GSM/GPRS Gateway to Modbus
Remote proces control and supervision
GSM/GPRS RTU2200MB is a terminal unit for remote supervision of geographically distant processes. The unit connects Modbus TCP devices via GSM/GPRS mobile network to management center or to remote users.
By using the OPC Server technology, the obtained data are simply available in various systems such as SCADA, databases and in own applications.
The use of GPRS technology provides the relatively high speed of data transfer. The interconnection between the remote location and the central control and supervisory system is practically uninterrupted and of low cost.
Communication
Remote Terminal unit is an ideal solution for application where wireless connection between a remote process and a central control and supervisory system is needed. It is recommended to use GPRS communication, which is today one of the lowest-cost data transfers and available almost anywhere in the world.
Data are transferred through a GSM/GPRS mobile operator network to internet network and further to the central control and supervisory computer. Data are transferred periodically according to the preset period or at a defined event-alarm.
The RTU can be used for GPRS data transfer and also for transferring short SMS messages that inform users about alarm events at the same time.
This is duplex communication which also signifies a possibility to change the desired setting benchmarks.
The RTU configuration is performed through a simple and user-friendly WEB interface.
- Example: Configuration of remote process control and supervisory system with RTU2200MB terminal units.
OPC and SQL Server
An OPC server is enclosed for communication with remote terminal unit. It provides a simple application connections in the central control and supervisory system with a higher number of terminal units. The technology of OPC server and clients is today one of the most extended and standard ways of linking industrial applications.
The OPC server also synchronizes the real time clock among all units and the central control and supervisory system. It provides time-coordinated data among various processes.
For storing historical data is available SQL Server, which enables the review and processing of received data.
The basic RTU2200MB uses Modbus TCP interface for communication with local devices. In the case of requests for additional or different connections the remote terminal unit can be extended by an additional communication interface. This interfaces are: Bluetooth, Modbus TCP, RS232/RS485, USB, Profibus, DeviceNet, CANopen, CC-link, CompoNet, Control-Net, Modbus RTU, Profinet, EtherNet/IP, EtherCAT and Sercos III.
RTU2200MB Specifications
Digital inputs: 2 inputs 24 VDC
Digital outputs: 2 outputs, 24 VDC, 80 mA
Power supply: 24 V DC in range 10 - 30 V DC
Power consumption: 1,4 W in standby mode, 2 W at emitting
GSM/GPRS range: 850/900/1800/1900 MHz
Antenna connection: SMA
SIM interface: 3 V SIM
Memory card: MicroSD (up to 2 GB)
Ethernet: Auto MDI/MDIX port 10/100
Modbus/TCP: Slave
Temperature: 0 to 50 °C
Assembly: on a standard DIN rail
IP protection: IP 20
Dimensions: 130x45x110 mm (LxWxH)
Weight: 250 g
