Allen-Bradley 2080-LC20-20QBB User Manual page 70

Chapter 5 Communication Connections
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Modbus TCP Client/Server
The Modbus TCP Client/Server communication protocol uses the same
Modbus mapping features as Modbus RTU, but instead of the Serial port, it is
supported over Ethernet. Modbus TCP Server takes on Modbus Slave features on
Ethernet.
The Micro820 controller supports up to 16 simultaneous Modbus TCP Client
connections and 24 simultaneous Modbus TCP Server connections.
No protocol configuration is required other than configuring the Modbus
mapping table. For information on Modbus mapping, see
Micro800 on page 189.
Use MSG_MODBUS2 instruction to send Modbus TCP message over
TIP
Ethernet port.
CIP Symbolic Client/Server
CIP Symbolic is supported by any CIP compliant interface including Ethernet
(EtherNet/IP) and Serial Port (CIP Serial). This protocol allows HMIs to easily
connect to the Micro820 controller.
CIP Serial, supported on the Micro820 controller, makes use of DF1 Full Duplex
protocol, which provides point-to-point connection between two devices.
The Micro800 controllers support the protocol through RS232 connection to
external devices, such as computers running RSLinx Classic software, PanelView
Component terminals (firmware revisions 1.70 and above), PanelView 800
terminals or other controllers that support CIP Serial over DF1 Full-Duplex,
such as ControlLogix and CompactLogix controllers that have embedded serial
ports.
EtherNet/IP, supported on the Micro820 controller, makes use of the standard
Ethernet TCP/IP protocol.
The Micro820 controller supports up to 16 simultaneous EtherNet/IP Client
connections and 24 simultaneous EtherNet/IP Server connections.
To configure CIP Serial, see
To configure for EtherNet/IP, see
Configure CIP Serial Driver on page
Configure Ethernet Settings on page
Rockwell Automation Publication 2080-UM005E-EN-E - March 2018
Modbus Mapping for
65.
70.