[NT20 touchscreen broken]

I had success to upload from an NT20S with the dos program ntss233 but before i had to set in ntss the pt type = NT20M (Edit screen > F4).

Once uploaded i had to rebuild from scratch the project in the nb designer. But once done the negative values doesnt got displayed because all the variables used special bcd format allowing negative numbers that the new nb hmi no more support. So i had also to modify the plc program to convert the special long bcd format in normal dword format for all the variables with possibly negative values.

[number of the active page in nb designer]

You have to add a new entry in the "Project Database" > "Plc Control" table
inserting the desired area and address of the plc variable
and then selecting the function mode = "Write data (current base screen number) into plc"