Alternatively, you can purchase the ExcelLink software to run on your lap top which allows you to change data inside the PLC by entering data into an Excel spreadsheet.
If you use our PLCs with built-in Ethernet such as the Nano-10 and F-series PLCs, you can just use a browser to enter hostlink commands to change the variable:
E.g.
http://192.168.1.5:9080/HOSTLINK/WVD00011234which will enter a Hexadecimal number 1234 (Dec 4660) into DM location #1.
Better still, you could use an Excel spreadsheet and write a macro to read/write data directly to the PLC (no ExcelLink software required in this case) using the hostlink command.