Shenzhen RelFar Intelligent Technology Co., Ltd.
6.8 CN4 reserved serial interface
CN4 reserved serial port interface is a 4-pin green terminal without wiring.
Chart 6.8.1 shows the definition of CN4 interface.
Table 6.8.1
Pin Signal
1
OVCC
2
TXD
3
RXD
4
GND
Definition
+24V power supply, 500mA
TXD signal
RXD signal
GND
Description
Power supply
Serial communication TXD signal
Serial communication RXD signal
6.9 CN6 external start and safety lock interface
The CN6 interface is a 4PIN green terminal. Table 6.9.1 shows the
definition of CN6 interface.
Table 6.9.1
Pin
Signal
Definition
Instruction
Generally connecting to the start button switch on
1
GND
Reference ground
the welding head-
External start switch Generally connecting to the start button switch on
2
Start
input
the welding head+
The pin must be connected to the safety clamp and
Safety clamp signal
3
Injector
the safety clamp shall be clamped onto the metal
input
material before welding.
The pin must be connected to the nozzle of the
Safety lock signal
4
Interlock
handheld head. The nozzle touches the metal
input
material at the moment of welding.
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