Rockwell Automation Publication 2080-UM002L-EN-E - November 2021 59
Chapter 5 Communication Connections
For information on Modbus mapping, see Modbus Mapping for Micro800 on
page 211.
To configure the serial port as Modbus RTU, see Configure Modbus RTU
on
page 65.
CIP Serial Client/Server – RS-232 Only
CIP Serial Client/Server allows CIP protocol to be used over an RS-232 serial
port. It is typically used with modems. The advantage over non-CIP serial
protocols is that since the protocol is CIP, program downloads are supported
including CIP pass-through from the serial port to Ethernet.
ASCII
ASCII provides connection to other ASCII devices, such as bar code readers,
weigh scales, serial printers, and other intelligent devices. You can use ASCII
by configuring the embedded or any plug-in serial RS-232/RS-485 port for the
ASCII driver. See the Connected Components Workbench Online Help for
more information.
To configure the serial port for ASCII, see Configure ASCII
on page 67.
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.
No protocol configuration is required other than configuring the Modbus
mapping table. For information on Modbus mapping, see Modbus Mapping
for Micro800 on page 211.
Use MSG_MODBUS instruction to send Modbus messages over serial port.
Use MSG_MODBUS2 instruction to send Modbus TCP message over Ethernet
port.
To Next Page
Loading...
Need help?
General
