Allen-Bradley 1785 PLC-5 User Manual

Addressing
Reference
Manual
1785 PLC-5

Programmable
Controllers
Allen-Bradley

Allen-Bradley 1785 PLC-5 Specifications

General

Manufacturer	Allen-Bradley
Memory Size	Up to 64K words
Programming Language	Ladder Logic
Series	PLC-5
Communication Ports	DH+

Summary

Important User Information

Summary of Changes

PLC Memory Map Overview

Logical ASCII Addressing Format

I/O Image Table Addressing

PLC Status File Addressing

Data File Addressing Formats

Word of ASCII File

Details the word structure for ASCII data representation.

Word of Binary File

Explains the bit-level structure for binary data representation.

Word of Decimal (BCD) File

Describes the word format for BCD (Binary Coded Decimal) data.

Word of Floating-Point File

Outlines the structure for IEEE floating-point data.

Word of Integer File

Covers the word structure for integer data representation.

Structured Data Addressing

Timer Structure and Mnemonics

Details the structure and mnemonics for timer data.

Counter Structure and Mnemonics

Details the structure and mnemonics for counter data.

Control Structure and Mnemonics

Details the structure and mnemonics for control data.

SFC Status Structure and Mnemonics

Details the structure and mnemonics for SFC status data.

Block-Transfer Control Structure and Mnemonics

Details the structure and mnemonics for block transfer control.

ASCII String Structure and Mnemonics

Details the structure and mnemonics for ASCII string data.

PID Control Structure and Mnemonics

Details the structure and mnemonics for PID control data.