RS 232 to control E3633A PS error: 511

Goal: to write a short python script to create a loop of Regulation of the PD for the temperature.

PS: Aligent E3633A

Software: pyserial (python) or 232Analyzer (both producing identical errors)

System: win7 64-bit

Serial adapter: USB to serial: Belkin N10117, driver used:

COM port: 9 (also tried 10, another USB port of course)

Baudrate: 2400 (also tried 9600)

Data bits: 7 (also tried 8)

Parity: Even (also tried no peers and odd)

Stop bit: 1 (also tried 2 and 1.5)

Please forgive me, I'm a noob in series.

When I write in ASCII: SYST:BEEP (with pyserial prompt cmd or 232Analyzer), feeding by report an error-511. I looked in the manual of the PS and the error is an error 'Framing '. I double and triple checked my connections and settings (COM, Baudrate, parity, data bits) on the computer and the PS. I also tried to change the data to 8 bits, and the results were much worse. With the data bits, the value 8 with no parity, the PS most of the time would be inadmissible for sent orders. I tried many different commands for the PS, but each order I send gives me error 511. I have not been able to root causes this, but it seems to be a very simple thing to control this power by using RS232.

Note: The GPIB is not an option for me because of the cost.

Thanks for any help you can provide. I can provide more details if requested pyserial/232Analyzer. = D

-Andy

Problem solved!

Parameters which resolved:

You will need TO USE: 8 bits no parity, no matter what output baud rate and character of endpoint \n

Had too many problems entering the stop of character in the 232Analyzer. Pyserial used instead.

I don't understand why 7 bit + parity does not work, but it is not too much on are because it works with 8-bit.

Thank you markus kossmann for your advice. It helped a lot.

Tags: NI Hardware

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