Float Addressing - Unitronics PLC

[jweav2223]

Attempting to display values of a couple of Floats from a Unitronics PLC. Address is MF0 in the PLC so attempted F4001 without any success. According to their Help Files Memory Floats start at 4000h. Memory Integers (16 bit unsigned) I was able to get to work correctly starting with 40001 with their Help Files indicating they start at 00000h, 

[Archie]

4000h is probably the register offset. Convert that to decimal and you get 16384. Add 1 to it because the Modicon style addressing start at 1. Then you add a "4" at the beginning to indicate the register memory space. And finally prefix it with an "F" to tell AdvancedHMI to read 2 registers and convert to float. The resulting address would then be:

F416385

[jweav2223]

Showing to be a valid address and when I change the value via the Controller it changes the value on AdvancedHMI. The values are different, however. For example in the Controller I have the value as 12.35 and the AdvancedHMI is displaying -1.594959E-23.

[Archie]

Try different combinations of WordSwap and ByteSwap settings in the driver properties.

You may also have to apply the latest driver patch as described here:

http://advancedhmi.com/forum/index.php?topic=1612.msg8801#msg8801

[DougLyons]

This result would be what happens with a WordSwap, so using WordSwap should be all that is required. The patch may also be needed.

[Archie]

I made a mistake with the property names... The correct names are SwapBytes and SwapWords. I got my words swapped (no pun intended).

[jweav2223]

Winner! Changed SwapWords to True for the Driver and it is now reading correctly. Appreciate all the help.