OPTO 22 Modular M4RTU, User Manual

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M4RTU/M4 I/O User’s Guide 7
WELCOME
ABOUT THE M4RTU/M4 I/O
Thank you for purchasing an Opto 22 Modular M4RTU or M4 I/O Controller. The M4RTU/M4 I/O delivers the
functionality and robustness of a remote telemetry unit with the power of a distributed automation system, all
in one controller. The M4RTU/M4 I/O consolidates two powerful processors on a single processor board.
Program control and host communications are handled by a powerful 32-bit microprocessor, while another
processor handles I/O interfacing and control. This dual-processor board is combined with a digital/analog
I/O board, a 3-slot vertical expansion bus board (M4BUS), and a modular power supply into a compact aluminum
extrusion package that can be mounted horizontally or vertically. A complete line of modular adapter cards are
available, providing a wide range of communication options.
ABOUT THIS MANUAL
This reference manual provides complete specifications and instructions to set up and install a M4RTU or M4
I/O controller.
In this manual you’ll find:
• Chapter 1: Introduction — General information about the M4RTU/M4 I/O, its possible applications,
basic architecture, and hardware diagrams.
• Chapter 2: Quick Start — A brief explanation of how to quickly get the M4RTU/M4 I/O up and
running.
• Chapter 3: Installation and Setup — Descriptions of jumper settings, communication connections,
and installation procedures.
• Chapter 4: Software and Firmware — General software and firmware overviews and
communication procedures.
• Chapter 5: Field Wiring — Detailed information on digital and analog field wiring, including
examples.
• Appendix A: Troubleshooting — Tips for resolving problems you may encounter.
• Appendix B: Cable and Connector Specifications — A list of recommended communication
cables and connectors.