Proper Use of FLOAT

TurnipTruck

Greetings,

I am working on a project in which I am monitoring analog to digital convertors. The convertor resolution is 12-bit (4,095 possible values).

In the process of calculation, I need to arrive at a decimal value less than one. I always thought that this would be the place for a FLOAT variable.

DEFINE_VARIABLE
FLOAT fVOLTS
....EVENT....
fVOLTS=(((cTRANS_MESSAGE[9]*256)+(cTRANS_MESSAGE[10]))/4095)

Removing the /4095 will return a 12-bit range integer value for fVOLTS, but trying to divide that value by 4095 gives zero. I am observing the zero value in debug as well as with an FTOA sent to a touchpanel.

Any help appreciated. Thank you.

dchristo

If you change your array cTrans_Message to be a Float it will work as expected.

--D

TurnipTruck

Thank you. Worked like a champ.

Is there an easy way to truncate a FLOAT value down to a pre-determined number of decimal places?

I need not display beyond .xx for my purposes.

Thanks!

GSLogic

Did you try the FORMAT command?

FORMAT('%-5.2f',123.234) '123.23'

Check the Netlinx Keyword Help: Index - FORMAT