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Manual Contents

Table of Contents

Revision History

Important Safety Information

Chapters
Chapter 1	Introduction tells you about the Data Communication Module and its uses. It lists other manuals you may need and tells you how to get additional technical assistance, if necessary.
Chapter 2	Build the Cable guides you through building the necessary communication cable, covering physical and electrical specifications.
Chapter 3	Set the DCM Switches guides you through the setup of the rotary and DIP switches to select communication parameters and network addressing. It shows the proper method of inserting the module into the base.
Chapter 4	Install the DCM and Start the Network tells you what to consider when laying out your network cable and how to terminate the individual conductors at the networked devices. It gives you specific cabling examples, showing pinouts for each device.
Chapter 5	Verify and Troubleshoot introduces the use of the DCM's status indicator lights as a diagnostic tool. It gives you status indicator light patterns to help you identify problems that could be preventing communications.

Appendices
Appendix A	Cable Diagrams gives pinouts and cable options.
Appendix B	RLL Communications Programs provides helpful examples of Ladder Logic programs for DCM communications.
Appendix C	Using the DCM with MODBUS describes the methods for communicating using the popular MODBUS RTU protocol.
Appendix D	Using the DCM with Modems explains communications using telephone, radio or fiber optic modems.