GPRS Router

GPRS_Router_343_resize

Features

  • IndustrialGSM/GPRS850/900/1800/1900 MHz communication device
  • Handling industrial protocols over GPRS
  • Routing of fixed IP addresses
  • Point to point/multipoint operating mode
  • Three different platforms based on different number of inputs/outputs
  • Possibility of using internal MODBUS RTU/ASCII/TCP slave with 6/3/0* analog voltage/current inputs, 6/3/1* relay outputs and 8/4/1* optocoupler inputs (see table of hardware platforms)
  • RS232 DCE serial interface
  • Wide power supply range 8 do 30VDC
  • DIN 35mm rail mounting

 

Description


GPRS Router is industrial GSM/GPRS communication device which uses GSM network for transferring commands, alarms and data. It is based on Simcom SIM900 module with integrated TCP/IP stack. Basic function of device is to manage transfer of industrial protocols over GPRS and to connect remote PLCs to SCADA programs over the VPN/GPRS network. Therefore, in addition to classic GPRS terminals, this device enables routing of fixed IP addresses and sending data from remote locations to centre. Currently, GPRS Router supports Modbus  and OMRON Hostlink protocols, but it can be adjusted to support other industrial protocols based on asynchronous serial communication. It is also possible to configure the device as MODBUS slave by alocating internal address. Functionality of GPRS router is available in three different platforms, 110, 343 and 686, with different hardware resources, shown in Table of hardware platforms, so that device can be used as RTU with 6/3/0* analog voltage/current inputs, 6/3/1* relay outputs and 8/4/1* optocoupler inputs. Device has wide range of power supply, from 8 to 30V DC and it is suitable for DIN 35mm rail mounting.

 

Application

GPRS Router handles transfer of asynchronous serial data between two devices in point to point configuration, or between more than two devices in star configuration (replacement for master-slave RS485 network). Connection to GPRS Router is provided via integrated RS232 interface in DCE configuration. Device can be configured to work as master or slave via command mode. Master can establish connections with slave modules by using dynamic route selection from routing table. Slave modules can have one or more fixed routes to master module (also placed in routing table), selectable by setting code combination on four digital inputs. By alocating internal address to slave device, internala MODBUS slave is activated. In other words, slave is then behaving like RTU with 6/3/0* analog voltage/current inputs, 6/3/1* relay outputs and 8/4/1* optocoupler inputs. Device state is indicated by four LED diodes placed between RS232 and GSM antenna connectors.

* TABLE OF HARDWARE PLATFORMS
Platform Relay outpouts Optocoupler inputs Analog inputs
110 1 1 0
343 3 4 3
686 6 8 6

 

 

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Technical specifications
GSM

SIMCOM SIM900D

Quad-Band GSM/GPRS 850/900/1800/1900 MHz

Compliant with GSM phase 2/2+ standard
Output power Class 4 (2W at 850/900MHz); Class 1 (1W at 1800/1900MHz)
SIM card Mini SIM, 1.8V/3.0V
Serial interface RS232 ITU-T V.24 / V.28, DCE configuration, DB9 female
Serial baud rate in command mode 9600 bps, 8N1
Analog inputs

6/3/0* inputs with conjoint bulk, with adjustable software:

- current inputs 0-20mA or 4-20mA

- voltage inputs 0-5V or 0-10V
Digital inputs

 8/4/1* inputs with conjoint bulk, separated with optocouplers

Nominal 12V DC – 24V DC max 30V DC

Logic 0 – Input voltage < 4V DC

Logic 1  - Input voltage >5V DC

Counting mode: 0 - 65535 pulses 
Relay outputs

 6/3/1* relays with NO contacts, 5A, 30V DC / 250V AC

Antenna connector SMA female, GSM 50Ω antenna with 3m cable included
LED indication Power ON, GSM ON, Ready, Busy
Power supply DC power supply, from 8 to 30V
Power supply connector Pluggable screw clamp, 2.5mm2
Power consumption Standby 0.2W, max 3W
Dimension 70 x 85 x 58 mm (without connection blocks)
Weight cca 150g
Protection IP40
Temperature range -20°C to +75°C, 0 to 95% RH (non condensed)
Mounting

DIN 35mm rail

* see Table of hardware platforms

 

8/4/1* inputs with conjoint bulk, separated with optocouplers

Nominal 12V DC – 24V DC max 30V DC

Logic 0 – Input voltage < 4V DC

Logic 1  - Input voltage >5V DC

Counting mode: 0 - 65535 pulses