Instrument Control (GPIB, Serial, VISA, IVI)
Visa error (hex 0xBFFF001D) and error (hex 0xBFFF0015)
Hello all,
Basically I have a problem to connect my old digital scale to the computer. This scale have a RS232C serial port that only have a transmission pin and a ground pin (the specification of the pore is attached), so it should transmit data continuously (according to the vendor) without any commanded. I tried to connect the scale and the NI MAX is recognized the scale but when I go to the VISA test panel I have a error message in the view attributes page, and when I push the read bottom in the input\output I have another error that you can see in the attached pictures. I will be grateful if someone could help me to fix this problem, and if it is even posable to connect the instrument that only transmits data with VISA or LabVIEW?
thank you
It is possible. Do not write any command, just read all data from the port.
So, only open the port and start reading.
did you have the correct port settings. This depends on the port settings of your scale.
I would try the slowest setting first.
And if you have LabVIEW installed look at the basic serial examples
Hey,
I think my problem could be due to the termination characters. In the manual it is written that two terminal characters CR and LF is needed:
But in the VISA program you can chose only one of them, or custom.
Do you know how I can specify these two terminal characters in custom mode?
thank you very much for your help
@ilya.s wrote:
But in the VISA program you can chose only one of them, or custom.
Do you know how I can specify these two terminal characters in custom mode?
thank you very much for your help
You just need to manually make sure both termination characters are sent when you write. I actually use a subVI for writing commands that appends the characters to the command before writing.
For reading, just make sure the Line Feed is the termination character.
