Python Rs232

[Rajinder]

Hi all,
I am using python to control a digital multimeter through rs232. I have mages to send the Meyer commands from real term, so I can read the I'd number, read the software version, measure current etc.
This works fine.
I want to expand this so I can read and measure from the Meyer nut use python.
I want to save the results I.e. current measurements into a excel spreadsheet. I am using python v2.7
My questions are
1. I have to use pyserial is that correct
2. How do I save results in excel
3. Commands to the meter are for example *idn? (This returns the I'd value if the meter). How do I send this via python
4. I want this to run from a gui, buttons to read I'd, button to measure current. I have no idea on this.
I have a basic understanding of python but not an expert.
I look forward to hearing from you.
Best regards
Raj

 

[Harald Kapp]

1. That's one possibility, yes.
2. Write data to a CSV file. This is a simple text format which can be imported into Excel rather easily.
3. From pyserial use the write method.
4. Get it running from the console first. Then find a framework you're comfortable with (e.g. tTinker) to write a GUI on top of the console program. A list of frameworks is here.

This website shows how to use pyserial.

 

[Rajinder]

Thanks. I have also cone across PyVisa, this I believe are a set of libraries for instrument control such as RS232, GBIP etc.
Not sure if they have libraries for my multimeter.