1. Product Overview

Product Name: cPCI Bus Isolated 32/32 Channel Digital Input/Output Card (Positive Common)
Model: PIO-32/32L(CPCI)
Series: CompactPCI Digital I/O Series
Article Number: PIO-32/32L(CPCI)
Manufacturer: CONTEC Co., Ltd. (Japan)
Product Category: Industrial Automation / Measurement and Control / Digital I/O Interface Boards

The CONTEC PIO-32/32L(CPCI) is a CompactPCI (cPCI) bus–compliant, optically isolated digital input/output interface card designed for industrial control and monitoring applications. It provides 32 opto-isolated digital input channels and 32 opto-isolated digital output channels, each supporting 12–24 V DC signal levels. The board features positive common configuration, high isolation voltage, and robust electrical characteristics suitable for noisy industrial environments.

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2. Key Features

- CompactPCI Bus Interface: Fully compliant with the CompactPCI (cPCI) standard, enabling integration into industrial PC systems with cPCI backplanes.
- Opto-Isolated I/O Channels: 32 isolated digital inputs and 32 isolated digital outputs, each channel isolated by photo-couplers to protect the host system from electrical noise and surges.
- Positive Common Configuration: Designed for positive common wiring, simplifying integration with industrial sensors and actuators that share a common positive line.
- Wide Input Voltage Range: Accepts 12 V DC to 24 V DC input signals, compatible with standard industrial logic levels.
- High Output Drive Capability: Each output channel can sink up to 150 mA at 35 V DC maximum, with a total of 2 A per common line.
- High Isolation Voltage: 1 kVrms isolation between the PC bus and external I/O circuits ensures reliable operation in electrically noisy environments.
- Compact Form Factor: Short-size cPCI board (176 mm × 107 mm) suitable for space-constrained industrial systems.
- High Reliability: Industrial-grade components and design for continuous operation in automation, process control, and data acquisition systems.
- Software Support: Compatible with CONTEC’s API-PAC(W32) and API-TOOLs for Windows/Linux, providing easy integration with custom applications and third-party environments such as LabVIEW and MATLAB.

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3. Technical Specifications

| Parameter | Specification |
|----------------|------------------|
| Bus Interface | CompactPCI (cPCI) 32-bit, 33 MHz |
| Input Channels | 32 opto-isolated digital inputs |
| Output Channels | 32 opto-isolated digital outputs |
| Input Voltage Range | 12 V DC – 24 V DC |
| Input Type | Opto-isolated input for high sink current output (negative logic) |
| Input Resistance | Approx. 3 kΩ |
| Output Type | Opto-isolated open collector output (current sinking type, negative logic) |
| Output Rating | 35 V DC max., 150 mA max. per channel, 2 A max. per common |
| Isolation Voltage | 1 kVrms between I/O and bus |
| Common Configuration | Positive common |
| Connector Type | 96-pin half-pitch D-type female connector |
| Dimensions (L × H) | 176 mm × 107 mm |
| Power Supply | Supplied from cPCI bus |
| Operating Voltage | +5 V DC (from bus) |
| Power Consumption | Approx. 300 – 500 mA (typical) |
| Response Time | Max. 1 ms typical for standard opto-isolated I/O |
| Isolation Method | Photo-coupler isolation between PC and external I/O circuits |
| Operating Temperature | 0 °C – 50 °C |
| Storage Temperature | –10 °C – 60 °C |
| Humidity | 10 % – 90 % RH (non-condensing) |
| Weight | Approx. 200 g |

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4. Functionality

The PIO-32/32L(CPCI) functions as a digital interface between a CompactPCI-based industrial computer and external control devices such as sensors, switches, relays, and actuators.

- Digital Input Function:
Each of the 32 input channels detects ON/OFF states of external devices operating at 12–24 V DC. The opto-isolated input circuitry provides noise immunity and protects the host system from voltage transients.

- Digital Output Function:
The 32 output channels are open-collector type outputs capable of driving external loads such as relays, lamps, or solenoids. Each channel can sink up to 150 mA, with a maximum of 2 A per common line.

- Isolation and Protection:
The board’s opto-isolation prevents ground loops and electrical interference between the PC and field wiring. The 1 kVrms isolation barrier ensures safe operation even in high-noise industrial environments.

- Use Cases and Applications:
- Factory automation and process control systems
- Machine status monitoring and control
- PLC signal interfacing and expansion
- Data acquisition and test systems
- Remote I/O control in distributed monitoring networks

- Compatibility:
The card is compatible with CONTEC’s accessory ecosystem, including terminal blocks (EPD-96), screw-type terminal units (DTP-64(PC)), and shielded cables (PCB96PS series).

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5. Components & Accessories

Included Items:
- PIO-32/32L(CPCI) main board
- User documentation and driver software (API-PAC(W32), API-TOOLs)
- CompactPCI bracket and mounting hardware

Optional Accessories:
- Terminal Units:
- EPD-96 (DIN-rail mountable terminal block, 96-pin half-pitch)
- DTP-64(PC) (screw-type terminal unit for 64 I/O lines)
- Cables:
- PCB96PS-0.5P / PCB96PS-1.5P / PCB96PS-3P (shielded 96-pin half-pitch cables, 0.5 m – 3 m)
- PCA96PS series (shielded cable with one-side connector for custom wiring)
- Connectors:
- CN5-H96F (96-pin half-pitch female connector, 5 pcs set)
- DIN Rail Adapter:
- DIN-ADP1 (for mounting terminal units on DIN rails)
- Emulator / Diagnostic Tools:
- CM-64(PC)E (Check Mate 64-channel I/O emulator for testing and debugging)

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6. Installation & Setup

- System Requirements:
- CompactPCI backplane slot (32-bit, 33 MHz)
- +5 V DC power supply from the cPCI bus
- Host PC running Windows or Linux with available driver support

- Mounting Options:
The board is designed for installation in a standard CompactPCI chassis. It occupies one cPCI slot and connects directly to the backplane.

- External Wiring:
External I/O signals are connected via the 96-pin half-pitch D-type female connector. Shielded cables (PCB96PS series) are recommended for noise immunity.

- Configuration:
- No manual jumper settings are required; configuration is handled via software.
- Input/output logic levels and interrupt settings are managed through the provided API libraries.
- The board supports automatic resource allocation (Plug & Play) under supported operating systems.

- Software Setup:
- Install CONTEC’s API-PAC(W32) or API-TOOLs for Windows/Linux.
- Use the provided sample programs or integrate with third-party environments (LabVIEW, MATLAB).
- Verify operation using diagnostic utilities included with the driver package.

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7. Performance & Capabilities

- Input Performance:
- Input voltage range: 12–24 V DC
- Input current: Approx. 3–7 mA per channel (depending on voltage)
- Response time: ≤ 1 ms typical
- Isolation: 1 kVrms between input and bus

- Output Performance:
- Output type: Open collector (sinking)
- Output voltage: Up to 35 V DC
- Output current: 150 mA max. per channel, 2 A max. per common
- Response time: ≤ 1 ms typical
- Isolation: 1 kVrms between output and bus

- Electrical Protection:
- Opto-isolation for all channels
- Protection against surge and overcurrent
- Common line current limit (2 A per group)

- Efficiency and Reliability:
The board’s opto-coupler design ensures long operational life and stable performance under continuous operation. It is optimized for high reliability in industrial environments with electrical noise, vibration, and temperature variations.

- Limitations:
- External power supply required for I/O circuits (12–24 V DC).
- Not suitable for AC signal input/output.
- Total current per common line must not exceed 2 A.

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8. Standards & Compliance

- Bus Standard: CompactPCI (PICMG 2.0 compliant)
- Electrical Isolation: 1 kVrms isolation between PC and I/O circuits
- Safety & EMC: Designed to meet industrial EMC and safety standards (EN 61000 series)
- RoHS Compliance: Conforms to RoHS directive for hazardous substance restriction
- Operating Environment: Industrial-grade, suitable for continuous operation in factory and laboratory environments
- Software Standards:
- Windows API-PAC(W32) and API-TOOLs (Win32 API compliant)
- Linux API-TOOLs (module-style device driver and shared library)
- LabVIEW VI-DAQ and MATLAB ML-DAQ libraries available for download

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9. Additional Information

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

- Technical Support:
- Global support via CONTEC’s technical service network
- Online resources, driver downloads, and documentation available at [www.contec.com](https://www.contec.com)
- Free software updates and sample code libraries

- Maintenance:
- Periodic inspection of connectors and cables recommended
- Keep board and connectors free from dust and moisture
- Ensure proper grounding and shielding in high-noise environments

- Software Updates & Utilities:
- API-PAC(W32): Windows DLL-based API library for direct control of I/O functions
- API-TOOLs for Linux: Shared library and kernel module for Linux environments
- LabVIEW VI-DAQ: VI library for National Instruments LabVIEW integration
- MATLAB ML-DAQ: MATLAB Data Acquisition Toolbox interface for CONTEC boards

- Related Products:
- PIO-16/16L(CPCI): 16 input / 16 output version
- PIO-64/64L(CPCI): 64 input / 64 output high-density model
- PIO-32/32F(PCI): High-speed PCI version with faster response (5 µs)
- PIO-32/32B(PCI): Model with onboard isolated power supply

- Typical System Integration:
The PIO-32/32L(CPCI) can be combined with CONTEC’s analog I/O, counter, and communication boards to form a complete measurement and control system. It is often used in conjunction with CONTEC’s industrial PCs, panel PCs, or box PCs for automation and data acquisition solutions.

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Summary

The CONTEC PIO-32/32L(CPCI) is a robust, opto-isolated digital I/O card designed for CompactPCI systems, offering 32 input and 32 output channels with 12–24 V DC signal compatibility. Its 1 kVrms isolation, high current capacity, and positive common configuration make it ideal for industrial automation, process control, and monitoring applications. Supported by comprehensive driver libraries for Windows and Linux, and compatible with LabVIEW and MATLAB, it provides a flexible and reliable interface for integrating digital control and monitoring functions into PC-based systems.

With its compact design, high isolation, and extensive accessory ecosystem, the PIO-32/32L(CPCI) delivers industrial-grade performance and long-term reliability for demanding digital I/O applications.