User Documentation

2
1. Overview
The Modbus gateways IE-GW-MB-2TX-1RS232/485 and IE-GWT-MB-
2TX-1RS232/485 (equipped with 1 serial port and 2 Ethernet ports)
convert between Ethernet-based Modbus TCP and serial-based
Modbus ASCII/RTU protocols. They can be used to allow Ethernet
masters to control serial slaves, or to allow a serial master to control
Ethernet slaves. Up to 16 TCP masters and 31 serial slaves can be
connected simultaneously.
2. Package Checklist
Before installing the Modbus TCP/RTU Gateway, verify that the
package contains the following items:
1 Modbus TCP/RTU Gateway
1 Hardware Installation Guide
If any of these items are missing or damaged, please contact your
Weidmüller customer service for assistance.
3. Hardware Description
LED Indicators
Name
Color
Function
PWR1
Red
Power is being supplied to the power input
PWR2
Red
Power is being supplied to the power input
RDY
Red
Steady: Power is on and the unit is booting up
Blinking: IP conflict, DHCP or BOOTP server
did not respond properly, or a relay output
occurred
Green
Steady: Power is on and the unit is functioning
normally
Blinking: Unit is responding to Locate function
Off
Power is off or power error condition exists
Ethernet
1 / 2
Orange
10 Mbps Ethernet connection
Green
100 Mbps Ethernet connection
Off
Ethernet cable is disconnected
P1
Orange
Serial port is receiving data
Green
Serial port is transmitting data
Off
Serial port is not transmitting or receiving data
Interfaces
1 Connector for dual input power and relay output
2 Ethernet Ports 10/100BaseT(X)
1 Terminal block for connecting serial Modbus devices with
RS422/RS485 interface or alternatively useable
1 Serial DB9 port (male) for connecting serial Modbus devices with
RS232 interface
Note: The serial ports may only be used alternatively, either the
RS232-DB9 or the RS422/485 connector can be used at one
time.