Introduction, Appendix a, Set and clear – Rockwell Automation 1794-Lxxxx PhaseManager User Manual

Page 55: Equipment phase instructions, Appendix

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Publication LOGIX-UM001B-EN-P - April 2010

55

Appendix

A

Equipment Phase Instructions

(PSC, PCMD, POVR, PFL, PCLF, PXRQ, PRNP, PPD, PATT, PDET)

Introduction

This appendix provides a description of each equipment phase instruction in
this format.

Set and Clear

This manual uses set and clear to define the status of bits (booleans) and
values (non-booleans).

If an operand or parameter support more than one data type, the bold data
types indicate optimal data types. An instruction executes faster and requires
less memory if all the operands of the instruction use the same optimal data
type, typically DINT or REAL.

This section

Provides this type of information

Instruction name

identifies the instruction

Operands

lists all the operands of the instruction

Instruction structure

lists control status bits and values, if any, of the instruction

Description

describes the instruction’s use

defines any differences when the instruction is enabled and disabled, if appropriate

Arithmetic status flags

defines whether or not the instruction affects arithmetic status flags

Fault conditions

defines whether or not the instruction generates minor or major faults

if so, defines the fault type and code

Execution

defines the specifics of how the instruction operates

Example

provides at least one programming example in each available programming language

includes a description explaining each example

This term

Means

set

the bit is set to 1 (ON)

a value is set to any non-zero number

clear

the bit is cleared to 0 (OFF)

all the bits in a value are cleared to 0

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