Rockwell Automation 1746-HSRV SLC Servo Control Module User Manual - Manual (Page 179)

Publication 1746-6.1.2 - July 2000
A-6 Input/Output Quick Reference
Positive Overtravel
Limit
(Axis) M0:s.8,s.9 Negative Overtravel
Limit to +axis travel
limit 100.0 Value can be positive or negative, but must be more
positive than the Negative Overtravel Limit.
Control checks this parameter only if the Software
Overtravels Used parameter is set to yes.
Overtravels are active only after the axis is homed.
Negative Overtravel
Limit
(Axis) M0:s.10,s.11 –axis travel limit to
Positive Overtravel
Limit –100.0 Value can be positive or negative, but must be more
negative than the Positive Overtravel Limit.
Control checks this parameter only if the Software
Overtravels Used parameter is set to yes.
Overtravels are active only after the axis is homed.
Rollover Position
(Axis) M0:s.12,s.13 0.0 to axis travel limit 0.0 If the axis uses the software overtravels, set this
parameter to zero. Otherwise, the module flags it as
a configuration error.
Home Position –
Position Units
(Homing) M0:s.14,s.15 Negative Overtravel
Limit to Positive
Overtravel Limit 0.0 This parameter allows the Home Position to be
defined as a position other than zero.
Home Calibration
(Homing) M0:s.16,s.17 –axis travel limit to
+axis travel limit 0.0 This parameter is used to fine tune your Home
Calibration. During a homing operation, the axis
moves off the home limit switch in the specified
direction until the limit switch deactivates. The axis
then moves to the home position by moving a
distance equal to the sum of:
Distance to Nearest Encoder Marker +
Home Calibration Value
The distance to the nearest encoder marker is in
Direction to Move Off Limit Switch.
Speed/Direction of
Move Off the Limit
Switch – Position
Units/Time
(Homing) M0:s.18,s.19 –physical limit to
+physical limit 20.0 The Speed/Direction of Move Off the Limit Switch
value is signed. The sign specifies the direction the
axis moves. As a starting point for module
configuration, set the magnitude of the value to 1%
of the Maximum Axis Speed.
Speed/Direction of
Move to the Marker –
Position Units/Time
(Homing) M0:s.20,s.21 –physical limit to
+physical limit 20.0 The Speed/Direction of Move to the Marker value is
signed. Typically, the sign is ignored. However, there
is a special case. The sign specifies the direction the
axis moves due to a unique situation during Homing
to a Limit Switch and Marker. If a marker is not seen
after moving off the limit switch, this parameter
specifies both direction and speed to search for the
marker. As a starting point for module configuration,
set the magnitude of the value to 1% of the
Maximum Axis Speed.
Reversal Error Value –
Position Units
(Axis) M0:s.22,s.23 0.0 to axis travel limit 0.0 This parameter compensates for positioning
inaccuracy caused by mechanical play in the system
when the axis changes direction.
Home the axis to enable the Reversal Error value.
Parameter Name
(Parameter Group) Destination M
File Location
1
Range Default Additional Information