Rockwell Automation 1794-Lxxxx PhaseManager - Manual (Page 97)

Publication LOGIX-UM001B-EN-P - April 2010 97
Equipment Phase Instructions (PSC, PCMD, POVR, PFL, PCLF, PXRQ, PRNP, PPD, PATT, PDET) Appendix A
Attach to Equipment Phase
(PATT) Use the PATT instruction to take ownership of an equipment phase to either:
• prevent another program or FactoryTalk Batch software from
commanding an equipment phase.
• make sure another program or FactoryTalk Batch software does not
already own an equipment phase.
Operands:
Relay Ladder
Structured Text
The operands are the same as those for the relay ladder PATT instruction.
Description: The PATT instruction lets a program take ownership of an equipment phase.
• Ownership is optional. As long as an equipment phase has no owners,
any sequencer (program in the controller, FactoryTalk Batch software)
can command an equipment phase.
• FactoryTalk Batch software always takes ownership of an equipment
phase.
• Once a sequencer owns an equipment phase, no other sequencer can
command the equipment phase.
Operand Type Format Description
Phase Name phase name of the
equipment
phase Equipment phase that you want to own
Result DINT immediate
tag To let the instruction return a code for its
success/failure, enter a DINT tag in which to
store the result code.
Otherwise, enter 0.