Installation manual
CNC 8060
CNC 8065
LOGIC CNC INPUTS AND OUTPUTS.
6.
(REF: 1402)
·315·
General modifiable signals.
To manage the transfer inhibit in an independent movement, the PLC also has a particular
mark per axis (_IXFERINH(axis) mark). See " _IXFERINH(axis)" on page 331.
_FEEDHOL
There is a mark for each channel. The mnemonics for each channel are the following.
_FEEDHOLC1 (can also be programmed as _FEEDHOL)
_FEEDHOLC2 _FEEDHOLC3 _FEEDHOLC4
If the PLC sets this mark low (=0), the CNC channel interrupts momentarily the movement
of the axes; but keeping the spindle turning. When this mark goes back high (=1), the axes
resume their motion. All the stops and starts of the axes are carried out with the
corresponding acceleration and deceleration.
The movement of the independent axes is not affected by this mark.
If the _FEEDHOL mark is set low (=0) in a motionless block, the CNC continues executing
the program until it detects a motion block.
On hirth axes, if the axis does not stop in a particular position, the CNC does not activate
the MATCH(axis) mark.
The "Freal" text of the screens of the automatic and jog modes shows the status of this mark.
The text appears in red when the _FEEDHOL mark is active. The status of the mark is not
displayed if the screen does not show this text.
CYSTART
There is a mark for each channel. The mnemonics for each channel are the following.
CYSTARTC1 (can also be programmed as CYSTART)
CYSTARTC2 CYSTARTC3 CYSTARTC4
When the operator presses the [START] key, the CNC lets the PLC know by activating the
START mark. If the rest of the conditions are met (hydraulic, safety, etc.), the PLC must
activate the CYSTART mark in order for the program to start running.
SBLOCK
There is a mark for each channel. The mnemonics for each channel are the following.
SBLOCKC1 (can also be programmed as SBLOCK)
SBLOCKC2 SBLOCKC3 SBLOCKC4
If the PLC sets this mark high (=1), the CNC switches to SINGLE BLOCK operation mode.
MANRAPID
There is a mark for each channel. The mnemonics for each channel are the following.
MANRAPIDC1 (can also be programmed as MANRAPID)
MANRAPIDC2 MANRAPIDC3 MANRAPIDC4
This mark is treated in a similar way to the Rapid traverse key. If the PLC turns this mark
on, the CNC selects the rapid traverse for continuous jog movements. The incremental jog
moves are carried out at the active feedrate in jog mode. When the PLC turns this mark off,
all jog moves are carried out at the active feedrate in jog mode.
XFITOIND Meaning.
Yes The _XFERINH mark affects the movement of the independent axis programmed
from the PLC and from the CNC.
No The _XFERINH mark does not affect the movements of the independent axis
programmed from the PLC; but it does affect the ones programmed from the
CNC.
START AND (rest of conditions) = CYSTART
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