Yaskawa YASNAC PC NC I/O Signal Function Manual - Manual (Page 90)

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YASNAC PCNC I/O Signal Function Manual Chapter 10: Safety and Maintenance Functions
10.3 Start Interlock Input Signal
This is the input signal that disables cycle start in automatic mode operation.
If the STLK input signal is “closed”, cycle start is impossible even if the ST input signal is
“closed”.
When the STLK input signal is “closed” after the PCNC has started, it keeps operating. The
“closed” state of the STLK input signal becomes valid when the operation is interrupted by
the single-block stop or feed hold.
10.4 Alarm State Output Signal
The alarm state output signal indicates that the PCNC is in the alarm state.
When an alarm state is detected, the ALMS ouput signal is “closed”. (Note that the alarm
state is excluded due to the PCNC logic circuit operation error.)
The output signal is “opened” by reset operation after removing the cause of alarm.
10.5 External Error Detection Input Signals
The external error detection input signal forcibly places the PCNC in the alarm state.
Start Interlock Input Signal STLK #30042
Alarm State Output Signal ALMS #35000
External Error Detection
Input Signal
ERR0 to ERR2 #30055 to #30057
ERR0
When this input signal is “closed”, the PCNC displays an alarm code and
enters the alarm state. If the part program executing input signal is “closed”
during automatic operation, the PCNC stops operating after completing the
execution of the block presently executed.
ERR1
When this input signal is “closed”, the PCNC displays an alarm code and
enters the alarm state. If the part program executing input signal is “closed”
during automatic operation, the PCNC stops operating with the axes stopped
after deceleration.
ERR2
When this input signal is “closed”, the PCNC displays an alarm code and
enters the alarm state. If the part program executing input signal is “closed”
during automatic operation, the PCNC stops operating immediately and the
servo is turned OFF.