Moxa MGATE MB3180 Manual de usuario Pagina 35

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MGate MB3000 User’s Manual Hardware: MB3170, MB3170I
6-5
Pin Assignments
DB9 (Male)
The MGate MB3170 and MB3170I use a DB9 (male) serial port for RS-232 connections to Modbus
RTU or ASCII devices.
Pin RS-232
1
2
3
4
5
6
7
8
Terminal Block (RS-422, RS-485)
The MGate MB3170 and MB3170I use a terminal block connector for RS-422 and RS-485
connections to Modbus RTU or ASCII devices.
Pin
RS-422
RS-485 (4W)
RS-485 (2W)
1
TxD+
---
2
TxD-
---
3
RxD+
Data+
4
RxD-
Data-
5
GND
GND
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