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參數(shù)資料
| 型號： | RH-02 |
| 英文描述： | THERMOMETER/HYGROMETER PC BASED |
| 中文描述： | 溫度計/濕度計基于PC的 |
| 文件頁數(shù)： | 9/11頁 |
| 文件大小： | 38K |
| 代理商： | RH-02 |
The information presented here is necessary only if you wish to connect the RH02 to the PC in some unusual
way (for example, via a radio modem).
The RH-02 uses the following RS232 data lines (pin connections as on RH-02)
Pin
Name Usage
3
TX
Data from the PC to the RH-02
2
RX
Data from the RH-02 to the PC
7
RTS Held at a positive voltage (>7V) to power the RH-02
5
GND 0V line
4
DTR Held at a negative voltage (<-7V) to power the RH-02
The driver powers up the RH-02 by enabling RTS and disabling DTR to provide the correct polarity power
supply. If these are set incorrectly no damage will occur to either PC or RH-02.
Protocol
The RH-02 operates at 2400 baud with 1 stop bit and no parity.
The driver controls the RH-02 using the following sequence
1. Switch RTS on and DTR off to provide power.
2. Wait for more than 1 second for the RH02 to settle
3. Send an single control byte to the RH02
4. Wait for a response from the RH02
Steps 3 and 4 are repeated for each measurement.
The RH02 signals the end of conversion by sending a block of bytes. No data should be sent to the RH02
during the conversion, as it may be lost or corrupted.
The RH02 accepts the following commands:
Command
0x01
0x02
0x04
0x05
Function
Response length
2
32
2
2
Response
RH02 Version
RH02_INFO (see below)
Temperature reading
Humidity reading
The RH02 version response is made up of a 2 (for RH02) followed by the version number (currently 1).
The RH02_INFO block contains the following information:
typedef struct
{
unsigned short checksum;
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| RH02_1 | 制造商:DIODES 制造商全稱:Diodes Incorporated 功能描述:0.5A SURFACE MOUNT GLASS PASSIVATED FAST RECOVERY BRIDGE RECTIFIER |
| RH0202-000 | 制造商:TE Connectivity 功能描述:FOSC-ACC-C-TRAY-24 制造商:TE CONNECTIVITY 功能描述:FOSC-ACC-C-TRAY-24 |
| RH025 | 制造商:VISHAY 制造商全稱:Vishay Siliconix 功能描述:Wirewound Resistors, Military, MIL-PRF-18546 Qualified, Type RE, Aluminum Housed, Chassis Mount |
| RH025100R0FC02 | 功能描述:線繞電阻器 - 底架安裝 25watts 100ohms 1% RoHS:否 制造商:Vishay/Dale 電阻:7 Ohms 容差:1 % 功率額定值:100 W 溫度系數(shù):50 PPM / C 系列:RH 工作溫度范圍:- 55 C to + 250 C 尺寸:46.02 mm Dia. x 46.02 mm W x 88.9 mm L x 44.45 mm H 封裝:Bulk 產(chǎn)品:Power Resistors Wirewound Aluminum Housed |
| RH025100R0FE02 | 功能描述:線繞電阻器 - 底架安裝 25watts 100ohms 1% RoHS:否 制造商:Vishay/Dale 電阻:7 Ohms 容差:1 % 功率額定值:100 W 溫度系數(shù):50 PPM / C 系列:RH 工作溫度范圍:- 55 C to + 250 C 尺寸:46.02 mm Dia. x 46.02 mm W x 88.9 mm L x 44.45 mm H 封裝:Bulk 產(chǎn)品:Power Resistors Wirewound Aluminum Housed |
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