Could I draw like this?

DB 15 (OP side)  DB9(PC side)
3------------------------------->3
4------------------------------->2
12------------------------------>5

plus in PC side 1 to 6 to 4 shorted and 7 to 8 shorted.

Best regards,
Hristo Mihalev

Hello,

So, you want to do upload with Prosave of TP27' program. You need Seriell RS232 (6XV1440-2K..). And pins are like What is the serial cable assignment for transferring the configuration to an RMOS operator panel? Also you could use TP27, TP37 Touch Panelsmanual (Chapter 9.3 and Appendix B)

Hope this will helps.

Best regards,

Hristo Mihalev