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2.3.2 Connecter 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.
Connection
This port can be attached to a Computer via a special DB9 Female to DB9
Female cable provided with the unit. (P/N: MT5_PC)
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
1 Rx- RS485
Receive
2 Rx+ RS485
Receive
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
NP-600S RS485 RS232
COM 1 [RS485]
COM 2 [RS232]
1
2
3
4
5
6
7
8
9
1
2
3
4
5
6
7
8
9
R x - 1
Rx+ 2
Tx- 3
Tx+ 4
GND 5
6
TxD 7
RxD 8
9
NP-600S to PC
MT5_PC Cable
Configuration
