Attach to equipment phase (patt) – Rockwell Automation 1794-Lxxxx PhaseManager User 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.