Hello, I´ve been trying to control a power supply from my pc using rs 232.
manual here http://www.us.tdk-lambda.com/hp/pdfs/Product_manuals/83515000.pdf
With it I set up the correct serial settings; Baud rate,data bits, etc.
I download the drivers of the company (even if my model isnt there I was told they would work just fine), as you may know there´s a example there but even while appearing to work in code it doesnt irl. It doesn´t do anything. ni drivers
I´ve used NI MAX to try to communicate, to test first (but I already have a program to send commands). By doing so I´ve gotten this error;
after the command it says
Write Operation (\sADR\s06\r\s)
No Error
Read STB Operation
Error
VISA: (Hex 0xBFFF0015) Timeout expired before operation completed.
I believe this is due to a no response.
I tried using the method in this thread, the last comment: https://forums.ni.com/t5/Instrument-Control-GPIB-Serial/Serial-Communication-with-TDK-Lambda/td-p/2924700 with no success.
I have found in other similar threads that it may be due to the cable, I use a rj45-db9 and db9-usb, I have use succesfully a db9-db9 and a db9-usb, and not the original cable. I´ve used this same setup to communicate to a multimeter.