Detach From Equipment Phase (Pdet) - Allen-Bradley LOGIX 5000 Reference Manual

Equipment Phase Instructions
Detach from Equipment
Phase (PDET)
Structured Text
Number
See also
Equipment Phase Instructions
Index Through Arrays
This instruction applies to the CompactLogix 5370 and CompactLogix 5380,
ControlLogix 5570 and ControlLogix 5580, and Compact GuardLogix 5370 and
Compact GuardLogix 5380 controllers.
Use the PDET instruction to relinquish ownership of an equipment phase.
After a program executes a PDET instruction, the program no longer owns the
equipment phase. This frees the equipment phase for ownership by another
program or by FactoryTalk Batch software. Use the PDET instruction only if the
Rockwell Automation Publication 1756-RM006K-EN-P - November 2018
Description
At the first step in the sequence, the Take_Ownership action tries to take
ownership of two equipment phases that the sequence uses.
Action_009 checks that the program owns the equipment phases. If the
Result of each PATT instruction = 0 or 24282 (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 the Ownership = 3 (The program owns both equipment phases as shown
by bits 0 and 1.), then the SFC goes to the next step.
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Chapter 7
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