Description
Embedded EPCDFBA
Technical Specifications
- Product Type: Embedded fieldbus communication interface board
- Host Interface: Embedded CPU bus interface
- Fieldbus Protocol: Industrial fieldbus protocol support
- Power Supply: 5VDC / 3.3VDC onboard power
- Isolation: Galvanic isolation between host side and fieldbus side
- Protection Rating: Bare board IP00; enclosed version IP30
- Operating Temperature: -20 °C to +70 °C
- Data Rate: Configurable fieldbus baud rate
- Mounting: Embedded board stack or chassis mounting
Functional Features
- Bidirectional data transfer between embedded host processor and industrial fieldbus network.
- Galvanic isolation protects embedded host circuit from field side surge and noise.
- Onboard protocol controller handles fieldbus data frame encoding and decoding.
- Hardware watchdog monitors fieldbus communication link status.
- Built-in transient surge protection for fieldbus wiring terminals.
- Interrupt signal output to host CPU upon data reception or fault event.
- Firmware upgradable for protocol function updates.
- Supports multiple fieldbus node address configuration.
- Communication error counter records frame loss and fault statistics.
- Low power consumption for embedded low-power control systems.
Application Scenarios
- Embedded industrial controller fieldbus communication
- Custom machine control embedded motherboard expansion
- Remote data acquisition embedded systems
- Mobile industrial machinery control units
- Custom test and measurement embedded equipment
Material Composition
- Circuit substrate: FR4 high temperature PCB
- Main chips: Fieldbus protocol controller, isolation transceivers
- Protection components: TVS diodes and surge resistors
- Connectors: Gold-plated board-to-board connectors for host interface
- Fieldbus connector: Industrial terminal block or circular connector
- Coating: Conformal coating available for harsh environment option
Structural Characteristics
- Compact rectangular bare PCB board form for embedded integration.
- One edge carries host bus connector connecting to main embedded CPU board.
- Another edge provides fieldbus wiring terminals.
- Isolation barrier separates host circuit zone and fieldbus circuit zone on PCB layout.
- Surface mount components for compact size.
- Mounting holes available for fixing inside equipment chassis.
Working Principle The embedded host CPU sends data through host bus to EPCDFBA board. The onboard protocol controller packages data into standard fieldbus frames and transmits to fieldbus network via isolated transceiver. Incoming fieldbus messages are decoded, verified and transferred to host CPU. The galvanic isolation barrier blocks high voltage surges and common mode noise from field wiring to protect embedded host board. The communication monitoring circuit counts frame errors and triggers alarm signal when communication failure occurs.
Installation Requirements
- Fix board inside closed equipment chassis with proper mechanical support.
- Complete board-to-board connection with host CPU motherboard.
- Use shielded twisted pair cable for fieldbus network wiring.
- Single point grounding of cable shield at one end only.
- Configure node address and baud rate before system startup.
- Maintain proper clearance between board and high voltage circuits.
- Verify communication wiring polarity after installation.
Usage Notes
- Apply static protection when handling bare PCB board.
- Do not exceed maximum voltage rating on fieldbus terminals.
- Avoid physical bending or scratching PCB traces.
- Backup firmware before performing firmware upgrade.
- Keep board away from moisture and corrosive gas.
- Do not operate board without chassis shielding in high EMI environment.
- Check communication error counters regularly during long time operation.
