
B-64663EN/01 LASER FUNCTION 6.TRACING CONTROL
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6.1.5 Tracing Alarm
Overview
Two check functions are provided for tracing.
Over-shift alarm
If, during approach, the nozzle comes too close to the workpiece, the
nozzle is stopped by means of the over-shift alarm, and the alarm
signal (TRALM) is sent to the PMC.
The level at which the over-shift alarm is issued can be set in
parameter No. 15533. Set a value within the range of the sensor, and
consider the overrun that occurs when the nozzle is stopped in the
event of an alarm.
Reset this alarm, if issued, by moving the nozzle away from the
workpiece in the +Z (+W) direction by jog feed or handle feed, then
pressing the reset button.
Tracing range-over alarm
If the absolute value of a shift exceeds a specified value, the status is
reported to the PMC.
<1> When the trace check mode signal TRCKM=0
When |∆E| ≥ E
OVRS
is sensed, the system stops with an alarm and
the signal TRALM becomes 1.
The value for E
OVRS
is set in parameter No. 15534.
<2> When trace check mode signal TRCKM=1
When |∆E| ≥ E
OVRS
is sensed, the system continues operation
without issuing an alarm, and signal TRERS become and is
maintained at 1 until the amount of shift becomes smaller than
E
OVRS
.
Signal
- Alarm signal
TRALM<F220#7>
[Classification] Output signal
[Function] This signal reports the detection of a tracing over-shift alarm or
tracing range-over alarm to the PMC.
[Output condition] This signal is set to 1 in the following cases:
- When a tracing over-shift alarm is detected
- When a tracing over-range alarm is detected while trace check
mode is off
This signal is set to 0 in the following case:
- When an alarm is reset by pressing the reset button