MOTF(Mark On The Fly)

Marking On The Fly (MOTF) support is provided through the use of several configuration and activation commands. Motion tracking in either the X, Y or both axis can be configured using a digital quadrature input, or by simulating the motion in situations where an encoder feedback is not available but the motion speed is relatively constant.

The default single-axis MOTF configuration is set using the parameters Motf.CalFactor, Motf.Mode and Motf.Direction defined in the Controller Configuration file and additionally changeable as part of a job. Run-time control of the MOTF operation is performed through the use of several commands including Motf.Initialize and Motf.StartTracking.

The MOTF commands are designed to permit multiple scenarios that include variable spaced part detection, uniformly spaced image marking, and tiling based continuous image marking. The diagram below illustrates how a Script would initiate and control a sequence of MOTF operations where a part is detected and marking synchronized with the position and motion of each part.

Typical MOTF Job Flow

More illustrations - Tipical constant spacing MOTF job

Properties

CalFactor	Sets the relationship between laser positioning bits to motion encoder counts. This value will be applied to both the MOTF 0 and MOTF 1 encoder ports.
CalFactor0	Sets the relationship between laser positioning bits to motion encoder counts for encoder port MOTF 0.
CalFactor1	Sets the relationship between laser positioning bits to motion encoder counts for encoder port MOTF 1.
Direction	The target travel direction of the web or conveying system relative to a job coordinate system.
Mode	Defines how MOTF position information is derived.
Tracking	Sets the MOTF tracking behavior.
WaitForCounterPort	Sets the MOTF port that will be used for commands

 

Methods

Initialize	Initialize the Scan controller for Marking-on-the-fly.
ResetTracking	Reset all counters used in the MOTF model.
StartTracking	MOTF compensation is activated for all geometric shapes.
StopTrackingAndJump	Stops MOTF compensation and jump to reset location.
TriggerOnIO	Sets the trigger source for the part sensing trigger port
WaitForCount	Wait for HW encoder counter to reach or exceed a specific value. (Deprecated)
WaitForDistance	This command will wait for a distance (in user units) to reach or exceed a specific value.
WaitForTriggerCount	Wait for the trigger condition to be satisfied and then the count to be met or exceeded. (Deprecated)
WaitForTriggerDistance	Wait for the trigger to be satisfied and then the distance to be met or exceeded.
EnableLaserRegulation	Enables laser parameter regulation as a function of MOTF speed.
EnableSpeedRegulation	Enables marking speed regulation as a function of MOTF speed.
DisableSpeedRegulation	Disables speed regulation.
DisableLaserRegulation	Disables laser regulation.
CenterOfRotation	Sets the center of rotation for rotary MOTF operation.
DelayCompensation	Sets a compensation value in usec for delays in MOTF system. (Deprecated)
PosFFCompEnable	Sets the method of the MOTF velocity-derived galvo position feed-forward compensation.