
B–63683EN/01
3. PRESSING FUNCTION
59
CAUTION
1 Override signals ROV1 and ROV2 for rapid traverse are
effective during positioning to the first punch point in the
nibbling block. After that, the ROV1 and ROV2 signals are
ineffective during positioning for the pitch to the last punch
point, and the override rate is fixed to 100%.
2 When the single block signal is set to 1 during nibbling, the
machine stops after consecutive nibbling operations are
completed.
3 While the tool moves to the first punch point during nibbling,
setting the automatic operation stop (*SP) signal to 0 stops
the automatic operation of the CNC. At the same time,
positioning stops immediately, setting the automatic
operation starting (STL) signal to 0 and the automatic
operation stopping (SPL) signal to 1.
When the *SP signal is set to 0 during pitch movement from
the first punch point to the last punch point, automatic
operation of the CNC is stopped immediately. However,
automatic operation of the CNC can also be stopped after
the end of the pitch movement when the *SP signal is set
to 0 by the setting of parameter NSP (No. 16181#2). In this
case, the PF and NBL signals are turned off when the *PE
signal goes to 0.
In conventional nibbling, once press start signal PF is output, it remains
set to 1 until nibbling has been completed, so that press operation is
repeated periodically without the press stopping. This function can
change this sequence to one using signals *PFIN and *PE, like that for
a 1–cycle press. In such a case, signal NBL is not set to 1 and a press
sequence is executed in the same way as that for a 1–cycle press.
This function changes only the press sequence. Nibbling command
operation is controlled in the same way as for a conventional system.
#7
16181
#6 #5 #4 #3
NPF
#2 #1 #0
[Data type] Bit
NPF In nibbling mode, a press sequence is:
0 : Executed according to conventional signals, NBL and *NFIN.
1 : Executed according to signals PF, *PFIN, and *PE.
When this parameter is set to 1, a press sequence is executed in the same
way as that for a 1–cycle press.
Changing a nibbling
mode sequence
D Condition for enabling
the function