User`s manual

MGate MB3000 User’s Manual Hardware: MB3180
3-5
Pin Assignments
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).
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 --- ---
DIN-Rail, Wall Mounting
Mounting on a DIN-rail: Attach the DIN-rail accessories and latch the unit onto the DIN-rail as
shown. The DIN-rail kit is ordered separately.
⇒
Mounting on the wall: Place two screws in the wall and slide the unit onto the screws as shown. The
head of each screw 6.5 mm or less in diameter, and the shaft should be 3 mm or less in diameter.
Make sure to leave about 2 mm of space between the head and the wall.
7.8 cm
6.5 mm