It is all in the Javascript. What it does is to use the /HOSTLINK/xxx command and Ajax to retrieve the data from the PLC. After that it is displayed on the browser. You can specify some of the text field as non editable so that they can only display and not changed.
We do have a Javascript webpage designed for FMD PLC which supports 8 DI, 8 DO and 8 DMs (all editable).
If you would like to receive the script you can write to support@triplc.com with the following info:
1) Your name and/or company name that purchase the products
2) If you have purchased the product from a distributor, please provide the name of the distributor.
3) Optional: some description of your project will be nice!