Page 16 of 31

2.4 HMI
BWT20 Qilin Wobble Handheld Laser Welding Head
The HMI interface is a DB9 black plug through which the
motherboard supplies and communicates to the HMI.
Figure 2.4 Schematic diagram of the HMI
Table 2.4 is the definition of the HMI interface.
Table 2.4
Pin Signal
Definition
Description
1
24V
Power supply output, 500mA HMI supply electricity
2
GND
Power supply output place
Power reference
3
TXD
The sender of the HMI
Serial port communication with the TXD signal
4
RXD
Receiver end of the HMI
Serial port communication with the RXD signal
2.5 Laser device decoding interface
The LASER RS232 interface is a board card and a laser communication port.
Pin
Signal
Definition
Description
Laser and board card communication Communication with the laser source
1
DB9
interface
and unlock it
Shenzhen Qilin Laser Application Technology Co., Ltd.
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