
B-64663EN/01 LASER FUNCTION 5.LASER OUTPUT CONTROL
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5.6.3 Output Drop Alarm Signal
Overview
As the mirror of the resonator becomes dirty, laser output will drop.
When the laser oscillator is activated, the power compensation
coefficient is automatically calculated. By specifying this coefficient
for the values specified for output, the reduction in the laser output
can be compensated for.
When the output drops to such a degree that the compensation exceeds
the maximum permissible value, an output drop alarm is displayed on
the CRT screen. The output drop alarm signal (MWRN) is also set to
1.
Pressing the reset key clears the alarm on the screen but does not clear
the output drop alarm signal (MWRN). The signal returns to 0 only
when the mirror is cleaned, such that the output rises to a satisfactory
level.
Signal
- Output drop alarm signal
MWRN<F220#6>
[Classification] Output signal
[Function] Notifies the PMC that the reduction in the laser output exceeds the
maximum permissible value.
[Output condition] The signal is set to 1 when:
- The power compensation coefficient calculated upon activation
of the laser oscillator exceeds the maximum permissible value.
The signal is set to 0 when:
- The power compensation coefficient calculated upon activation
of the laser oscillator is within the permissible range.
Signal address
#7 #6 #5 #4 #3 #2 #1 #0
F220 MWRN