GPRS Module Automatic Meter Reading System For Wireless Data Collecting RS232
GPRS Module in Automatic Meter Reading System for Wireless Data Collecting RS232
Introduction of RS232 / RS485 GSM Modems
This is a RS232/RS485 to gprs dtu, used for data transparent transmission. GPRS232-730 GPRS DTU (Data Transfer Unit) is a wireless terminal equipment which can convert serial data to IP data or convert IP data to serial data through gprs network. 730 is based on USR-GM3. Clients can use this product to realize bidirectional transparent transmission from serial port to network through simple AT command.
Features of RS232 / RS485 GSM Modems
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Support RS232/RS485 interface, choose before purchase;
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Support GSM850/900,DCS1800/1900
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Support GSM/GPRS and 2G/3G/4G card, but don’t support 3G/4G network
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Support TCP and UDP
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Support register packet and heartbeat packet
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Support remote configuration via SMS
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Support multi work modes : SMS transmission mode,network transmission mode and HTTPD mode
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Support basic instruction set and extension instruction set
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Support class RFC2217, can dynamically modify serial parameter of module via network
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Support hardware flow control RTS/CTS
Function Structure of Low Power Gsm Modules
Application Field of RS232 / RS485 GSM Modems
- Power industry: power remote meter reading, substation monitoring, power line monitoring
- Municipal industry: street lamp remote monitoring management, pipe network remote monitoring, urban energy consumption monitoring
- Oil industry: remote monitoring of oil-gas well, GPRS remote oilfield automation detection monitoring system, Gas pipe network monitoring system solutions
- Environmental protection industry: pollution sources monitoring, atmospheric environment monitoring, noise monitoring, dust monitoring
- Agricultural application: greenhouse remote monitoring and management, aquaculture monitoring management, agricultural water pump monitoring management
Application of RS232 / RS485 GSM Modems
1.Application in public server
2.Use network to extend serial communication distance
3. Server transit mode
Parameter
| Network | |
| Standard | GSM / GPRS |
| Rate | 14.4 Kbps ~ 57.6 Kbps |
| Standard Frequency Range | 850/900/1800/1900MHz |
| GPRS Multi-slot Class | GPRS Class 10 |
| GPRS Terminal Device Class | Class B |
| GPRS Coding Schemes | CS1 ~ CS4 |
| Max Launch Power | GSM900 class4 (2W), DCS1800 class1(1W) |
| Application | GSM standard AT instruction set / USR extension AT instruction set / data transmission / SMS transmission |
| Network Protocol | TCP, UDP, DNS, Http |
| Network Link Count | 4 |
| Disconnection Buffer | 4 x 15K bytes |
| Network Receive Buffer | 4K byte |
| Serial | |
| Port Number | 2 (1*RS-232, 1*RS-485, can not work at the same time) |
| Interface Standard | RS-232: DB9 cellular type, RS-485: 2 wire (A+, B-) |
| Data Bit | 5, 6, 7, 8 |
| Stop Bit | 1, 1.5, 2 |
| Check Bit | None, Even, Odd |
| Baud Rate | UART: 2400 bps ~ 921600 bps |
| Flow Control | RTS/CTS |
| Receive Buffer | 4K byte |
| RS-485 Pull-up and Pull-down Resistor | 2.2 KΩ |
| Device Interface | |
| Antenna Interface | 50Ω/SMA-K (female terminal) |
| SIM Card | 1.8V / 3V |
| Speech Interface | Null |
| Software | |
| Virtual Serial(USR-VCOM) | Windows 2000 or higher (32 bit/64 bit) |
| Configuration | Serial AT command, network AT command, SMS AT command |
| Basic Parameter | |
| Size | 80x 84 x 25(mm) |
| Operating Temp. | -25 ~ 85°C |
| Storage Temp. | -40 ~ 125°C |
| Input Voltage | DC 9 ~ 24 V |
| Working Current | Average: 22 ~ 45mA, Max: 201mA |
| More | |
| Warranty | 2 years |
| Accessory | 12V1A power, serial line, GPRS sucker antenna |
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