SSI encoders)
1PosUniversal/Digital
7.6 Functions of the 1PosU
What to Do
Check the encoder wiring
347