Siemens SIMATIC ET 200S Operating Instructions

1PosInc/Digital
3.6 Functions of the 1PosInc/Digital
ET 200S Positioning
Operating Instructions, 05/2007, A5E00124871-04
91
3.6.12 Changing the Switchover Difference (JOB 4)
Definition
Changing the switchover difference allows you to adjust the drive control to adapt to any
changes in the load and mechanical conditions.
Supply the control interface with the new switchover difference, and activate JOB 4.
The 1PosInc/Digital accepts the specified switchover difference. The switchover difference
remains valid until the parameter assignment of the 1PosInc/Digital is changed.
Effect on the MODEs
MODE What Happens
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Inching
–
Absolute Positioning
Relative Positioning
The following responses are possible:
• Distance to the destination ≤ the switchover difference
is reached or overshot; there is an immediate reduction from rapid feed to
creep feed. In this case the distance covered in creep feed is less than
(switchover difference - switch-off difference).
• Distance to the destination > the switchover difference
The drive is moved using rapid feed, even if it was switched over to creep
feed beforehand.
Control Signals: Change Switchover Difference
Address Assignment
Bits 4.7 to 4.4 :
7 6 5 4 Bit
0 1 0 0
JOB 4 = Change the switchover
difference
Byte 4
Bit 0: JOB_REQ
Bytes 5 to 7 Switchover difference
(linear axis: 0 to 16 777 215; rotary axis: 0...16 777 215)
Feedback Signals: Change Switchover Difference
Address Assignment
Byte 4 Bit 0: JOB_ACK
See also
CPU/Master Stop and RESET State (Page 104)

Siemens SIMATIC ET 200S Specifications

General

Brand	Siemens
Model	SIMATIC ET 200S
Category	I/O Systems
Language	English