8 GCS Commands
154
Version: 1.2.1
MS249E
C-863.12 Mercury Controller
operation).
If the reference move was successful, absolute motion will
then be possible in closed-loop operation.
The negative physical limit of the travel range is
represented by the negative limit switch of the positioner.
The difference in the values of the parameters 0x16 and
0x17 is set as the current position when the axis is at the
negative limit switch.
You can use a digital input instead of the negative limit
switch as source of the negative limit switch signal for FNL.
Refer to "Digital Input Signals" (p. 83) for further
information.
The motion can be stopped by #24 (p. 128), STP (p. 195)
and HLT (p. 158).
Use FRF? (p. 156) to check whether the reference move
was successful.
For best repeatability, referencing must always be done in
the same way.
If soft limits (parameters 0x15 and 0x30) are used to
reduce the travel range, the limit switches cannot be used
for reference moves.
Refer to "Referencing" (p. 28) and "Travel Range and Soft
Limits" (p. 25) for further information.
FPL (Fast Reference Move To Positive Limit)
Description:
Starts a reference move.
Moves the specified axis to the positive physical limit of its
travel range and sets the current position to a defined
value. See below for details.
If multiple axes are specified in the command, they are
moved synchronously.
Format:
FPL [{<AxisID>}]
Arguments:
<AxisID> is one axis of the controller, if not specified, all
axes are involved.
Response:
none