Motf WaitForCount

NOTE: This method is deprecated. Please use MOTF.WaitForDistance()

Wait for scaled HW encoder counter to reach or exceed a specific value.

Syntax

WaitForCount ( int scaledEncoderCounts )

WaitForCount ( int scaledEncoderCounts , bool isAbsolute )

Parameters

scaledEncoderCounts	int	Scaled encoder count.
isAbsolute	bool	Count is absolute or relative to the last position when StopTrackingAndJump is called. Default False.

isAbsolute = TRUE	absolute - indicates that the wait is to use absolute scaled encoder counts.
isAbsolute = FALSE	relative - wait for a count relative to the position when the last StopTrackingAndJump occurred. This will be the default value.

Copy

Example

-- This sample marks a series of circles spaced at a constant distance
SetUnits(Units.Millimeters)
-- Use MOTF Port 0
MOTF.Mode = Encoder.ExternalSingleAxis
-- Web direction
MOTF.Direction = Direction.BottomToTop
-- 10um linear resolution for example
encoderLinResInMmPerCount = 0.010
-- Bits/Mm * Mm/Count -> Bits/Count
MOTF.CalFactor = System.CalFactorY * encoderLinResInMmPerCount

-- Initialize the MOTF settings
MOTF.Initialize()

-- Initialize laser/scan-head settings
Laser.MarkSpeed = 1000
Laser.MarkDelay = 200
Laser.JumpSpeed = 3000
Laser.JumpDelay = 200
Laser.Frequency = 20
Laser.DutyCycle1 = 50
Laser.Power = 50
Laser.LaserOnDelay = 75
Laser.LaserOffDelay = 125
Laser.PolyDelay = 50
Laser.VariPolyDelayFlag = true

-- Wait for this web travel before marking
partDistanceInMm = 50.
partDistanceInBits = partDistanceInMm * System.CalFactorY

-- Wait for start signal
IO.WaitForIo(Pin.Din.UserIn1,Trigger.Edge.Rising, 0, 0, true)

-- Initialize to wait the initial distance
MOTF.ResetTracking()
System.Flush()
-- Repeat until aborted via external signal
while IO.ReadPin(Pin.Din.UserIn4) == false do
    -- Using MOTF CalFactor scaled counts which are galvo bits
    MOTF.WaitForCount(partDistanceInBits)
    -- Counters are automatically reset when WaitForCount() releases
    MOTF.StartTracking(Tracking.WhileMarking)
    Image.Circle(0, 0, 20)
    MOTF.StopTrackingAndJump(0, 0, 0, 200)
    Laser.WaitForEnd()
    -- Counters are still counting and distance being measured
end

Report ("Job Finished")