ZD340_07d_e.doc / Apr-17
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4.8. Cut-to-Length Control Counter: F07.062 = 7 or 8
The cut-to-length function described here requires the use of a counter model possessing at
least two front thumbwheel switches.
Modes 7 and 8 serve for control of cut-to-length applications with line drives providing a fast –
slow – stop speed profile. The table below explains which functions are assigned to the
thumbwheels and preset registers
Preset
Function
Explanation
Thumbwheel 1
Tool Width
Compensates the cutting length setting by the
width of the saw blade or cutting tool
Thumbwheel 2
Cutting Length
Desired total length of the piece to cut
Preset register
F01.004
(keypad entry)
Pre-Stop
Anticipation distance where the speed changes
from high to low before reaching the final position.
Preset register
F01.005
(keypad entry)
Correction Stop
Correction of the overshoot distance which the drive
produces when changing from low speed to stop
Preselection registers K1 to K4 (F01.000 to F01.003) are not available for any settings, since this
application uses the same registers for calculations and intermediate results.
With operation mode F07.062 set to 7, the counter starts from zero and counts up until reaching
the value of “Cutting Length plus Tool Width”. With operation mode F07.062 set to 8, the start
signal presets the counter to the negative value of the Tool Width, from where the counter
counts up until it reaches “Cutting Length”
All other functions are fully similar with these two modes.
This mode provides display of the actual position only and also the analogue output (if
applicable) is assigned to the actual counter value.
Measuring wheel
Encoder
A,B
En co der 1
1 2 3 4 5 6
Out2
Out3
Out4
Run comma nd
Fast / Slow select
Rea dy to cu t
Start command
