Wolly

Thank you, it helped

Unitronics V1040. The screen virtual keyboard image was lost. Instead of virtual buttons, stripes are displayed on the screen. I reloaded the new operating system to the PLC, but it did not help. How I can fix this?

I use the Protocol Scan command to read the ASCII character string 0D 0A 31 32 20 20 20 31 30 31 2E 33 32 6B 50 61 61 0D 0A - "/ n / r12 101.32kPaa / n / r" from the receive buffer. The number of bytes of the pressure value kPaa is not constant, it can be from 3 to 6 bytes. Therefore, when configuring a command, I use "Decimal, no fixed length". After scanning, the command returns the Index of the received message -1. If in this case I use the "Decimal, fixed length" (6 bytes) the command returns the result 0 "OK", and the number of bytes received 19. What is the reason that the message considers as invalid?