ABB RMC-100, User Manual

Page: 34 / 215

34 | RMC-100| 2105552MNAE
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. Figure 3-4 shows the connection between radio equipment and one of the
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. Figure 3-5 shows the connection between
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.
RS-232
Tx
Rx
Radio
equipment