Motf TriggerOnIO

MOTF can be triggered by an external signal. This command will wait for a trigger condition to be met. It will then restart counting.

Syntax

TriggerOnIO(Pin pin,Trigger trigger,float distanceThreshold)

Parameters

pin	Pin	The input pin.
trigger	Trigger	The external signal (pulse).
float	distanceThreshold	After a reset, the distance that the MOTF system must travel before the trigger is armed.

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Example

-- This sample marks a circle on a part that is detected.
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
-- Trigger on UserIn1 when a part is detected
-- Immediately start checking for the next part
MOTF.TriggerOnIO(Pin.Din.UserIn1, Trigger.Edge.Rising, 0)

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

-- Wait for this web travel before marking
triggerDistance = 50.

-- Repeat until aborted via external signal
while IO.ReadPin(Pin.Din.UserIn4) == false do
    MOTF.WaitForTriggerDistance(triggerDistance)
    MOTF.ResetTracking()
    MOTF.StartTracking(Tracking.WhileMarking)
    Image.Circle(0, 0, 20)
    MOTF.StopTrackingAndJump(0, 0, 0, 200)
    Laser.WaitForEnd()
end

Report ("Job Finished")