ABB RMC-100 User Manual page 34

Figure 3-3: COMM terminals and modules
3.5.4.1 Wire remote communications equipment (radio)
The controller serial communication (COMM) ports can be wired with remote communication
equipment, such as a radio.
COMM ports. In this example, the COMM port is configured as an RS-232 port, which provides point-
to-point communication.
Figure 3-4: Serial communication with radio equipment
3.5.4.2 Wire multiple peripheral measurement devices
The controller serial communication (serial communication, COMM) ports can connect to peripheral
measurement devices, such as multivariable transmitters.
one of the COMM ports and two multivariable transmitters. In this example, the COMM port is
configured as an RS-485 port, which provides either point-to-point or multi-point communication. The
example shows the two connected transmitters that connect to the controller for communication and
power.
3 4 | R MC-1 00 | 2 10 55 5 2MN A E
Figure 3-4 shows the connection between radio equipment and one of the
RS-232
Radio
equipment
Tx
Rx
Figure 3-5 shows the connection between