PAC Control and ioControl NumberToString() results different from OptoControl's NumberToString()

Applies To:

PAC Control Professional
PAC Control Basic
ioControl Professional
ioControl Basic

Versions Affected:

Affected versions beginning with: R8.0a PAC Control
R1.0a ioControl

Symptoms:

The NumberToString( ) command in PAC Control and ioControl does not produce the same results as NumberToString( ) in OptoControl.

Workaround:

Use the following OptoScript code to format the results from PAC Control's NumberToString( ) command to match the results from OptoControl's NumberToString( ) command.

OptoScript sample code:

// For the case of 0, we don't want scientific notation or a decimal point (to match OptoControl)
if (TestFloat== 0) then
   OptoNumToStr= "0";

else
   // PAC Control Command: NumberToString (Convert, Put Result in)
   // The format returned by this command is X.000000e+EE
   // where the X remains the same,
   // the^{(sign on the exponent could be + or -)}// the EE is not changing unless it's 00; if EE = "00", then "e+EE" is dropped
   // drop up to 6 trailing 0s to the right of the decimal point

   NumberToString(TestFloat, OptoNumToStr2);

   // Find 'e' in the string; 'e' = 101 in decimal; split into significand and exponent
   ch_pos = FindCharacterInString(101, 0, OptoNumtoStr2);
   GetSubstring(OptoNumToStr2, 0, ch_pos, OptoNumToStr);
   GetSubstring(OptoNumToStr2,ch_pos, 4, OptoNumToStr2);

   // Remove all '0' from the end of the significand; '0'= 48 in decimal
DecrementVariable(ch_pos);
   while (GetNthCharacter(OptoNumToStr, ch_pos) == 48
      GetSubstring(OptoNumToStr, 0, ch_pos, OptoNumToStr);
      DecrementVariable(ch_pos);
   wend

   // If Exponent not equal to 00, append to output string
   if (OptoNumToStr2== "e+00") then
   else
      OptoNumToStr += OptoNumToStr2;
   endif

endif

Resolution:

Opto 22 is aware of this issue and recommends using the Workaround.

Questions?

Contact: Opto 22 Product Support.
Phone: 800-835-6786 or 951-695-3080
Email: support@opto22.com

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