
2.PREAPARATIONS FOR OPERATION B-63783EN-1/01
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2.4 ALARM SIGNALS
Overview
When the CNC placed in the alarm state, an alarm is displayed on the
screen, and the alarm-on signal is set to 1. The alarm type signal
corresponding to the type of an issued alarm is set to 1.
The speed control servo alarm ignore signal causes the CNC to ignore a
speed control servo alarm if issued.
If the voltage of the battery used to maintain the contents of memory
falls below a specified value while the power to the CNC is off, the
battery alarm signal is set to 1. When the battery used for the
absolute-position detector is approaching the end of its service life, the
absolute-position detector battery voltage decrease alarm signal is set
to 1. Once the battery reaches the end of its service life, the absolute-
position detector battery voltage zero alarm signal is set to 1.
Signal
Alarm-on signal
AL<F000#1>
[Classification] Output signal
[Function] Reports that the CNC is in the alarm state.
[Output condition] This signal is set to 1 in the following case:
- When the CNC is placed in alarm state.
This signal is set to 0 in the following case:
- When the alarm is released by a CNC reset or alarm cancellation.
After some alarms are released by a CNC reset or alarm cancellation,
the alarm state may occur again, and AL is issued if the causes of the
alarms are not corrected. In such a case, AL may be set to 0
momentarily.
Alarm type signal
OTALM<F006#3>, OHALM<F006#2>, SVALM <F006#1>, PSALM <F006#0>, SYALM<F006#4>
[Classification] Output signal
[Function] Posts the type of an issued alarm. The following signals are assigned to
the alarm types.
Type of alarm Signal output
Overtravel alarm OTALM
Overheat alarm OHALM
Servo alarm SVALM
Program/mishandling alarm PSALM
Control unit alarm SYALM
[Output condition] A signal is set to 1 in the following case:
- When the CNC is placed in the corresponding alarm state.
A signal is set to 0 in the following case:
- When the corresponding alarm is released by a CNC reset or
alarm cancellation