User manual

User manual Version 2.3

ABLELink

Ethernet-Serial Server GW21R

3.5 Virtual COM Mode

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

GW21R 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 GW21R that connects

the serial line device to the network. The following figure is Atop Virtual COM connection diagram.

Physical COM1

Physical COM2

COM3

(Virtual COM Port)

COM4

(Virtual COM Port)

COM5

(Virtual COM Port)

COM6

(Virtual COM Port)

OS Driver Level

COM256

(Virtual COM Port)

HUB

TCP/IP Network

Serial Line

Serial Device 1

Serial Line

Serial Device 2

Serial Line

Serial Device 3

Serial Line

Serial Device 4

GW21R

3.5.1Setup of a virtual COM driver

Pre-installation requirements

Please check the operation system on your PC complied with the following requirements:

• Processor: Intel-compatible, Pentium class

• Operation system: Windows Server 2003, Windows XP, Windows 2000, Windows NT 4.0

SP5 or later, Windows Me, Windows 98, Windows 95, Microsoft NT/2000 Terminal Server,

Citrix MetaFrame

• Windows Installer 2.0

• Network: Microsoft TCP/IP networking software

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