Rockwell Automation Publication MOTION-RM002H-EN-P-February 2018 139
Operands
There are data conversion rules for mixed data types within an instruction. See
Data Conversion.
Ladder Diagram and Structured Text
Operand Type
CompactLogix 5380, CompactLogix
5480, ControlLogix 5580, Compact
GuardLogix 5380, and GuardLogix
5580 controllers
Type
CompactLogix 5370, ControlLogix
5570, Compact GuardLogix 5370,
and GuardLogix 5570 controllers
Format Description
Axis AXIS_CIP_DRIVE
AXIS_VIRTUAL
AXIS_CIP_DRIVE
AXIS_VIRTUAL
AXIS_GENERIC
AXIS_SERVO
AXIS_SERVO_DRIVE
AXIS_GENERIC_DRIVE
Tag Name of the axis to perform
operation on.
Motion Control MOTION_INSTRUCTION MOTION_INSTRUCTION Tag Structure used to access instruction
status parameters.
Motion Type UDINT UDINT Immediate Motion profile (jog or move) to
change. Select either:
0 = jog
1 = move
Change Speed BOOLEAN BOOLEAN Immediate Set to enable a change of speed.
Select either:
0 = no
1 = yes
Speed REAL REAL Immediate or
Tag
The new Speed to move the axis in
% or Speed Units.
Change Accel BOOLEAN BOOLEAN Immediate Set to enable an acceleration
change. Select either:
0 = no
1 = yes
Accel Rate REAL REAL Immediate or
Tag
The acceleration rate of the axis in
% or Acceleration units.
Change Decel BOOLEAN BOOLEAN Immediate Set to enable a deceleration
change. Select either:
0 = no
1 = yes
Decel Rate REAL REAL Immediate or
Tag
The deceleration rate of the axis in
% or Deceleration units.
The axis could overshoot its target
position if you reduce the
deceleration while a move is in
process.
Change Accel Jerk SINT, INT, or DINT SINT, INT, or DINT Immediate 0 = No
1 = Yes
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