I am trying to use a PR33-26 4-20mA current transmitter to control the position of a flow control valve.
On the web documentation for the device it claims that DAC value of 670 corresponds to 4mA and 3460 corresponds to 20mA. There does not seem to be any indication of which register address to use.
I conducted an experiment where I sweep register addresses, starting at register 0x00, and DAC values and found that actually each register address basically corresponds to a small mA range (ranges like 0-1mA, 1-2mA, … , 19-20mA). The documentation and reference code provided seem to be totally inaccurate.
Am I missing something? Is the result of my experiment wrong or is the documentation wrong? If documentation is wrong, this should be corrected as I spent a non-trivial amount of time working this out.