Product Descriptions
Supply voltage: 3-5V
Power supply current: 7mA
Wiring:
Red... VCC
Black... GND
Yellow... RC (Half Port UART TTL-Rx/I2C.. SCL)
Self color... TD (half port UART TTL Tx/I2C.. SCL)
The module defaults to serial UART mode and automatically outputs data. When the PS solder joints on the PCB are soldered, it is in I2C mode.
1. Module internal registers:
| 0x00(Reading and writing) | 器件 ID 地址 Device ID address | 1~254;0為廣播地址;默認(rèn)為ID:0xA4，與8位 ⅡC 地址相同，所以該地址必須為2的倍數(shù)。 1~254; 0 is the broadcast address; The default ID is 0xA4, which is the same as the 8-bit IIC address, so this address must be a multiple of 2. |
| 0x01(Reading and writing) | 波特率設(shè)置 Baud rate setting | 0-7:2400 4800 9600 19200,38400,57600.115200,230400 |
| 0x02(Reading and writing) | 更新速率 Update rate | 0: 1hz;1:2hz;2:5hz;3:10hz |
| 0x03(Reading and writing) | 輸出模式 Output mode | 0:連續(xù)輸出;1:查詢輸出 0: Continuous output; 1: Query output |
| 0x04(Reading and writing) | 輸出格式 Ooutput format | 0:十六進(jìn)制;1:字符; 0: Hexadecimal system; 1: Characters; |
| 0x05(Reading and writing) | 保存設(shè)置 Save Settings | 0x55:保存當(dāng)前配置;0xAA:恢復(fù)出廠設(shè)置 0x55: Save current configuration; 0xAA: Factory reset |
| 0x06(Reading and writing) | TO off溫度偏移 TO off temperature offset | 0-255，默認(rèn)值100=0偏移，TO補(bǔ)償= (TO_off-100)/10 0-255, default value 100=0 offset, TO compensation= (TO_off-100)/10" |
| 0x07(Reading and writing) | E 發(fā)射率 E emissivity | 1~100(對(duì)應(yīng) 0.01~1.00) |
| 0x08(Read) | TO(目標(biāo)溫度)高8位 TO (target temperature) high by 8 digits | 0~255 |
| 0x09(Read) | TO(目標(biāo)溫度)低8位 TO (target temperature) is 8 digits lower | 0~255 |
| 0x0a(Read) | TA(環(huán)境溫度)高8位 TA (ambient temperature) high by 8 digits | 0~255 |
| 0x0b(Read) | TA(環(huán)境溫度)低8位 TA (ambient temperature) is 8 digits lower | 0~255 |
| 0x0c(Read) | BO高8位 BO high 8 digits | 0~255 額溫轉(zhuǎn)換體溫值高8位 0-255 forehead temperature conversion with a body temperature value 8 digits higher |
| 0x0d(Read) | BO低8位 BO low 8 digits | 0~255 額溫轉(zhuǎn)換體溫值高8位 0-255 forehead temperature conversion with a body temperature value 8 digits higher |
| 0x0e(Reading and writing) | 芯片型號(hào) Chip model | 0~3 |
| 0x0f(Read) | 固件信息 Firmware information | 0~255 |
Serial port function (send/receive mode):
Frame description:
| 地址 Address | 功能碼 Function code | 數(shù)據(jù) Data | 校驗(yàn)和 Checksum |
| 1 byte | 1 byte | N byte | 前字節(jié)校驗(yàn)和低8位 The lower 8 bits of the first byte checksum |
2. Module support function code:
| 寫(xiě)單個(gè)寄存器 Preset Single Register | 0x06 |
| 讀寄存器 Read Register | 0x03 |
3. Module response time
| 波特率=9600 Baud rate=9600 | 約為 10ms |
| 波特率=115200 Baud rate=115200 | 約為 1ms |
IIC function:
This function requires welding PS solder joints. The IIC address is the value of the 00 register, with a default of 4. The IIC rate needs to be less than 400K.
The number of registers written in a single module is 1. Write the timing sequence as follows, which requires more than 4us of time after sending the device address
| Start | Address | ACK | reg | ACK | Data | ACK | Stop |
| 起始 Start | 0XA4 | 模塊 Module | 0x07 | 模塊 Module | 0x57 | 模塊 Module | 結(jié)束 End |
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