I have been trying to communicate with my Keller pressure sensor with Keller's Communication Protocol and I have written my own VIs to set the hexadecimal frame (see attached VI). I also wrote my own "16-Checksum" VI which shows the same CRC check as mentioned in protocol example at page 9.
I am then confident with my program, though it is still not perfect. The problem is that the answer that I get is something totally wrong against the one I should read (see Capture). My sensor's address is 91 -> 5B in hex display and I am just trying to read its pressure -> Function code 03.
If someone has already experienced this language and such a Keller device, I would be very very grateful for some hints.
Thank you in advance for your answer(s).
Best regards