Can anyone help me as i'm teaching myself to program plc's. I can use syswin3.4 OK and am now in need of learning how to write a program that uses one of these HMI's. If anyone has a short program i could use ie: just one that has a start stop circuit and a counter/timer I would be very grateful.
Many Thanks

Ca-Technic

Which NT software do you have?

I have NT Shell

Which version NT Support tool?
Do you have the NT20S operation manual? And NTST manual? If not I can post them for you.
They contain a lot information on all functions. I can post a NT20 program, but I think to see a complete application at once will be a bit confusing.
If you just start by creating a new program, an empty screen, and as you say start with some buttons and lights and post your progress we can help you if you have any questions.

*edit: I just realise I might understand you wrong, are you asking for a sample PLC or HMI program?
The PLC program isn't really that different when using an HMI like NT20S, basically it only needs one differentiated move instruction to set the screen to the startup screen number. For the rest the screen accesses the various memory areas in the PLC to display values and bit status.