User Manual Owner manual

Rockwell Automation Publication 2080-UM005A-EN-E - December 2013 37

Chapter

Communication Connections

Overview

This chapter describes how to communicate with your control system and

configure communication settings. The method you use and cabling required to

connect your controller depends on what type of system you are employing. This

chapter also describes how the controller establishes communication with the

appropriate network. Topics include:

The Micro820 controllers have the following embedded communication

channels:

• a non-isolated RS232/RS485 combo port

• RJ45 Ethernet port

Supported Communication

Protocols

Micro820 controllers support the following communication protocols through

the embedded RS232/RS485 serial port as well as any installed serial port plug-in

modules:

• Modbus RTU Master and Slave

• CIP Serial Client/Server (RS232 only)

• ASCII

In addition, the embedded Ethernet communication channel allows your

Micro820 controller to be connected to a local area network for various devices

providing 10 Mbps/100 Mbps transfer rate. Micro820 controllers support the

following Ethernet protocols:

• EtherNet/IP Client/Server

• Modbus/TCP Client/Server

• DHCP Client

Modbus RTU

Modbus is a half-duplex, master-slave communications protocol. The Modbus

network master reads and writes bits and registers. Modbus protocol allows a

Topic Page

Supported Communication Protocols 37

Use Modems with Micro800 Controllers 41

Configure Serial Port 42

Configure Ethernet Settings 48