ie <STX> DATA <ETX>
With a Com port viewer I can see only the EOT symbol when the cancel button is pressed on the keypad.
I have tried Hex, ASCII, DEC, base64 and Binary. Just cant communicate with this device. All communication protocol settings are correct.
- Half Duplex - 9800 Baud rate - 7 data bits - Even Parity - 1 stop bit
Any hint would be very helpful. Thanks.