FuzzyOpen

This function loads a *.FTR file, allocates memory and creates a handle for this fuzzy instance. To use the FuzzyTech functions you need to be a registered user of one or more of the following fuzzyTech products: fuzzyTECH Online Edition, fuzzyTECH Precompiler Edition, or fuzzyTECH for Business PlusC. And you need to only use fuzzyTECH to generate the *.FTR file for FTRUN.

The application needs to call the FuzzyClose function to delete each fuzzy instance handle returned by the FuzzyOpen function.

Syntax

FuzzyOpen(sFile)

sFile:

Specifies the filename of the .FTR file to load.

Return Value

The handle to the fuzzy instance, or -1 if the function cannot complete the operation. Use IsError() to find the error number.

Related Functions

FuzzyClose, FuzzyGetShellValue, FuzzySetShellValue, FuzzyGetCodeValue, FuzzySetCodeValue, FuzzyTrace.

Example

INT hFuzzy;

INT NoHitFlag;

INT Status;

REAL MemOutput;

// open the Fuzzy Tech runtime instance

hFuzzy = FuzzyOpen
("C:\Program Files\Citect\CitectSCADA 7.10\bin\traffic.ftr");

Status = IsError();

IF hFuzzy <> -1 THEN

	MemOutput = PLCOutput;

	WHILE Status = 0 DO

		FuzzySetShellValue(hFuzzy, 0, 42.0);

		FuzzySetShellValue(hFuzzy, 1, 3.14150);

		MemOutput = FuzzyGetShellValue(hFuzzy, 2, NoHitFlag);

		Status = IsError();

		// Only write to PLC if output changes.

		// This reduces load on PLC communication.

		IF MemOutput <> PLCOutput THEN

			PLCOutput = MemOutput;

		END

		SleepMS(500);

	END

	FuzzyClose(hFuzzy);

END

See Also

FuzzyTech Functions