setOuputBit

setOutputBit ( integer Bit, integer Value )

Use this function to set the state of the specified general purpose output bit (GPOUT) on the currently selected framegrabber.

Parameters

Timeout

Integer specifying the zero-based index of the output bit.

Value

Boolean specifying the logical value of the output bit.

Error flags

ERR_OK

The flag set if successful.

ERR_FAILED

The flag set if failed.

Example

This set of statements performs the continuous measurement of the average gray level of a live image, compares it to the value of 183 and sets output bit #1 to a certain logical state depending on the result:

do

grabim(1)

threshold(1,100,M_PRESET,0.,255.,TRUE,FALSE)

selectParam("grayAvrg")

measObjects(100,1,"")

x=Grid.GetParamValue(0, "GrayAvrg")

if x>183 then

setOutputBit(0,TRUE)

else

setOuptupBit(0,FALSE)

endif

loop

Remark

If you use BitFlow framegrabbers, the valid values of the input bit index are 0-2 for RoadRunner and R3 Diff boards, 0-4 for R3 CL, 0-5 for Raven and 0-6 for R64.