After you have Hardwired your Installation, you must program the controller and the PC to communicate 

FROM THE CONTROLLER
SystemSetup>Communication Setup>MODBUS
 
In Modbus settings
·        Modbus communication:  Remote or Broadcast
·        Modbus address:  1 – 242 if you have more than one controller use different numbers
·        Network Name:  make sure controller has a unique name (not Zone #1)
 
FROM THE PC
1st install the Software on the PC you want to utilize it from
 
Here is the Link to download your Software – LinkConn 100, as well as attachments that will provide a visual understanding on how to hardwire your Equipment to PC.
 
LinkComm 100 download
ftp://file.link4corp.com/software-download/LinkConn_100_v1.6.0.0.zip
 
Driver for USB to Serial Cable
http://www.ftdichip.com/FTDrivers.htm
 

This link will show you how to install the driver from device manager
http://www.sevenforums.com/tutorials/97061-driver-install-device-manager.html
 
 
Next

• Go to device Manager and get the Port number for your USB to SERIAL Adapter
• You will need this to input into your iControl settingsThe iControl communication port must match the  USB to Serial Adapter Port assignment in DEVICE MANAGER