Installation manual
CNC 8055
CNC 8055i
CONCEPTS
7.
SOFT: V02.2X
·361·
Treatment of emergency signals
The emergency outputs of the CNC are:
/ALARM (M5507)
Physical output to the PLC.
/EMERGENCY OUTPUT
Physical output to the outside.
Pin 2 of connector X10 of the –Axes– module of the 8055 CNC
Pin 2 of connector X2 of the 8055i CNC.
There are to ways to cause an emergency at the CNC, by activating the physical input
/EMERGENCY STOP or the general logic input "/EMERGEN" from the PLC.
Whenever any of these signals is activated, the CNC stops the axes feed and the spindle rotation
and it displays the corresponding error message.
By the same token, when the CNC detects an internal malfunction or at an external device, it stops
the axes feed and the spindle rotation displaying at the same time the corresponding error message.
In both cases, the CNC will activate the /EMERGENCY OUTPUT and /ALARM signals to indicate
to the PLC and to the outside world that an emergency has occurred at the CNC.
Once the cause of the emergency has disappeared, the CNC will deactivate these signals to indicate
to the PLC and to the outside world that everything is back to normal.
PLC Treatment of emergency signals
The emergency inputs of the PLC are:
/EMERGENCY STOP
Physical input coming from the outside.
/ALARM (M5507)
Physical input coming from the CNC.
The emergency outputs of the PLC are:
/EMERGENCY OUTPUT
Physical output to the outside.
/EMERGEN (M5000)
Physical output to the CNC.
There are two ways to "tell" the PLC that an emergency condition must be treated, by activating the
physical input EMERGENCY STOP of the PLC (which is I1) or the general logic input "/ALARM"
of the PLC which is mark M5507.
In both cases, the treatment of these signals will be up to the PLC programmer. The PLC program
must have the necessary instructions to properly attend to these emergency inputs and act
accordingly.
By the same token, the PLC program must have the necessary instructions to properly activate the
emergency outputs when required.
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