Siemens simatic et 200s Operating Instructions Manual page 215

Control Signals: Relative Positioning
Address
Byte 0
Bytes 1 to 3
Feedback Signals: Relative Positioning
Address
Byte 0
Bytes 1 to 3
Parameters: Relative Positioning
Parameters
Drive
Switch-off
difference
Switchover
difference
ET 200S Positioning
Operating Instructions, 05/2007, A5E00124871-04
Assignment
Bits 0.7 to 0.4:
Bit 7 6
0 1
Bit 3: SPEED (SPEED=0 is creep feed; SPEED=1 is rapid feed)
Bit 2: DIR_M
Bit 1: DIR_P
Bit 0: START
Distance
(linear axis: 0 to 16 777 215; rotary axis: 0...16 777 215)
Assignment
Bit 3: SYNC
Bit 2: POS_ DONE
Bit 1: POS_ERR
Bit 0: POS_ACK
Actual value
(0 to encoder range - 1)
Meaning
You can change the switch-off difference with
JOB 3.
You can change the switchover difference
with JOB 4.
5.6 Functions of the 1PosSSI/Digital
5 4
MODE 4 = Relative Positioning
0 0
Value range
0 - 65 535
0 - 65 535
1PosSSI/Digital
Default setting
100
1000
215