
Publication GMLC-5.2 - November 1999
Chapter
26
Motion Variables
Motion variables let you use values, such as axis position and velocity as
elements in an expression. All motion variables—except the following—
are read-only. They can be used within an expression, but they cannot be
assigned a value:
PCAM_good_registration_count
PCAM_bad_registration_count
PCAM_missing_registration_count
PCAM_auto_correction_to_go
The available motion variables are shown in the following table:
Variable Units
Servo
Master Only
Virtual
Imaginary
Actual_Position Axis Position Units ✔✔✔
Command_Position Axis Position Units ✔✔
Strobed_Position Axis Position Units ✔ ✔✔✔
Registration_Position Axis Position Units ✔✔✔
Soft_Reg_Pos_Axis Axis Position Units ✔✔✔
Marker_Distance Axis Position Units ✔✔✔
Distance_To_Go Axis Position Units ✔✔
Decel_Distance Axis Position Units ✔✔
Encoder_Filter_Lag Axis Position Units ✔✔
Watch_Position Axis Position Units ✔✔✔✔ ✔
Position_Error Axis Position Units ✔
Average_Velocity Axis Pos. Units/Sec. ✔✔✔
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