Rockwell Automation 2080-LC20-20QBBR Micro820 20-point Programmable Controllers User Manual - Manual (Page 45)

Rockwell Automation Publication 2080-UM005A-EN-E - December 2013
37
Chapter
5
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