Shenzhen RelFar Intelligent Technology Co., Ltd.
6.6 CN3 temperature sensor interface
The temperature sensor interface CN3 is a 4PIN green terminal. Table
6.6.1 shows the definition of temperature sensor. The user directly inserts
the supporting connection line with terminal.
Table 6.6.1
Pin
Signal
Definition
1
+5V_out Sensor P interface
2
Light Sensor L interface
3
Temp Sensor T interface
4
GND Sensor G interface
Instruction
+5V power supply, maximum output is 500mA
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—
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6.7 HMI touch screen interface
The HMI interface is a 6PIN green terminal and power supply to and
communication with HMI by the mainboard are performed via the port.
Table 6.7.1 shows the definition of HMI interface.
Table 6.7.1
Pin
Signal
Definition
Instruction
1
OVCC +24V power output, 500mA
Panel power supply
Connecting to the HMI sending Serial port communication TXD signal
2
TXD_HMI
end
Connecting to the HMI
3 RXD_HMI
receiving end
Serial port communication RXD signal
Reserved communication
RS232 reserved communication interface
4
TXD
interface
Reserved communication
RS232 reserved communication interface
5
RXD
interface
4
GND
Power reference ground
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