Notice:If you don''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''''t understand“Basic circuit knowledge”,“Serial port application”with“Hexadecimal”If you have professional knowledge, please purchase with caution.
If you need technical support, you need to charge a certain service fee ranging from 100-1000 yuan.
Support W7/W10 system, Also supports most Linux system ,
(Generally Linux system on Android)
That is: comes with or can be installed CH340 Driver can be used
The USB to RS232 transfer is omitted, and it can be directly connected to the USB interface of the computer. It also saves the external power supply.
New product Small USB port, low price33 yuan/block
![](https://img.alicdn.com/imgextra/i4/1123006751/O1CN01fSxqsW1zk0XXNILko_!!1123006751.jpg)
Note: Need to install CH340 driver. It is actually the serial port to collect data.
1. Power supply: USB2.0/USB3.0;
2. Power consumption:<0.5W;
3. Communication interface: USB interface Use CH340C to transfer COM port
4. The baud rate is 9600bps, and the data format is“n,8,1”;
5. 4-way switch input: the input level range is 0~30V;
6. Active or passive empty contact input; logic level 0: 0~+0.5V or short circuit, logic level 1: +3V~+30V or open circuit.
7. Size: 60mm*16mm, the highest point is 10mm
Working environment: working temperature: -20~70℃;
Storage temperature: -40~85℃;
Relative humidity≤73%, 86~106kPa, no corrosive gas location;
During serial communication, there is a sending indicator,
4-input switch value acquisition module
The default instruction is hexadecimal(Hex) 55 Baud rate 9600bps
When there is no input signal for 4 inputs
Host computer sends hexadecimal(Hex) TX: 55
Module returns Hexadecimal(Hex) RX:0F Bit7 ~ Bit0 of 8-bit binary value
One byte in hexadecimal notation, the highest bit is BIT7, followed by BIT6, BIT5, BIT4, BIT3, BIT2, BIT1, BIT0.
See the characters on the back of the board S3, S2, S1, S0, G correspond to
BIT4-BIT7 are invalid.
S3-BIT3.
S2-BIT2.
S1-BIT1.
S0-BIT0.
G--public
Automatic transmission: Any change in the state of the 4 input terminals will automatically send the current state of the 4 ports.
Can send two hexadecimal bytes“5A 5D”: Turn on the automatic sending function
Host computer sends hexadecimal(Hex) TX: 5A 5D
Module returns Hexadecimal(Hex) RX:AD
Can send two bytes“5A 50”: Turn off the automatic sending function
Host computer send TX: 5A 50
Module returns RX:A0
Switch input description
1. Passive empty contact input(Refers to mechanical switches, buttons, buttons, relay contacts, etc.)
One point of the switch is connected to the common end(G)-black line.
The other point is connected to one of the lines S0-S3.
2. Active input(Refers to NPN three-wire proximity switch, photoelectric switch, etc.)
A, active switch
The negative wire of the switch Public(G)-Connect the black wire.
The signal wire of the switch is connected One of the lines S0-S3.
B. Equipment output signal
When the signal end is high The voltage between the negative pole of the power supply is greater than 3V
When the signal terminal is low The voltage between the negative pole of the power supply is less than 0.5V
3. If using a PNP sensor or a signal that changes in high level and in the air.
Please leave a message,(Connect PNP sensor), The price plus 5 yuan / block
Just let the customer service change the price,
More than 100 yuan, you can add functions:
1. The baud rate can be(1200, 2400, 4800, 9600, 19200bps)Can be customized
Application field
l Industrial field control
l Remote monitoring and data collection
l Computer room monitoring
l Intelligent Building
l Electric power communication
l Warehousing and monitoring
l Electronic product manufacturing
l Food machine and beverage industry
Default Express: Shentong Express
Below 200 yuan, plus 10 yuan, you can open a general ticket
200 yuan or more Add 5 points, you can open a general ticket
Cape ticket above 2,000 yuan plus 3 points
More than 2,000 yuan, plus 13 points, can open a 13% value-added tax invoice.
Can accumulate if the invoiced amount cannot be met.
On normal working days, if the order is placed and paid before 16:00, it will be shipped the same day, and if the payment is made after 16:00, it will be shipped the next day.
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