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This is a reference printed on the material, usually in the form of a square mark that contrasts with the background (e.g. black on white). Registration marks have a defined distance to the interval starting position (e.g. cut position).
Usually one registration mark is printed on the material per product interval.
The actual distances between the individual registration marks differ only minimally from each other. Tolerances of approximately 1% of the material length or less are possible. These tolerances can occur due to material changes caused by tension when winding the material on a roll.
A registration mark can also be viewed as a logical signal that can be created and detected at a trigger input on the ACOPOS device. For this reason, the registration mark signal is also sometimes referred to as a "trigger signal".
This is the abbreviation for Registration Mark.
This refers to the target interval between two registration marks. This could also mean the distance between two cuts, which could be different than the distance between the registration marks due to correction.
This refers to the complete procedure to manufacture one full product. A product interval/cycle includes the first cut/seal/etc., a registration mark with a defined position within the interval and a finishing cut/seal/etc. (also the beginning of the next product interval/cycle).
This refers to the beginning of a new product cycle, which is also the end of the previous cycle (with a seal, cut, etc.). The interval start event can either be triggered based on the master interval or by an "external" event.
This is the distance traveled by the master in which exactly 1 product is produced. The slave axis can travel variable distances but must begin a new product cycle of its own at the start of the master interval. Normally, one registration mark must occur within one master interval.
A constant master interval can be used to generate the interval start event.
This refers to the position in the current interval for the current registration mark that results from adding the preceding registration mark position and the product length. A valid registration mark is accepted within the tolerance window around the expected position ("WindowPositive", "WindowNegative").
This expected window serves to prevent errors resulting from other printed marks on the material or false triggering of the sensor (e.g. caused by material movement).
A detected registration mark is located within the expected window (expected position +/- ".WindowXxx") with a certain width (if defined) specified with ".XxxWidth" or as an edge.
This is the abbreviation for Smart Process Technology function blocks. These function blocks are processed on the drive. They are designed for things like quickly processing trigger events and are used by the MC_BR_RegMarkCalc001 function block for event detection and position measurement.
For more details on SPT function blocks, see ACOPOS ddrive functions.