How interface bronkhorst RS232 communication flowmeter in DIAdem DAC?

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  I chroma programmable DC power. Based on the programming of the Instrument manual I develop using RS232 communication. Based on the program I can set the voltage, current, over-current protection, protection against overvoltages and make IT / OFF out put supply perfectly.

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  I have to communicate via the interface RS-232 of the PC with a card microprocessor. I use the "Advanced Serial write and Read.vi ' off examples of LabVIEW and it works on the principle.
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  I am trying to send a SPELL of 5003 01 command to my card that I am logged in via Rs232. This command should get my PCB to change play modes.

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  I use the CTS line for flow control. I know that the CTS signal is reaching the computer of my PCB as I tested it and I know that the PCB can send data to the computer I get the answer correct 4 bytes in HEXADECIMAL when I use the reading visa to get my player to PCB data.

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  I use the good 9600 baud rate, 8 bits of data and no parity, 1 stop bit. I am using RTS/CTS flow control, but the RTS line is not connected. I don't think it should be a problem that RTS is used to indicate the Council when to send data to the PC to my knowledge and is not serious.

  FYI the written string section of the VI is unused. The string to write, that's where I'm seizes my "5003 01" command.

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