Moxa Technologies MGate MB3000 Modbus Manual de usuario Pagina 75

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MGate MB3000 User’s Manual Pin Assignments
10-2
DB9 (Male)
The MGate MB3000 uses DB9 (male) serial ports to connect Modbus RTU or ASCII devices. Each
port supports three serial interfaces: RS-232, RS-422, and RS-485 (both 2 and 4-wire).
15
69
Pin RS-232
RS-422
RS-485 (4W)
RS-485 (2W)
1 DCD TxD- ---
2 RxD TxD+ ---
3 TxD RxD+ Data+
4 DTR RxD- Data-
5 GND GND GND
6 DSR --- ---
7 RTS --- ---
8 CTS --- ---
MB3170, MB3170I
Pin RS-232
1 DCD
2 RxD
3 TxD
4 DTR
5 GND
6 DSR
7 RTS
8 CTS
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