Wuhan Raycus Fiber Laser Technologies Co., Ltd.
User Guide of RFL-P500H
19
Table 8
PIN Definition of Serial Communication
Pin
Name
Description
2
Serial input
The setting of the data bits synchronize with
rising edge of the serial clock.
3
Serial clock
Serial clock, frequency range: 10KHz
～
100KHz.
14
GND
Digital GND
16
SO
The output data bits synchronize with rising edge
of the serial clock.
22
Pulse duration control
Enable
High
：
Enable
，
Pin2 and Pin3 control the pulse
duration;
Low or disconnected
：
Disable
Table 9 Command format of setting the laser pulse duration
Frame
（
1byte
）
Command word (1 byte)
Pulse duration(2byte)ns
0xA5
0x01
Big Endian
Table 10 Response format of setting the laser pulse duration
Frame
（
1byte
）
Pulse duration(2byte)ns
0xA5
Big Endian
1)
Marking machine sends the command to the laser machine by the Pin2 on
the DB25 port, meanwhile sends the clock signal to the Pin3. The
comment is the binary form, and delivers the most significant bit as the
priority.
2)
The order structure from marking machine to the laser machine is:
0xA5+instruction code.
3)
0xA5
（
A5h
）
is the comment byte to active the laser pulse duration
control port. 0xA5 and the following data will be directly sent as the serial
input form to the Pin2 on the DB25 port.
4)
The input data length is 4 bytes: the first byte of instruction code should
be 0x01
（
01h
）
,the second byte and the third byte are the value of the
