Delta RMC151 - Manual (Page 552)

RMC70/150 and RMCTools User Manual
The RMC150 does not support serial RS-232 or RS-485. However, the RMC150E can
communicate to serial RS-232/485 devices via serial-to-Ethernet converters, available from
manufacturers such as Lantronix (UDS100-IAP) or Allen-Bradley (1761-NET-ENI). Contact
Delta for more information.
The RMC75S has two communication ports, which can be used simultaneously:
• Monitor Port (Port 0)
The RMC75S Monitor Port (port 0) is intended to be used for communication with
RMCTools, but may also be used with other devices. This port supports only RS-232 at
fixed settings. For details, see the Monitor Port topic.
Notice that the RMC75P also has a serial RS-232 serial Monitor port.
• Port 1
Port 1 on the RMC75S module is intended to be used for communication with devices
such as PLCs and HMIs. Port 1 supports either RS-232 and RS-485 (2-wire only). See
the Configuring Serial Communications topic for instructions on how to configure port
1.
For basics on using serial communications, such as reading and writing registers and issuing
commands, see the Using Serial Communications topic.
Features
The RMC75S serial port 1 has a great amount of flexibility, as summarized below:
• Protocols:
o Allen-Bradley DF1 (Full- and Half-duplex)
o Modbus/RTU
o Mitsubishi Bidirectional Protocol
• Baud Rate: 9,600 to 115,200
• Parity: Odd, Even, or None
• Line Drivers: RS-232 and RS-485
• Termination and Biasing (RS-485 only): Both jumper-selectable on the connector
Setup
Because of the large number of options offered by the RMC70, setting it up can be
intimidating to users new to serial communications. Read each of the following topics
carefully before designing your serial network:
Configuring the RMC7xS Serial Communications
Line Drivers: RS-232/485
Serial Network Topologies
RS-232 Wiring for the RMC70
RS-485 Wiring for the RMC70
RS-485 Termination and Biasing
Protocols
The following topics describe how to use each protocol supported by the RMC75S:
DF1 (Full- and Half-Duplex)
Modbus/RTU
Mitsubishi Bidirectional Protocol
Using Serial Communications
See the Using Serial Communications topic.
532 Delta Computer Systems, Inc.