Equipment Phase Instructions
Rockwell Automation Publication 1756-RM006K-EN-P - November 2018 419
Execution
For Structured Text, EnableIn is always true during normal scan. Therefore, if the
instruction is in the control path activated by the logic, it will execute. All
Conditions below the thick solid line can only occur during Normal Scan mode.
Condition/State Action Taken
Prescan No action taken.
Postscan No action taken.
EnableIn is false No action taken.
EnableIn is true The instruction executes as described above.
Example
Ladder Diagram
If Step.1 = 1 (first step in the sequence) then
Each PATT instruction tries to take ownership of an equipment phase.
If the Result of a PATT instruction = 0 or 24582 (the program owns
the equipment phase), then
A bit within the Ownership tag = 1. (In the Ownership tag, each
equipment phase is assigned a bit.)
If Ownership = 3 (The program owns both equipment phases as shown by
bits 0 and 1), then
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