Rockwell Automation 1784-PM16SE SoftLogix Motion Card Setup and Configuration Manual - Manual (Page 352)

Publication 1784-UM003A-EN-P – June 2003
344 Motion Object Attributes
Test Increment The Motor Feedback Test Increment attribute is used in conjunction with the
MRHD (Motion Run Hookup Diagnostic) instruction to determine the
amount of motion that is necessary to satisfy the MRHD initiated test process.
This value is typically set to approximately a quarter of a revolution of the
motor.
Tuning Travel Limit The Tuning Travel Limit attribute is used in conjunction with the MRAT
(Motion Run Axis Tuning) instruction to limit the excursion of the axis during
the test. If, while performing the tuning motion profile, the servo module
determines that the axis will not be able to complete the tuning process before
exceeding the Tuning Travel Limit, the servo module will terminate the tuning
profile and report that the Tuning Travel Limit was exceeded via the Tune
Status attribute. This does not mean that the Tuning Travel Limit was actually
exceeded, but that had the tuning process gone to completion that the limit
would have been exceeded.
Tuning Speed The Tuning Speed attribute value determines the maximum speed of the
MRAT (Motion Run Axis Tune) initiated tuning motion profile. This attribute
should be set to the desired maximum operating speed of the motor prior to
running the MRAT instruction. The reason for doing this is that the tuning
procedure will measure maximum acceleration and deceleration rates based on
ramps to and from the Tuning Speed. Thus, the accuracy of the measured
acceleration and deceleration capability is reduced by tuning at a speed other
than the desired operating speed of the system.
GSV/SSV Access Attribute Name Data Type Values
SSV/GSV Test Increment REAL Position Units
GSV/SSV Access Attribute Name Data Type Values
SSV/GSV Tuning Travel Limit REAL Position Units
GSV/SSV Access Attribute Name Data Type Values
SSV/GSV Tuning Speed REAL
Position Units / Sec