VRD-485 forecourt RFID reader
VRD-485 RFID reader with RS-485 interface is intended for reading RFID contactless identifiers (cards, tags, bracelets, others) of EM-marine type (EM-4100) and Mifare type (UltraLight, Mifare One S50, Mifare One S70, others) and sending it over RS-485 interface.
VRD-485 reader provides reading of the identifier from distance from 50 to 80 mm (depending on the conditions). Reader allows to configure buzzer and 2 color LEDs for indication (green and red).
There are 2 variants of VRD-485 readers:
- VRD-485 intended for reading EM-marine type of identifiers
- VRD-485M intended for EM-marine and Mifare types of identifiers
Technical characteristics #
| PARAMETER | VRD-485 | VRD-485M |
|---|---|---|
| Type of contactless identifiers read | EM-marine (125 kHz) | EM-marine (125 kHz) and Mifare (13.56 MHz) |
| Power supply voltage | 8…14 V DC | |
| Average consumed current | 40 mA | 50 mA |
| Peak consumed current | 80 mA | 100 mA |
| Communication interface | RS-485 | |
| Communication protocol | Modbus | |
| Maximal possible length of communication cable | 1200 m | |
| Dimensions | 95 x 68 x 20 mm | |
| Weight | 0.1 kg | |
| Operation temperature range | -20…+85 deg. C | |
Example of reader installation near fuel dispenser #
RFID reader installation on a fuel dispenser
RFID reader testing on a fuel dispenser
RFID reader installation on a fuel dispenser
RFID reader installation on a fuel dispenser
RFID reader installation on a fuel dispenser
Control over reader #
Data transmission with the VRD-485 reader is performed through the RS-485 interface. The reader control protocol is Modbus RTU.
Communication is done using requests sent by the control system and responses from the reader. It is also possible to operate the reader in a simplified mode, in which it transmits the code of the read RFID identifier without any request sent to it (this is done to simplify the work of programmers when a complex solution to a simple problem is not required).
Configuration utility #
VRD-485 readers have a configuration utility running under Windows OS, which allows to configure:
- to configure reader’s communication address
- to configure reader’s communication parameters
- to search for the reader in case if you forgot its communication address and communication parameters
- to enable and disable automatic tag reading (in this case the reader automatically sends the ID of the tag read to the line, for this feature to work without collisions the reader should be only one on the line)
- to set indication of the reader by its LEDs and buzzer
Order information #
VRD-485 reader for internal installation (EM-Marine contactless identifiers)
Order code: VRD485-INT-001
VRD-485 reader for external installation in waterproof casing (EM-Marine contactless identifiers)
Order code: VRD485-EXT-001
VRD-485M reader for internal installation (EM-Marine + Mifare contactless identifiers)
Order code: VRD485M-INT-001
VRD-485M reader for external installation in waterproof casing (EM-Marine + Mifare contactless identifiers)
Order code: VRD485M-EXT-001
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"VRD-485 forecourt RFID reader"
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