ascii character problem

Gale Johnson

Licensed User
I am trying to send information via a serial port to an electronic machine. The machine requires a coding of "K" to start, followed by CHR(02). At the end of machine coding I need to send CHR(03). Instead, the characters being sent are chr(191) and chr(192). Is there some way to force the serial program to send the correct 02 & 03 ASCII characters?