Siemens simatic et 200s Operating Instructions Manual page 272

1PosSSI/Analog
6.6 Functions of the 1PosSSI/Analog
Relative Positioning: Causes of Errors for POS_ERR
You must find out the causes of errors with JOB 15 (displays current values).
Error Number
3
5
7
13
272
Cause
ERR_ENCODER is displayed
The limit switch that lies in the direction in which
the drive is moved is active
Relative positioning:
Start with DIR_P and DIR_M = 0 or DIR_P and
DIR_M = 1
Direction of rotation of the drive and the
encoder varies
What to Do
Check the encoder wiring
Check your switches and the wiring as well as
the DI0 limit switch minus and DI1 limit switch
plus parameters
Check the wiring of the drive and the encoder
as well as the reversal of the direction of
rotation parameter
Operating Instructions, 05/2007, A5E00124871-04
ET 200S Positioning