TechnoTrade VRD-485, Technical Manual

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VRD-485 RFID READER WITH RS-485 INTERFACE
Revision number: 1.01 Review date: 1 December, 2021
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Modbus registers
ADDRESS BYTE DEFAULT VALUE ALLOWED VALUES DESCRIPTION
0x0000
High 0x01 0x00 … 0xFF Reader address
Low 0x03
0x00 … 0xFF
8/9 bits:
- 0x0X: 8 bits, none parity
- 0x1X: 8 bits, even parity
- 0x2X: 8 bits, odd parity
Baud rate:
- 0xX0: 2400 baud
- 0xX1: 4800 baud
- 0xX2: 9600 baud
- 0xX3: 19200 baud
- 0xX4: 38400 baud
- 0xX5: 57600 baud
- 0xX6: 115200 baud
0x0001
High 0x00 - Not used
Low 0x00 0x00 … 0xFF Code of RFID identifier manufacturer
0x0002
High 0x00
0x00 … 0xFF
Code of RFID identifier
Low 0x00
0x0003
High 0x00
Low 0x00
0x0004
High 0x00
0x00 … 0xFF
Red LED
Initial state: 1 – ON, 0 - OFF
Low 0x00 Duration of state x 10 ms
0x0005
High 0x00 Last state: 1 – ON, 0 – OFF
Low 0x00 Duration of state x 10 ms
0x0006
High 0x00 Number of cycles for value change
Low 0x00
0x00 … 0xFF
Green LED
Initial state: 1 – ON, 0 - OFF
0x0007
High 0x00 Duration of state x 10 ms
Low 0x00 Last state: 1 – ON, 0 – OFF
0x0008
High 0x00 Duration of state x 10 ms
Low 0x00 Number of cycles for value change
0x0009
High 0x00
0x00 … 0xFF
Buzzer
Initial state: 1 – ON, 0 - OFF
Low 0x00 Duration of state x 10 ms
0x000A
High 0x00 Last state: 1 – ON, 0 – OFF
Low 0x00 Duration of state x 10 ms
0x000B
High 0x00 Number of cycles for value change
Low 0x00 - Not used
0x000C
High 0x00
0x00 … 0xFF
Response delay in RS-485 interface in 100 μs
intervals
Low 0x00 - Not used