Reference Manual

PMAC 2 Software Reference
72 PMAC I-Variable Specifiation
Ix13 Motor x Positive Software Position Limit
Range
+/- 2
35
Units
Encoder Counts
Default
0
Remarks
Ix13 sets the position for Motor x which if exceeded in the positive direction causes a
deceleration to a stop (controlled by Ix15) and allows no further positive position incre-
ments or positive output commands as long as the limit is exceeded. If this value is set to
zero, there is no positive software limit (if you want 0 as a limit, use 1). This limit is
automatically de-activated during homing search moves, until the home trigger is found. It
is active during the post-trigger move.
Starting in firmware 1.15, bit 17 of Ix25 does not de-activate the software limits.
Permanent de-activation is done by setting the value of the software limit to zero.
This limit is referenced to the most recent power-up zero position or homing move zero
position. The physical position at which this limit occurs is not affected by axis offset
commands (e.g. PSET, X=), although these commands will change the reported position
value at which the limit occurs.
See Also
Hardware Overtravel Limits, Software Overtravel Limits (Making Your Application Safe)
I-variables Ix14, Ix15.
Ix14 Motor x Negative Software Position Limit
Range
+/- 2
35
Units
Encoder Counts
Default
0 (Disabled)
Remarks
Ix14 sets the position for Motor x which if exceeded in the negative direction causes a
deceleration to a stop (controlled by Ix15) and allows no further negative position
increments or negative output commands as long as the limit is exceeded. If this value is
set to zero, there is no negative software limit (if you want 0 as a limit, use -1). This limit
is automatically de-activated during homing search moves, until the trigger is found. It is
active during the post-trigger move.
Starting in firmware 1.15, bit 17 of Ix25 does not de-activate the software limits.
Permanent de-activation is done by setting the value of the software limit to zero.
This limit is referenced to the most recent power-up zero position or homing move zero
position. The physical position at which this limit occurs is not affected by axis offset
commands (e.g. PSET, X=), although these commands will change the reported position
value at which the limit occurs.
See Also
Hardware Overtravel Limits, Software Overtravel Limits (Making Your Application Safe)
I-variables Ix13, Ix15.