Westermo EDW-100 - Manual (Page 10)

10 6616-2203
Introduction
The EDW-100 is an Industrial Ethernet to serial adapter or Ethernet Terminal Server. The
serial interface is selectable between RS-232 and RS-422/485. The Ethernet interface is
10/100BASE-T and supports the following networking protocols: TCP, UDP, ICMP, IGMP,
HTTP, ARP.
Two EDW-100 can be used to provide a serial point to point link over an Ethernet
network using either UDP or TCP. When using TCP the EDW-100 can be configured as
client or server.
In addition to a transparent serial point-to-point link and ethernet to serial adapter, the
EDW-100 MG can also be configured to act as a Modbus gateway.
Each unit passes data
from its serial interface
to the serial interface
of the other unit. This
enables long distance serial
communication using pre-
existing networks.
When EDW-100 is used
with the UDP protocol
it is also possible to
communicate one to many
(e.g. master to multiple
slaves), by using a broadcast
address or multicast
addressing
Network
Serial
Device Configured
as UDP- or
TCP-server
Configured
as UDP- or
TCP-client
Serial
Device
Serial
Master
Serial
Slave
Serial
Slave
Serial
Slave
Network
Broadcast
Multicast
EDW-100 can also provide a remote serial interface
for a computer connected through a TCP/IP network
using a comport redirection software.
A COM port redirector or customer written
software can be used to create virtual COM ports.
This software will redirect data, originally sent to a
local COM port, to the remote serial interface of the
EDW-100. No changes are required on the computer
application software.
Application software
Data to / from COM3
Data to / from COM4
Data to / from COM5
Data to / from COM255
COM port
redirector software
Network
COM3
COM4
COM5
COM255
Netw
ork
Interface