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MGate EIP3000 Series User’s Manual Hardware: EIP3270, EIP3270I
Pin Assignments
DB9 (Male)
The MGate EIP3000 uses DB9 (male) serial ports to connect Modbus RTU or ASCII devices. Each
port supports two serial interfaces: RS-232 and RS-422.
15
69
Pin RS-232 RS-422
1 DCD TxD-
2 RxD TxD+
3 TxD RxD+
4 DTR RxD-
5 GND GND
6 DSR ---
7 RTS ---
8 CTS ---
Power Input, Relay Output
V2+ V2-
V1+ V1-
Shielded
Ground
DC Power
Input 1
DC Power
Input 1
Relay
Output
Relay
Output
DC Power
Input 2
DC Power
Input 2
4-5