User's Manual

Configuration - Configuring the protocol tunneling
Wireless Field Interface Part No.: Rev01
2 - 24 User’s Manual
For RS-232, select the serial port on which the serial cable is connected as
COM1.
RS-485
The Modbus, HART, and Wireless Field Interface (ENRAF) interfaces supports
RS-485. For RS-485, select the serial port on which the serial cable is
connected as COM2.
Signal Name Pin number
9 pins 25 pins
Protective ground Chassis 1
DCD 1 8
RXD 2 3
TXD 3 2
DTR 4 20
Signal ground 5 7
DSR 6 6
RTS 7 4
CTS 8 5
Signal Name Pin number
9 pins
Protective ground Chassis
RXA 2
RXB 8
TXA 3
TXB 7
Signal ground 5