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In automated automotive electronics manufacturing, reliable fixture identification is essential for maintaining production traceability and ensuring accurate inspection data collection.
In this project, an automotive electronics manufacturer operates a fully automated testing line for in-vehicle display screens. The production line consists of six testing stations, including vibration testing, electrical performance testing, touchscreen testing, and white balance calibration.
Reusable metal fixtures transport display screens between stations. Each fixture needs to be identified automatically so that inspection results and process parameters can be associated with the correct production carrier.
To achieve this, Superisys implemented an industrial HF RFID identification system using the RF-HZ50L-TP reader and RF-HZMTY300M-2K anti-metal RFID tag.
This case study focuses on the hardware selection, installation configuration, communication architecture, and integration considerations behind the RFID implementation.
The production environment presented several technical requirements for RFID integration.
1. Metal Fixture Identification
The RFID tags needed to be installed directly underneath metal fixtures. Conventional RFID tags may experience performance degradation when mounted directly on metal surfaces.
An industrial anti-metal RFID tag was therefore required to provide reliable identification in this installation environment.
2. Limited Installation Space
The RFID readers had to be installed inside the testing equipment, facing the bottom of the fixtures.
The available installation space was limited, making reader dimensions, mounting position, and cable routing important considerations.
3. Accurate Identification at Each Workstation
The production line contains six testing stations. Each station needs to identify the fixture arriving at its designated position.
The RFID configuration must help prevent unintended identification of nearby fixtures or adjacent workstations.
4. PLC and Equipment Communication
The RFID reader needed to communicate with the existing equipment control system without requiring major changes to the production line architecture.
Ethernet communication and Modbus TCP support were important selection criteria.
5. Industrial Environmental Requirements
The equipment operates in a manufacturing environment with metal structures, mechanical vibration, and potential exposure to dust and oil contamination.
The RFID hardware therefore needed suitable industrial protection and operating temperature specifications.
For this application, Superisys selected a 13.56 MHz HF RFID system supporting ISO 15693.
The main consideration was the required short-range identification between each reader and the RFID tag installed underneath the fixture.
Compared with long-range identification applications, this setup required controlled, localized reading at a fixed workstation.
Key reasons for selecting HF RFID included:
Controlled Reading Area: Short-range identification helps limit unintended reads from nearby fixtures.
Metal-Mounting Compatibility: An anti-metal RFID tag can be used for installation on the metal fixture.
Industrial Communication: Ethernet and Modbus TCP support integration with industrial control systems.
Compact Installation: The reader can be installed inside the testing equipment, directly beneath the fixture identification position.
The selection of HF RFID was based on the actual installation distance, fixture structure, and workstation layout rather than simply maximizing reading range.
The RF-HZ50L-TP is an industrial HF RFID reader designed for automated identification applications.
Technical Specifications
Operating Frequency: 13.56 MHz
RFID Protocol: ISO 15693
Reading Distance: 0–80 mm
Communication Interface: Ethernet
Communication Protocol: Modbus TCP
Protection Rating: IP67
Engineering Considerations
Installed inside the testing equipment, directly beneath the fixture positioning area.
Provides short-range identification for localized workstation reading.
Supports Ethernet communication through Modbus TCP.
IP67 protection supports installation in demanding industrial environments.
One reader is deployed at each of the six testing stations.
The reader communicates with the equipment control system, providing fixture identification data for subsequent production process management.
The RF-HZMTY300M-2K is an industrial HF RFID tag designed for metal fixture identification.
Technical Specifications
Memory Type: FRAM
Memory Capacity: 2,000 bytes
Housing Material: PPS
Protection Rating: IP67
Operating Temperature: -40°C to +70°C
Mounting: Screw mounting
Installation: Suitable for metal-surface and flush-mounting applications
Engineering Considerations
Installed underneath the metal fixture using mechanical fasteners.
Provides a unique UID for individual fixture identification.
FRAM supports repeated read/write operations and is suitable for applications requiring frequent data updates.
PPS housing and IP67 protection support industrial operating conditions.
The unique UID is used as the primary identification reference for each fixture.
The installation configuration is designed around the existing fixture positioning mechanism.
Reader Installation
Each RF-HZ50L-TP reader is mounted inside the corresponding testing station, facing the RFID tag installed on the fixture bottom.
The reader and tag are positioned to establish a controlled identification area when the fixture reaches its designated position.
Tag Installation
The RF-HZMTY300M-2K tag is mechanically fixed underneath the metal fixture.
The installation position is selected to maintain the required reading distance and alignment with the reader.
Six-Station Deployment
The production line uses six independent RFID identification points, with one reader installed at each testing station.
This configuration allows each station to identify the fixture locally as it arrives.
The final mounting distance and alignment should be validated against the actual fixture structure and equipment layout.
The RF-HZ50L-TP communicates with the equipment control system through Ethernet using Modbus TCP.
The integration process can be divided into the following steps:
Step 1 – Fixture Positioning
The fixture carrying the display screen arrives at a testing station and is positioned in the designated identification area.
Step 2 – RFID Tag Identification
The RF-HZ50L-TP reader identifies the ISO 15693 tag and obtains its unique UID.
Step 3 – Data Communication
The reader transmits the identification information to the equipment control system through the Ethernet connection using Modbus TCP.
Step 4 – Production Data Association
The PLC or upper-level production software uses the fixture UID as the identification reference and associates it with the corresponding inspection process.
Step 5 – Inspection Result Recording
After the testing operation is completed, the control system records the inspection result and relevant process parameters against the fixture identity.
Step 6 – Next Workstation
When the fixture moves to the next station, the corresponding RFID reader identifies it again, allowing the production system to continue collecting process information.
The resulting data structure can be represented as:
Fixture UID → Workstation ID → Inspection Result → Process Parameters → Production Record
The RFID hardware provides identification and communication. Inspection logic, data association, production statistics, and historical record management are handled by the customer's PLC and/or upper-level software.
When integrating RFID into automated manufacturing equipment, several factors should be evaluated during system design and commissioning.
1. Reading Distance and Alignment
The distance between the reader and tag directly affects identification performance.
The installation should be tested using the actual fixture, mounting structure, and operating position rather than relying only on the reader's nominal reading range.
2. Metal Interference
Metal structures can influence RFID performance.
Using a dedicated anti-metal tag and validating its mounting position are important for reliable identification.
3. Adjacent Workstation Interference
Where multiple RFID readers are installed along the same production line, their reading areas should be evaluated.
Reader positioning, identification timing, and workstation control logic should be designed to minimize unintended reads from neighboring fixtures.
4. PLC Communication and Data Mapping
Before commissioning, engineers should verify the Modbus TCP communication configuration, reader addressing, data mapping, and UID acquisition process.
Each reader should be assigned and managed according to the equipment network architecture.
5. Production Cycle and Trigger Logic
The identification process should be coordinated with fixture positioning and the production cycle.
Engineers should verify that the RFID identification is completed within the available station cycle time and that the control system processes the correct fixture ID before recording inspection results.
By integrating industrial HF RFID identification into the six testing stations, the manufacturer established an automatic fixture identification process throughout the production line.
The system supports:
Automatic Fixture Identification: Each fixture is recognized through its unique RFID UID without manual barcode scanning.
Inspection Data Association: The control system can associate inspection results and process parameters with the corresponding fixture.
Fixture Utilization Statistics: Production software can calculate total inspections, qualified products, and defective products for individual fixtures.
Production Traceability: Inspection records from different stations can be maintained and retrieved through the customer's production management system.
Reduced Manual Data Entry: Automatic identification reduces reliance on manual fixture registration and inspection data recording.
The same HF RFID hardware configuration can be considered for other manufacturing applications requiring close-range fixture identification and production process tracking.
Potential applications include:
Automotive electronics assembly and testing
Automotive component manufacturing
Consumer electronics display production
Lithium battery manufacturing
Industrial fixture and pallet tracking
Automated assembly and inspection equipment
Reliable RFID integration in automated manufacturing requires more than selecting a reader with a suitable communication interface.
Reading distance, tag mounting conditions, metal interference, workstation positioning, PLC communication, and production cycle timing must all be considered during engineering design.
With the RF-HZ50L-TP industrial HF RFID reader and RF-HZMTY300M-2K anti-metal RFID tag, Superisys provides an industrial identification hardware configuration for fixture tracking in automotive electronics production.
Superisys specializes in industrial LF, HF, and UHF RFID readers, antennas, and tags for manufacturing automation and industrial identification.
