Description |
|
mcACT_CFG (1) |
Calculates the first expected registration mark position using the set parameters |
mcFIRST_TRIGGER (2) |
Uses the first valid registration mark detected as the first expected position |
•The expected position will then always be shifted forward from the actual detected registration mark by "ProductParameters.Length" or with "ProductParameters.LengthChange".
•During operation, "ProductParameters.RegMarkPosition" can be used to shift the registration mark position to a desired or new position in the product interval. This mostly affects the calculation of "PositionError" only.
Mode: mcACT_CFG
This basic mode can be used if the function block is already enabled before the axes involved are started and all values for the subsequent parameters of the input structure "ProductParameters" are known with a sufficient degree of accuracy:
•StartOffset
•Length
•DistanceToSensor
•RegMarkPosition
This parameter is used to calculate the first expected registration mark position as follows:
FirstRegMarkPosition = ((Length - (DistanceToSensor mod Length) + RegMarkPosition) mod Length) + StartOffset
Fig.: mcACT_CFG
Mode: mcFIRST_TRIGGER
This basic mode can be used if the registration mark position cannot be set until the machine has been started or one of the values for the subsequent parameters of the "ProductParameters" input structure is unknown:
•StartOffset
•RegMarkPosition
The position of the first registration mark that is identified as valid is captured and used for subsequent calculations.
Fig.: mcFIRST_TRIGGER
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