Allen-Bradley 1756 ControlLogix - Page 237

Motion Event Instructions
Chapter 4
Rockwell Automation Publication MOTION-RM002H-EN-P-February 2018 237
Operands
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_CIP_DRIVE
AXIS_GENERIC
AXIS_GENERIC_DRIVE
AXIS_SERVO
AXIS_SERVO_DRIVE
Tag Name of the axis to perform
operation on
Motion Control MOTION_INSTRUCTION MOTION_INSTRUCTION Tag Structure used to access
instruction status parameters.
Trigger
Condition
BOOLEAN BOOLEAN Immediate Select the watch-event trigger
condition:
0 = forward – the servo module
looks for the actual position to
change from less than the watch
position to greater than the
watch position.
1 = reverse – the servo module
looks for the actual position to
change from greater than the
watch position to less than the
watch position.
Position REAL REAL Immediate or Tag The new value for the watch
position.
See Structured Text Syntax for more information on the syntax of expressions
within structured text.
For the operands that require you to select from available options, enter your
selection as:
This Operand Has These Options Which You
Enter as Text Or Enter as a
Number
TriggerCondition forward
reverse
0
1