Allen-Bradley PLC-5 Quick Reference

About this manual

This document serves as a quick reference guide for the Allen-Bradley PLC-5 family of programmable controllers. It provides essential information frequently needed for using and maintaining these processors, intended strictly for reference purposes rather than as a comprehensive source of information.

The guide covers a wide range of topics including hardware components across various processor models (Classic, Enhanced, Ethernet, and ControlNet), addressing instructions, status bits, troubleshooting procedures, and communication protocols such as DH+, ControlNet, and Ethernet.

What's inside

• Hardware Components
• Processor Comparison
• I/O Chassis
• Addressing Instructions
• Status Bits
• Communication Protocols
• Troubleshooting

Frequently asked questions

What is the maximum number of simultaneously active MSG instructions allowed?

The maximum number of simultaneously active MSG instructions is always less than or equal to 32.

What is the maximum number of simultaneously active 1794 and CIP CIO instructions?

The maximum number of simultaneously active 1794 and CIP CIO instructions is always less than or equal to 8.

What is the maximum number of simultaneously open target Message Router connections?

The maximum number of simultaneously open target Message Router connections is always less than or equal to 32.