I now have the Omega HH506RA talking to the computer via the USB cable running the Omega software. The software works and you can log the results but it is clumsy to do what I want which is record the temperature and plot both probes every 30 seconds.
So far I can communicate to the logger, read values and translate the return values.
Some of the valuable resources for people working on this include:
- Omega HH506RA Serial Protocol – http://www.jacquesf.com/blog/2010/03/omega-hh506ra-serial-protocol/ – The best description of the protocol and how to talk to the logger
- http://forums.ni.com/ni/attachments/ni/140/25762/1/HH506RA%20protocol.doc – Details of complete commands
I will start posting the program as I get it into some shape.