Wuhan Raycus Fiber Laser Technologies CO., Ltd.
P30MX Pulsed Fiber Laser User’s Guide V1
@2021 Raycus Corporation
3
3.
Control Interface
There are DB9 andDB25 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 to the laser system,please make sure the connection is reliable before operation. Feet of
the DB25 are defined as follows in Figure 12.
Figure 12 Pin definition of DB25 controll interface
Table 4 Definition 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).
10,14
Ground
Digital GND.
11,12,16,21
Laser alarms status
see alarm codes in Table 5.
17
VCC
+5VDC power supply input for independent operation
of the guide laser and PCB
18
EE
Emission Enable (EE) signal.
HIGH(>3V): Emission Enable
LOW or disconnected (<1V): 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.
23
Emergency Off
Emergency Switch Off(Enable: 5V TTL)
9
Obligate Pin
Reserved
a)
The pump current of the diode laser and the laser output power are controlled by setting
the value of Pin1-Pin8 (TTL level). Pin1-Pin8 can be set from 0to 255
，
corresponding
to the laser output power from 0to100
％
(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 5.
b)
Pin 10and Pin 14are all digital GND.
