6
Wuhan Raycus Fiber Laser Technologies CO., LTD.
P200MX Pulsed Fiber Laser User Instruction V1
3. Control Interface
The DB25 on the back of the power module is the interface between the control system (e.g.
marking machine) and the laser system. Be sure to connect it reliably before working. The pins
are defined as follows.
Figure 5 Control interface diagram
Table 4 Control Port Pin Definitions
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: output minimum power; 255: output maximum
power
10,13-
15,24,25
Ground
Marking board signal ground (Digital GND)
11,12,16,21
Laser alarms
status
Check the details in Table 6.
17
VCC
+5VDC power supply input.
Providing power for inside isolate chip of DB25 to ensure
that the input and output signal are valid.
18
Pre-emission signal
MO, PA pre-out light signal
High level on, low level off
19
Outgoing light signal
Outgoing light signal
High level on, low level off
20
Frequency signal
Set laser marking frequency, TTL level, 1KHz-4000KHz
22
Red light signal
High level red light is on, low level red light is off
23
/
Reserved pin, customer is not allowed to connect
1.
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 0 to 255
，
corresponding to
the laser output power from 0 to 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 5.
