1. Product Overview

Product Name: PCI Express Isolated 32/32 Channel Digital I/O Card with On-board Power
Model: DIO-3232B-PE
Series: DIO-PE Series (PCI Express Digital I/O Boards)
Article Number: DIO-3232B-PE
Manufacturer: CONTEC Co., Ltd. (Japan)
Product Category: Industrial Automation / Measurement and Control – Digital I/O Interface Boards
Bus Type: PCI Express (PCIe) Base Specification Rev. 1.0a ×1
Product Type: Opto-isolated digital input/output interface board with integrated power supply for input circuit drive

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2. Key Features

- 32 Opto-Isolated Digital Inputs and 32 Opto-Isolated Digital Outputs:
Provides 64 total I/O points, each isolated via opto-couplers to ensure electrical separation between the PC and external devices, minimizing noise interference and protecting the host system.

- On-board Power Supply (12VDC 240mA):
Integrated power source for driving input circuit opto-couplers, eliminating the need for an external power supply for input-side isolation circuits.

- Opto-Isolated Open Collector Outputs (Current Sinking Type):
Each output channel supports up to 35VDC and 100mA, with built-in surge and overcurrent protection (Zener diode and polyswitch).

- Interrupt Functionality:
All 32 input channels can be configured as interrupt sources. The 32 interrupt signals are combined into a single interrupt request (IRQ) line as INTA.

- Digital Filtering Function:
Built-in digital filter prevents false triggering due to noise or signal chattering, ensuring stable input signal acquisition.

- Negative Logic (Sink Current Input/Output):
The board operates on negative logic, where logical “ON” corresponds to a low voltage level, suitable for industrial control systems using sink-type logic.

- High Noise Immunity and Electrical Isolation:
Opto-coupler isolation between I/O and internal logic circuits prevents ground loops and electrical interference.

- PCI Express Interface:
Fully compliant with PCI Express Base Specification Rev. 1.0a ×1, ensuring compatibility with modern industrial PCs and embedded systems.

- Software Support:
Includes license-free driver libraries for Windows and Linux (API-TOOL / API-PAC(W32)), and VI-DAQ library for National Instruments LabVIEW integration.

- Surge and Overcurrent Protection:
Each output transistor includes a Zener diode and polyswitch for protection against voltage surges and excessive current.

- RoHS and Lead-Free Compliance:
Environmentally friendly design meeting RoHS directives and CONTEC’s Pb-free manufacturing standards.

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3. Technical Specifications

| Parameter | Specification |
|----------------|------------------|
| Input Channels | 32 opto-isolated inputs (sink current type, negative logic) |
| Output Channels | 32 opto-isolated open collector outputs (current sinking type, negative logic) |
| Input Signal Level | 12–24VDC (±10%) |
| Input Resistance | 4.7kΩ |
| Output Rating | 35VDC, 100mA per channel |
| Response Time (Max) | Within 200µsec (input/output) |
| Interrupts | 32 input signals combined into one interrupt request (INTA) |
| Internal Power Supply | 12VDC 240mA (on-board for input circuit drive) |
| External Power Requirement | 3.3VDC 400mA (PCIe bus power) |
| Isolation Type | Opto-coupler isolation between I/O and logic circuits |
| Logic Type | Negative logic (sink current) |
| Wiring Distance | Up to 50m (depending on wiring environment) |
| I/O Address | Any 32-byte boundary |
| Bus Interface | PCI Express Base Specification Rev. 1.0a ×1 |
| Board Dimensions | 169.33 mm (L) × 110.18 mm (H) |
| Connectors | 96-pin female half-pitch connector (PCR-E96LMD+ [HONDA Tsushin Kogyo] or equivalent) |
| Power Consumption | 3.3VDC 400mA (external), 12VDC 350mA (on-board) |
| Operating Temperature | 0°C to +50°C (typical industrial environment) |
| Storage Temperature | -10°C to +60°C |
| Humidity | 10–90% RH (non-condensing) |
| Weight | Approx. 200g (board only) |
| Mounting Type | Standard PCI Express slot (low-profile bracket available) |

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4. Functionality

The DIO-3232B-PE functions as a digital I/O interface board for industrial PCs equipped with PCI Express slots. It provides opto-isolated input and output channels for controlling and monitoring external devices such as sensors, relays, actuators, and PLCs.

- Input Function:
Each of the 32 input channels accepts 12–24VDC signals. The opto-coupler isolation ensures that external noise or voltage spikes do not affect the PC’s internal circuits. The on-board 12VDC power supply drives the input opto-couplers, simplifying wiring and eliminating the need for an external input power source.

- Output Function:
The 32 output channels are open collector type, capable of sinking up to 100mA per channel at 35VDC. These outputs can directly drive relays, lamps, or other DC loads. Built-in surge and overcurrent protection circuits safeguard both the board and connected devices.

- Interrupt Handling:
All input channels can generate interrupts. The board consolidates 32 interrupt lines into a single INTA signal, reducing system resource usage while maintaining responsiveness.

- Digital Filtering:
The digital filter suppresses transient noise and prevents false ON/OFF detection, ensuring reliable signal acquisition in electrically noisy environments.

- Applications:
- Factory automation and process control
- Machine tool monitoring and control
- Data acquisition and test systems
- PLC interfacing and signal conditioning
- Industrial robotics and motion control
- Environmental monitoring systems

- Compatibility:
Compatible with CONTEC’s PCI-based models (PIO-32/32B(PCI)H) for easy migration to PCI Express systems. Connector pin assignments and signal layouts are identical, allowing reuse of existing cables and terminal blocks.

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5. Components & Accessories

Included Items:
- DIO-3232B-PE PCI Express board
- Standard PCI bracket (low-profile bracket optional)
- Driver software (API-TOOL for Windows/Linux)
- Documentation and setup guide

Optional Accessories:
- Cables:
- PCB96P / PCB96PS / PCA96P / PCA96PS (96-pin half-pitch cables)
- PCB96WS (shielded cable for noise immunity)
- CN5-H96F (connector set for 96-pin half-pitch)

- Terminal Blocks:
- EPD-96A, EPD-96, DTP-64(PC), CM-64(PC)E, CCB-96 (for field wiring)

Connectors:
- 96-pin female half-pitch connector (PCR-E96LMD+ [HONDA Tsushin Kogyo] or equivalent)
- Supports connection to CONTEC’s standard terminal blocks and cable assemblies.

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6. Installation & Setup

- System Requirements:
- PC with available PCI Express ×1 slot (compatible with ×4/×8/×16 slots)
- Operating system: Windows 10/11, Linux kernel 2.6 or later
- Minimum 3.3VDC 400mA power supply from PCIe bus

- Mounting Options:
- Standard PCI Express bracket pre-installed
- Optional low-profile bracket available for compact chassis

- Configuration:
- Plug-and-play installation via PCI Express bus
- Automatic resource allocation (I/O address and IRQ)
- Software configuration through CONTEC’s API-TOOL or LabVIEW VI-DAQ library

- Wiring:
- External devices connect via 96-pin half-pitch cable to terminal blocks
- Input and output commons are grouped (1 common per 16 channels)
- Recommended wiring distance up to 50 meters depending on environment

- Driver Installation:
- Windows: API-PAC(W32) driver package with DLL and sample programs
- Linux: Kernel module driver with shared library and sample source code
- LabVIEW: VI-DAQ library for graphical programming integration

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7. Performance & Capabilities

- Input Performance:
- Voltage range: 12–24VDC (±10%)
- Input resistance: 4.7kΩ
- Response time: ≤200µsec
- Isolation: Opto-coupler per channel
- Interrupt capability: All 32 inputs

- Output Performance:
- Output type: Open collector (current sinking)
- Output voltage: Up to 35VDC
- Output current: 100mA per channel
- Protection: Zener diode (surge), polyswitch (overcurrent)
- Response time: ≤200µsec

- Electrical Isolation:
- Isolation voltage: 500VDC (typical between I/O and logic)
- Common configuration: 1 common per 16 channels

- Efficiency:
- Low power consumption (3.3VDC 400mA typical)
- On-board 12VDC supply reduces external wiring complexity

- Limitations:
- Designed for DC signal interfacing only (no AC input/output)
- Maximum wiring distance 50m (depends on cable and environment)
- Not suitable for direct connection to high-voltage AC loads

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8. Standards & Compliance

- Bus Standard: PCI Express Base Specification Rev. 1.0a ×1
- Electrical Safety: Opto-isolation between I/O and logic circuits
- Environmental Compliance:
- RoHS compliant (Restriction of Hazardous Substances)
- Pb-free (lead-free soldering and components)
- EMC Compliance: Designed for industrial environments with surge and noise protection
- Software Standards:
- Windows API-PAC(W32) compliant
- Linux kernel module compatible
- LabVIEW VI-DAQ interface compatible
- Quality Assurance: Manufactured under ISO 9001-certified processes

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9. Additional Information

- Warranty:
Standard CONTEC limited warranty (typically 1 year) covering manufacturing defects and hardware failures under normal operating conditions.

- Technical Support:
- Online documentation, FAQs, and driver downloads available at [www.contec.com](http://www.contec.com)
- Email and phone support for integration and troubleshooting
- Sample code and application notes provided for rapid development

- Maintenance:
- No periodic maintenance required
- Keep connectors clean and free of dust
- Ensure adequate ventilation in the PC chassis

- Firmware & Software Updates:
- Driver and library updates available from CONTEC’s global support portal
- Backward compatibility maintained with previous DIO-PE series models

- Related Models:
- DIO-1616B-PE: 16 input / 16 output version with on-board power
- DIO-3232L-PE: 32 input / 32 output version without on-board power
- DIO-3232F-PE: High-speed version (5µsec response)
- DIO-6464L-PE: 64 input / 64 output version for high-density applications

- Typical Applications:
- Industrial automation control panels
- Machine vision and inspection systems
- Process monitoring and alarm systems
- Data acquisition and test benches
- Embedded control in manufacturing equipment

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Summary

The CONTEC DIO-3232B-PE is a robust, opto-isolated 32-input/32-output PCI Express digital I/O card designed for industrial automation and control applications. It integrates a 12VDC on-board power supply to drive input opto-couplers, simplifying system design and reducing external wiring requirements. Each channel is protected against surges and overcurrent, ensuring long-term reliability in harsh environments. With full support for Windows, Linux, and LabVIEW, the DIO-3232B-PE provides a flexible, high-performance interface for digital signal control, monitoring, and data acquisition in modern industrial PCs.