VRD-485 forecourt RFID reader
VRD-485 RFID reader with RS-485 interface is intended for reading RFID contactless identifiers (cards, tags, others) and sending it over RS-485 interface.
VRD-485 reader provides reading of the identifier from distance from 10 to 90 mm (depending on the conditions). Reader allows to configure buzzer and 2 color LEDs for indication (green and red).
Technical characteristics #
|Type of contactless identifiers read||EM-Marine (optionally Mifare + EM-Marine)|
|Power supply voltage||8…14 V DC|
|Average consumed current||40 mA|
|Peak consumed current||80 mA|
|Maximal possible length of communication cable||1200 m|
|Dimensions||95 x 68 x 20 mm|
|Operation temperature range||-20…+85 deg. C|
Example of reader installation near fuel dispenser #
Control over reader #
Data transmission is performed through the RS-485 interface in asynchronous mode at a baud rates from 2400 to 115200 bit/s. Port setting are: 1 start bit, 8 data bits, parity can be configured, 1 stop bit. Communication exchange is organized in packets according to the ‘Master-Slave’ principle. Command packets are transmitted from the control device. Reply packets are sent from the reader to the control device.
The reader control protocol is Modbus, but it is also possible to operate the reader in a simplified mode, in which it transmits the code of the read RFID identifier without following the Modbus protocol immediately upon reading the card. This is done to simplify the work of programmers when a complex solution to a simple problem is not required.
Order information #
Order code: VRD485-INT-001
Order code: VRD485-EXT-001
Order code: VRD485-INT-002
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"VRD-485 forecourt RFID reader"
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