User Manual Q&AAnswer
Nov 21, 2025 - 02:01 PM
**Connecting the HF RFID Reader Module to Host System:**
- The HF RFID Reader Module is connected to the host system via a 2x8Pin connector.
- The pinning of the module to the host connection is as follows:
- **Pin 1:** GROUND (Bidirectional) - Connect to GROUND on the host.
- **Pin 2:** Supply voltage into module (To module) - Provide supply voltage (typical 24V DC, range of 8 … 33V DC) to the module.
- **Pin 3:** GROUND (Bidirectional) - Connect to GROUND on the host.
- **Pin 4:** 5V supply output (To host) - Provide max 100mA supply for the host at 5V.
- **Pin 5:** GROUND (Bidirectional) - Connect to GROUND on the host.
- **Pin 6:** Reserved - Do not connect.
- **Pin 7:** GROUND (Bidirectional) - Connect to GROUND on the host.
- **Pin 8:** UART (To module) - Serial data from host to module at 3.3V LVCMOS.
- **Pin 9:** GROUND (Bidirectional) - Connect to GROUND on the host.
- **Pin 10:** UART direction (To host) - Low = RX/ High = TX is active at 3.3V LVCMOS.
- **Pin 11:** GROUND (Bidirectional) - Connect to GROUND on the host.
- **Pin 12:** UART (To host) - Serial data from module to host at 3.3V LVCMOS.
- **Pin 13:** GROUND (Bidirectional) - Connect to GROUND on the host.
- **Pin 14:** RESET input (To module) - Pull to low level to reset the module at 3.3V LVCMOS.
- **Pin 15:** GROUND (Bidirectional) - Connect to GROUND on the host.
- **Pin 16:** 3V3 supply output (To host) - Provide max 50mA supply for the host at 3.3V.
**Power Requirements:**
- The nominal power supply voltage for the module is 24 VDC, with a voltage range of 8 ... 33 VDC (absolute maximum).
- The supply voltage must be Safety Extra Low Voltage (SELV).
- The current consumption is <=700mA at a nominal voltage of 24 VDC.
- The average power consumption is <=5W.
By following the pin definitions and ensuring the correct power requirements are met, you can successfully connect and power the HF RFID Reader Module in your host system.
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