Fagor CNC 8060, Installation Manual

Page: 418 / 698

Installation manual.
CNC 8060
CNC 8065
6.
LOGIC
CN
C INPUTS AN
D OUTPUTS.
Gene
ral mo
difia
b
le sign
als.
·418·
(R
EF
: 1709)
6.8 General modifiable signals.
_EMERGEN
There is a mark for each channel. The mnemonics for each channel are the following.
_EMERGENC1 (can also be programmed as _EMERGEN)
_EMERGENC2 _EMERGENC3 _EMERGENC4
If the PLC sets this mark low (=0), the CNC stops the axes and the spindle and displays the
corresponding error message. The CNC interrupts the movement of the axes leaving them
without command; the axes do not stop using a set acceleration ramp.
While the _EMERGEN mark is low (=0), the CNC does not allow executing programs and
aborts any axis or spindle movement.
_STOP
There is a mark for each channel. The mnemonics for each channel are the following.
_STOPC1 (can also be programmed as _STOP)
_STOPC2 _STOPC3 _STOPC4
If the PLC sets this mark at a low logic level, the CNC channel interrupts the execution of
the part program. To resume the execution of the program, besides setting this mark at a
high logical level, the PLC should activate the CYSTART mark. See
"CYSTART" on page
419.
• This mark does not stop the spindle.
• This mark does not affect the independent movement of an axis (independent
interpolator), which also does not affect the key [STOP].
• This mark does not turn off the laser.
• This mark does not disable gap control, except in approach movement. In this case, the
axis will remain stationary and without gap control until the movement is resumed.
The treatment received by the signal _STOP is similar to that given to the [STOP] key in the
CNC. With this signal at a low logic level, all keys remain enabled.
_XFERINH
There is a mark for each channel. The mnemonics for each channel are the following.
_XFERINHC1 (can also be programmed as _XFERINH)
_XFERINHC2 _XFERINHC3 _XFERINHC4
If the PLC sets this mark low (=0), the CNC channel interrupts the execution of the program
at the end of the block being executed and inhibits the execution of the next block. If the axis
needs more braking distance than it has with the block being executed, the CNC can continue
executing more blocks until the axis comes to a complete stop respecting the dynamics of
the machine. When this mark is set back high (=1), the CNC resumes the execution of the
program.
Having this mark (=0), the CNC does not allow jog movements for the axes of the channel;
pressing a jog key is ignored.
The _EMERGEN, _STOP, _FEEDHOL, _XFERINH and CYSTART signals must be defined in the PLC
program.
I-EMERG AND (rest of conditions) = _EMERGEN
If the emergency-stop button is pressed (I-EMERG=0) or any other emergency
situation occurs (=0), the _EMERGEN mark is set low (=0) causing an emergency
at the CNC.