CWT Software Configuration Handbook

Value        Path: <cwt><PRINTER><ttp2030><attributes><attribute id="41" >

Defines the distance between the trailing edge of the black mark and desired cut position.

The cut offset uses the two attributes high byte and low byte. Only the low byte is used if the cut offset is smaller than 33 mm.

This is how you calculate the value to be entered:

1.Measure the desired cut offset (distance between trailing edge of the black mark and desired cut position).

2.Add 25 mm (distance between cutter and black mark sensor).

3.Divide the total cut offset value by 0.125 mm (the height of a pixel line).

Now there are two alternatives:

A – If the number of pixel lines (see step 2 above) is less than or equal to 256 (32 mm), use this value as the low byte value and set high byte value = 0.

Example: We need 3 mm cut offset.

3 ÷ 0.125 = 24

High byte = 0
Low byte = 24

B – If the number of pixel lines (see step 2 above) exceeds 256:

1.Divide the number of pixel lines calculated in step 2 above by 256 (the max. binary value of a byte).

2.Round off (down) and enter this integer as the high byte value.

3.Multiply the rounded off high byte value by 256 and subtract the result from the total number of pixel lines calculated in step 2 above.

4.Enter the difference as the low byte value.

Example: We need 55 mm cut offset:

55 ÷ 0.125 = 440 (number of pixel lines)
440 ÷ 256 = 1.71875 → High byte = 1 (rounded off)
440 – (1 × 256) = 184 → Low byte = 184

However, if the cut is 25 mm or closer to the next black mark, reduce the cut offset to 0 high and 0 low to see if the original cut position can be used and only a slight change to the low byte is required.

Use black mark low byte cut offset

black mark low byte cut offset value

Example:

<attribute id="41" value="0" use="false" description="Black mark High byte cut offset" min="0" max="255" />