Wuhan Raycus Fiber Laser Technologies CO., Ltd.
20QS+/30QS
+Pulsed Fiber LaserUser’s Guide V1
5
3.
Control Interface
There are DB9 and DB25 interfaces at the rear of the laser. The DB9 is a RS232 interface
only used for debugging, no needs to connect. And DB25 is the joint interface connecting control
system with laser device, please make sure the connection is reliable before operating. Feet of
the DB25 are defined as followsin Fig. 5.
Figure 5. Connect port of controller
Table 3Definition of connect ports of controller
PIN No.
Name
Description
1-8 (D0-D7)
Power Setting
8 bit Parallel port; D0 is minimum bit and D7 is
maximum bit;
Range: 0-255 (hexadecimal: 0X00-0XFF); 0 is
minimum power and 255 is maximum power.
10,13,14,15,24,25
Ground
Digital GND
11,12,16,21
Laser alarms status
see alarm codes in the table below
17
VCC
+5VDC power supply input for independent operation
of the guide laser and PCB.
Maximum current consumption is 0.1A.
18
EE
Emission Enable (EE) signal.
HIGH: Emission Enable
LOW or disconnected: Emission Disable
19
EM
Emission Modulation (EM) input.
HIGH (>3V): Emission ON
LOW or disconnected (<1V): Emission OFF
20
Sync
Pulse Repetition Rate (Synchronization) input, square
wave.
22
Guide Laser signal
Guide Laser (red diode) ON/OFF input.
9, 23
Obligate PIN
Reserved for Raycus only
a)
The pump current of diode laser and the laser output power are controlled by setting
the value of PIN1-PIN8 (TTL level). PIN1-PIN8 can be set from 0
～
255
，
corresponding to the laser output power from 0
～
100
％
(the actual laser power may
not be strictly linear with the setting value). The relationship between PIN value and
output power is shown in Table 4:
