Introduction; Who Should Use This Manual; Purpose Of This Manual - Allen-Bradley Logix5000 Reference Manual

Introduction

Who Should Use This
Manual

Purpose of This Manual

Table 1 - Description of Instruction Format
Section
Instruction name
Operands
Instruction structure
Description
Arithmetic status flags
This manual provides a programmer with details about each available instruction
for a Logix-based controller.
You should be familiar with how the Logix-based controller stores and processes
data.
Novice programmers should read all of the details about an instruction before
using the instruction. Experienced programmers can refer to the instruction
information to verify details.
This manual is one of a set of related manuals that shows common procedures for
programming and operating Logix5000 controllers. For a complete list of
common procedures manuals, see the Logix5000 Controllers Common
Procedures Programming Manual, publication 1756-PM001.
The term Logix5000 controller refers to any controller that is based on the
Logix5000 operating system, such as:
· CompactLogix controllers
· ControlLogix controllers
· DriveLogix controllers
· FlexLogix controllers
· SoftLogix5800 controllers
Information
Identifies the instruction.
Defines whether the instruction is an input or an output instruction.
Lists all the operands of the instruction.
If available in relay ladder, describes the operands.
If available in structured text, describes the operands.
If available in function block, describes the operands.
The pins shown on a default function block are only the default pins. The operands table
lists all the possible pins for a function block.
Lists control status bits and values, if any, of the instruction,
Describes the instruction's use.
Defines any differences when the instruction is enabled and disabled, if appropriate.
Defines whether or not the instruction affects arithmetic status flags.
Rockwell Automation Publication 1756-RM003N-EN-P - October 2011
Preface
37