Rockwell Automation Publication MOTION-RM002H-EN-P-February 2018 135
Execution
Ladder Diagram
Condition/State Action Taken
Prescan The .EN, .DN, .ER, and .IP bits are cleared to false.
Rung-condition-in is false The .EN bit is cleared to false if either the .DN or .ER bit is true.
Rung-condition-in is true The .EN bit is set to true and the instruction executes.
Postscan N/A
Structured Text
Condition/State Action Taken
Prescan See Prescan in Ladder Diagram table
Normal execution See Rung-condition-in is false, followed by rung is true in the Ladder Diagram
table.
Postscan See Postscan in Ladder Diagram table.
Examples
Example 1
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