Mitsubishi Electric MELSEC Q Series Programming Manual page 129

4 PARAMETERS FOR POSITIONING CONTROL
-2147483648  Upper/lower stroke limit value 
(2) Setting range of upper/lower stroke limit value (SV13 only)
Upper/lower stroke limit value can be set within the following range.
(3) Stroke limit invalid setting
The unlimited length feed is possible by setting the stroke limit to invalid even the
control unit is "other than degree axis" (mm, inch, pulse). When "(Upper stroke
limit) = (Lower stroke limit)" is set as the upper and lower stroke limit is set in the
fixed parameter, the stroke limit becomes invalid and the unlimited length feed is
possible.
Refer to Section 6.1.5 for details of degree axis.
2147483647
-2147483648
Number of pulses per rotation (AP)
Travel value per rotation (AL)
QDS
-5
Current value [pulse/0.1 m/10
Shortcut operation for ABS instruction
Start point
0
End point
4 - 8
inch]
QD
 2147483647