Westermo EDW-100 Betriebsanweisung PDF herunterladen (Seite 26)

6616-2202

Point to point using UDP connection

Communication one to many using TCP

Description

In a point to point application the EDW-100 can be to replace or extend a cable link.

The distance between the EDW-100 units is only limited by the size of the LAN.

Data can be sent across the network using ether UDP or TCP. A typical application

would be a SCADA or Data logging application interrogating a sensor or PLC.

To understand the differences between a UDP and TCP please see page 16–17.

IP address:port = Com X

IP address:port = Com Y

IP address:port = Com Z

Virtual IP

Description

Many legacy software applications do not have any facilities to directly use Ethernet but there is

a requirement to use a newly installed or existing LAN to communication to many serial devices.

This problem is solved by installing a serial port redirection software on the host PC. The redirec-

tion software works by creating virtual serial ports on the computer. The Virtual serial port can be

selected and use in the same way as a hardware based port. The serial redirection software will

encapsulate the serial data in a TCP/IP and send it to the relevant EDW-100 device. The EDW-100

will then strip off the TCP/IP frame and just forward the serial data to the target device. In th e

reverse direction the EDW-100 will encapsulate the data and the serial redirection software will

strip off the TCP/IP frame. The serial redirection software can create up to 255 serial comms ports

on a single computer.

Network

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Westermo EDW-100 Betriebsanweisung Seite 26