Description

PURPOSE


Wireless communication device (WCD) is a functionally and structurally complete device for wireless communication between devices with one of interfaces:

  • RS-232
  • RS-485
Wireless communication device for petrol stations

Wireless communication device unit

Click on image to enlarge
  Wireless communication device for petrol stations

Wireless communication device unit with antenna

Click on image to enlarge

WCD is used as a wireless alternative to wired lines and is installed to replace the cables (between external devices) with radio communication. WCD is designed to transmit/receive data via radio channel at a speed of up to 9600 bit/s in the frequency range (2410-2465) MHz with the transmitter output power up to 10 mW.

If cable routing between devices (which usually uses wired communication channels for data exchange) is impossible, then it is necessary to look for other means of communication, other than wired. Wireless transmission of data between devices is one of possible solutions to this problem. WCD is a variation of radio extenders for communication lines that uses RS-232 and RS-485 interfaces.

Wireless communication device for petrol stations



WCD is connected to an external device via communication interface RS-232 or RS-485 (2-wire or 4-wire) and is "transparent" to other devices (additional modification of the device is not required).

After switching-on WCD scans the radio channel on its own, searching for any other WCD devices in the network and establishes contact with them without any commands from the device, connected to WCD. Thus, devices connected to the WCD can exchange data over the air the same way as they did it using wired communication.

WCD operates in a mode of direct access to the radio channel, thus, external devices can exchange data over the radio channel, using their own protocols, addressing, coding etc. Using the protocol of addressing between external devices, WCD can be used to connect a group of external devices into the common network.

WCD is designed for application in different remote control and data collection systems. WCD can be easily integrated into already existing systems without redevelopment of the software.

TECHNICAL CHARACTERISTICS


Power supply voltage +9 … +24 V DC
Maximum power consumption from the power supply in transmission mode 0,36 W
Maximum power consumption from the power supply in idle mode 0,06 W
Transmitter output power, not more than 100 mW
Data transfer baud rate via radio channel Up to 9600 baud
Data transfer rate via interfaces (RS-232, RS-485) with external devices 1200 ... 115200 baud
Operating distance between WCD (indoors) , not more than 100 m
Operating distance between WCD (outdoors on open space) , not more than 1500 m
Operating frequency range 2410 ... 2465 MHz
Connector for external antenna RP-SMA (RSMA)
Interfaces for communication with external devices RS-232
RS-485 2-wire
RS-485 4-wire
Temperature conditions -10° … +45° С
Humidity conditions 5...95 %
Overall dimensions 90 х 180 х 67 mm
Weight 260 g

EXAMPLE OF APPLICATION


Wireless communication device for petrol stations
Click on the scheme to enlarge

ORDER INFORMATION


RS-232 to RS-485 interface converter (RS-232 to RS-485 and backwards)   Wireless communication device with antenna
Order code: WCD-ANT-001

 

See relative products

Automated fuel management system NaftaPanel
Automated fuel management system NaftaPanel
Self-service terminal "Signal-1"
Self-service terminal "Signal-1"


Pumpheads - electronics and indicators for fuel dispensers
Pumpheads - electronics and indicators for fuel dispensers
Price boards for petrol stations
Price boards for petrol stations

Frequently asked questions

1. What is the radio frequency used in wireless communication device and is it allowed to be used on the petrol station?

WCD is designed to transmit / receive data via radio channel at a speed of up to 9600 bit / s in the frequency range (2410-2465) MHz with the transmitter output power up to 10 mW. Due to such a small output power it is allowed to use WCD without certification (2.4 MHz is a free from licensing radio frequency)

2. Where is the WCD installed and does it require ATEX approval?

WCD is to be installed in an explosion safe area (for example inside the dispenser box), since than it does not need ATEX approval.

3. What interfaces does WCD allow to prolong wireless?

These are RS-232 and RS-485 (2 wires) interfaces.