Maybe the manufacturer can give us a register list/map. Solution 1 If you are trying to send data including ASCII control codes such as STX and ETX, then you really need to be very careful about what else you are sending. STX (start of text) ctrl B: 3: 03: ETX (end of text).

The RS232 serial interface allows one pump to be controlled by a PC based software tool. In the previous post weve seen how to send and receive data on the serial port with Python and plot it live using a pretty GUI. General Communication protocol 4 KNF Flodos AG CPSIMDOS02EN04166851.docx 2 General The SIMDOS RC Plus pumps can be controlled by using the standard RS232 serial interface (COM1, COM2, ). To write control characters to a serial device. Serial Protocol Stx Etx - lasopaout Introduction. The STX/ETX- protocol consist of control characters, ASCII-coded data (function-number, mode, data, errorcode) and a binary coded checksum STX, ETX, ACK, SYN are control characters (STX=0x02, ETX=0x03) (→ 2.2.2 Control Character Definition).

One of the links suggests that Delta use Modbus. Your instrument provides a serial protocol by framing the data between STX ( start of text ) and ETX ( end of text ) which are values 2 and 3 respectively. Also some co-operation from an owner of such an inverter to run tests for me from time to time and give me some serial port traces would be required. PWM to output a 38 kHz carrier on pin 11 and serial data on pin 2.

Serial protocol stx etx