Description of IO-Link
7100.006434_Bus description_PSD4xx_IO_G_ENG
26
17.08.2020
3.6.
Detailed description of control bits
Bit 0
:
Manual run to larger values
Bit 1
:
Manual run to smaller values
Bit 2
:
Transfer target value:
If bit 2 is not set, the target value is not accepted; instead, by setting the
release bit, a positioning run can be carried out to the target value last
transferred and marked as valid.
Bit 3
:
Reserved, must be set to 0
Bit 4
:
Release: Run commands will only be executed if this bit is set.
This bit must be set for positioning runs and manual runs.
If this bit is reset during a run, the run will be aborted and status bit 5
(“Run aborted”) will be set.
Bit 5
:
Reserved, must be set to 0
Bit 6
:
Run without loop: If this bit is set during positioning runs, all target
positions will be approached directly (independently of the current value
in ISDU 124) without any loop.
Bit 7-12
:
Reserved, must be set to 0
Bit 13
:
Toggle bit
The control unit can recognize when new process data are processed
by the drive.
Bit 14-15
:
Reserved, must be set to 0
If this bit is set, the target value sent in the same process data telegram
is accepted as the new valid target value. A positioning run that starts
simultaneously or later uses this target value as the new target position.
If a positioning is to be started immediately together with the acceptance
of the target value, bit 4 (
“release”) must be set simultaneously in
addition to bit 2.
Always when a control word is received, the drive writes the value of this
bit in status byte bit 2.
