25
Chapter 5 Operation Guide
laser safety circuit will substitute the missing pulses or limit the PRR.
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The laser emission is not allowed simultaneously with the guide laser. The
BS is blocked internally during the guide laser operation. If pin 19 is set HIGH
but the guide laser is on, the laser will not emit light, unless the guide laser is
switched OFF. The MO is able to be switched ON or OFF during the guide laser
is ON.
(7
）
Pin 23 is the “Emergency stop” input. It should be set to HIGH for normal
operation. In case of dropping this pin to LOW state (even for a short period of
time), the laser automatically switches OFF (similar to the state when both MO
and BS are OFF). It is necessary to drop both MO and BS to LOW (if they were
HIGH) before restarting the laser.
3-Laser Operation
1.Steps
All control pins are TTL compatible, unless otherwise noted in the pin
description. For the interface designs level ranges of the TTL standard should be
taken into consideration.
(1) Remove the protective cap from the laser output head;
(2) Connect the control system with the laser DB25 pin interface. For the pins to
be used, refer to 5.2.2 Digital Control Interface (DB-25) Function Description;
(3) Recommended initial state of control needle:
Pin18,19, pin is low
Pin20 repetition frequency is within the specified range
(4) Connect the 24VDC power supply to the laser power cable (+ 24V
corresponds to red, the ground wire is connected to yellow, and the negative
pole is connected to the black wire);
(5) After the laser is powered by 24VDC, it can be operated.
CAUTION
：
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Please allow 24VDC main power before initializing the control signal.
(6) Set the emergency stop input (Pin23) to H level;
