The **TW-R16-K2** is a specialized RFID read/write head module, primarily manufactured by **Turck**. It is designed for industrial automation and tracking systems using High Frequency (HF) technology. Below is a detailed breakdown of its electronic components and specifications. --- ### 1. General Specifications The TW-R16-K2 is a cylindrical RFID member of the BL ident® family, specifically optimized for integration into conveyor systems or tool identification. | Feature | Specification | | :--- | :--- | | **Operating Frequency** | 13.56 MHz (HF) | | **Housing Design** | Cylindrical/Threaded (M16 × 1) | | **Mounting Conditions** | Non-flush | | **Standard Compliance** | ISO 15693 | | **Protection Class** | IP67 (Dust tight and water immersion) | --- ### 2. Core Electronic Components The device functions through three primary internal electronic sections: #### A. The Inductive Antenna (Coil) * **Purpose:** To transmit energy via an electromagnetic field to the passive RFID tag and receive data back. * **Design:** A fine copper winding located at the front of the M16 housing. * **Reading Distance:** Due to its small form factor (16mm), the reading range is typically between **15mm to 20mm**, depending on the tag size used. #### B. Modulation/Demodulation Circuitry * **Transmission:** Uses Amplitude Shift Keying (ASK) to send commands to the tag. * **Reception:** Decodes the "load modulation" from the tag to interpret the stored data. #### C. Interface Electronics * **Connection Type:** Hard-wired cable (typically 2m length). * **Data Transfer:** It does not operate as a standalone logic controller; it must be connected to an **RFID Interface Module** (like Turck’s BL20 or BL67 gateways). * **Power Supply:** Provided through the interface module (usually 24V DC logic). --- ### 3. Electrical Characteristics | Parameter | Value | | :--- | :--- | | **Data Transfer Rate** | Up to 26.5 kbps | | **Radio Interference** | According to EN 300330 | | **Housing Material** | Plastic (PBT-GF30-V0) | | **Operating Temperature** | -25°C to +70°C | --- ### 4. Integration Diagram (Logic Flow) The electronic signal path follows this simplified architecture: ```mermaid graph LR A[Power Supply/PLC] --> B[RFID Interface Module] B --> C[TW-R16-K2 Internal Coil] C -- 13.56MHz Field -- > D[RFID Tag/Data Carrier] D -- Backscatter -- > C C --> B B --> A ``` --- ### 5. Key Application Notes * **Metallic Interference:** Since this is a "Non-flush" module, the electronic field is sensitive to surrounding metal. There should be a metal-free zone around the head to prevent detuning of the internal antenna. * **Multi-tag Capability:** While the electronics support ISO 15693 (which allows for multiple tags in the field), the small diameter of the TW-R16-K2 usually limits it to reading one tag at a time in high-precision environments.