Weidmuller WI-MOD-945-E: 900Mhz Wireless Ethernet & Device Server v2.16 - Manual (Page 42)

Weidmuller Wireless Ethernet Modem & Device Server WI-MOD-945-E User Manual
Page 42 www.weidmuller.com Rev 2.136
Serial Gateway (Modbus - Modbus RTU to TCP)
When configured as “Modbus”, will allow a serial Modbus RTU Client (Master) to connect with a single Ethernet Modbus
TCP Server (Slave)
With the Modbus Function the serial data is encapsulated within a TCP/IP data frame and made available on the Ethernet
network.
Both WI-MOD-945-E serial ports and the hard wired Ethernet port can be configured to communicate completely separate
data streams which can all be communicating at the same time.
Some of the possible Serial Gateway topologies are illustrated below.
There are software packages available (i.e. SerialIP Redirector by Tactical Software) that can create a virtual serial port
on a PC. This virtual serial port can be configured to connect to a WI-MOD-945-E serial port. Standard programs can
then be used to access this serial port as if it were actually connected to the PC. Alternatively HyperTerminal may be used
to connect to a serial port on the WI-MOD-945-E
. When creating the HyperTerminal connection, select “Connect Using:
TCP IP (Winsoc k)”, enter the IP address of the WI-MOD-945-E, and the port selected in the “Network port” field.