ABB RMC-100 User Manual page 55

IMPORTANT NOTE: The interface setting for a modem is RS-232 Modem.
Select the appropriate register format if the protocol in the Add/Modify Communication device and
applications window is MODBUS®.
11. Select the Bus Termination checkbox if the RMC is the last device on the RS-422 or RS-485
communication bus.
12. Change the default values for timeouts and delays as needed. Review the communication
equipment specifications before changing the settings.
13. Click Send to send changes to device. The new port name displays under Communication on
the navigation tree.
The four LED lights are PWR, RTS, TXD, and RXD. The LED lights on the top of the communication
module indicate that data is transmitting to (TXD) and received by (RXD) the RMC. The PWR LED light
is on if the RMC is powered on.
Figure 4-13 provides a communication configuration example to connect an ABB Totalflow product,
such as a multivariable transmitter or XMV. The XMV interface application supports this type of
connection.
Figure 4-13: Serial communication port configuration to connect XMVs
Figure 4-14 provides a communication configuration example to connect equipment for remote
communication such as a radio. Generic Com App supports this type of connection.
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