Description
Woodhead PC104-DPIO DRL-DPM-BKF
Technical Specifications: Host bus interface: PC104 stackable bus Fieldbus: PROFIBUS DP slave station Digital I/O: Configurable isolated binary input and binary output channels PROFIBUS connector: 9 pin D-SUB connector Baud rate: 9.6 kbps up to 12 Mbps Power supply: 24V DC industrial power supply Operating temperature range: 0℃ ~ +60℃ Storage temperature range: -40℃ ~ +85℃ Relative humidity: 5% to 95%, non-condensing Form factor: PC104 stackable rectangular module Protection grade: IP20 inside embedded control enclosure
Functional Features: PC104 stackable structure to stack on embedded PC104 CPU board. Work as PROFIBUS DP slave station to exchange digital I/O data with DP master. Galvanic isolation between field digital I/O circuit and PC104 host bus. Collect digital input signal from proximity switches, push buttons and sensor contacts. Output digital switch signal to solenoid valves, indicator lamps and small relays. On-board hardware PROFIBUS protocol processing, reduce embedded CPU workload. LED indicators for power, PROFIBUS bus activity and I/O channel status. Built-in bus termination resistor configurable via hardware switch. Hardware self-diagnosis for communication and I/O circuit fault.
Application Scenarios: Compact embedded machine controller, small packaging machine embedded control, mobile machinery on-board control system, test bench embedded data acquisition, factory small remote I/O station, custom automation embedded control device.
Performance Parameters: Real-time cyclic digital I/O data exchange with PROFIBUS DP master. Isolation circuit suppresses field surge and transient overvoltage interference. Stable PROFIBUS communication under industrial electromagnetic environment. Continuous operation: 24 hours stable operation inside embedded control enclosure. On-board data buffer to ensure I/O data integrity during bus communication.
Material Composition: PCB substrate: Multi-layer FR4 glass fiber epoxy printed circuit board. Core components: PROFIBUS protocol controller, PROFIBUS transceiver, optocoupler isolation array, digital I/O logic chip, ESD protection device. Mechanical spacer: Nylon plastic standoff for stacking assembly. Connectors: gold plated stackable bus connector, 9 pin metal shell D-SUB connector, field I/O screw terminal block.
Structural Features: Rectangular flat standard size board with four corner mounting holes for stacking. bus male and female edge connectors on top and bottom of board for stack assembly. Front edge equipped with 9 pin D-SUB PROFIBUS connector and LED indicators. Side terminal block for field digital input and output wiring. Internal circuit separated into host bus area, PROFIBUS protocol processing area and isolated field I/O area. DIP switch on board to enable or disable PROFIBUS bus termination resistor.
Working Principle: 24V DC power supplies the module. stackable bus connects module with embedded CPU board. PROFIBUS DP master on fieldbus sends cyclic read and write telegrams to this slave module. On-board protocol chip parses PROFIBUS telegram, updates output channel state according to command from master, and reads field digital input status. Optocoupler provides galvanic isolation between field I/O loop and embedded bus. I/O status data is packaged into PROFIBUS response frame and transmitted back to DP master. LED indicators display power status, bus communication activity and I/O channel state. DIP switch sets bus termination resistor for network topology matching.
Installation Requirements: Cut off 24V DC control power before module stacking and wiring. Align male and female connectors, stack module onto CPU board and fasten corner nylon standoffs. Connect PROFIBUS shielded twisted pair cable to 9 pin D-SUB connector. Wire field sensor and actuator cables to module I/O terminal block. Set PROFIBUS station address and termination resistor DIP switch. Configure slave I/O mapping in PROFIBUS master engineering software. Connect embedded enclosure protective earth ground reliably. Separate PROFIBUS signal cable and field I/O cable from high power motor cables.
Usage Notes: Backup PROFIBUS master configuration before adding this slave station to network. Use PROFIBUS certified shielded twisted pair cable for bus wiring. Only enable termination resistor when module is installed at physical bus end. Wear anti-static wristband during module stacking and handling. Regularly inspect D-SUB connector, terminal block tightness and LED status. Do not apply voltage exceeding rated range to field I/O terminals. Do not operate module outside rated temperature and humidity range. Prevent dust and metal debris entering stack connector region.
