13
2.3.2 Connector COM1[RS485] COM2[RS232]
The 9 Pin, Female, SUB-D, COM1 [RS-485] & COM2 [RS-232] Port on the
back of the unit is the programming port (PC Connector) and RS485/422
communications port for connecting to a controller.
Pin Designations
COM1 [RS-485] &
COM2 [RS-232]
Pin assignment of the 9 Pin, Male, SUB-D COM1
[RS-485] &COM2 [RS-232] Port
Pin#
Symbol
Function RS485 4
wire
Function RS485 2
wire
1
Rx-
RS485 Receive
RS485 Data-
2
Rx+
RS485 Receive
RS485 Data+
3 Tx-
RS485
Transmit
4 Tx+
RS485
Transmit
5 GND
Signal
Ground
6 Not
used
7 TxD
RS232
Transmit
8 RxD
RS232
Receive
9 Not
used
MT600
COM1 [RS-485]
9P D-SUB Male
RS-485 2 wire Device
1 Data-
Data-
2 Data+
Data+
5 GND
MT600
COM1 [RS-485]
9P D-SUB Male
RS-485 4 wire Device
1 Rx-
Rx- RS485
Receive
2 Rx+
Rx+
RS485 Receive
3 Tx-
Tx- RS485
Transmit
4 Tx+
Tx+
RS485 Transmit
5 GND
MT600
COM2 [RS-232]
9P D-SUB Male
RS232 device
5 GND
5 GND
7 TxD
2 RxD
8 RxD
3 TxD
2.3.4 Dip Switch