User's Manual

User manual Version 1.2

ABLELink

Ethernet-Serial Server

GW21W-MAXI

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4.5 Virtual COM Mode

Virtual COM driver mode for windows converts COM data to LAN data to control the RS-232C port on a

GW21W-MAXI via the LAN. By creating virtual COM ports on the PC, Atop virtual COM redirects the

communications from the virtual COM ports to an IP address and port number on a GW21W-MAXI that

connects the serial line device to the network. The following figure is Atop virtual COM connection

diagram.

4.5.1 Setup of a virtual COM driver

Correspondence OS

Atop virtual COM driver can be used on Windows 95, Windows 98, Windows 98 Second Edition, and

Windows Millennium Edition.

Cautions on Use

1. Support firmware AP v3.0 and above of ABLELink Ethernet-Serial Servers.

2. When you change the IP address of one of the 2 virtual COM ports, delete the one just being

modified, then add the deleted port again, this will cause the host PC to break down(blue

screen).

Limitation

Currently Atop virtual COM only acts as TCP client

Installation

Make sure you have turned off all anti-virus software before beginning the installation. Run

Setup.exe program included in the CD to install Atop virtual COM for your operating system.

Uninstalling

1. From Windows Start menu select Setting, Control Panel, Add/Remove Programs.

2. Select virtual COM Port and press the Add/Remove button to remove the program, or From