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Introduction .................................................................................................................................................. 1-2
Conventions Used ......................................................................................................................................... 1-2
Hardware Overview ...................................................................................................................................... 1-3
Installation .................................................................................................................................................... 1-6
Operation ...................................................................................................................................................... 1-9
Chapter 2: Setup and Operation
Getting Started ............................................................................................................................................. 2-2
Setup Network Connection .......................................................................................................................... 2-3
Setup Modbus Communications Channel ................................................................................................... 2-4
Setup Modbus Devices ................................................................................................................................. 2-6
Configure MQTT Broker ............................................................................................................................. 2-10
Other Options ............................................................................................................................................. 2-14
Recovery Mode ........................................................................................................................................... 2-18
Appendix A: Safety and Security Considerations
Security Considerations for Control Systems Networks..............................................................................A-2
Safety Guidelines ..........................................................................................................................................A-3
Appendix B: Modbus Address Notation – AutomationDirect Devices
Appendix C: MQTT Broker Examples
Introduction ..................................................................................................................................................C-2
Example using Mosquitto .............................................................................................................................C-3
Example using ThingsBoard.io .....................................................................................................................C-7