
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.
1
5
6
9
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
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