1. Product Overview

Product Name: PCI Bus Isolated 32/32 Channel Digital Input/Output Card (Positive Common)
Model: PIO-32/32B(PCI)V
Series: PIO-32/32B PCI Series
Article Number: PIO-32/32B(PCI)V
Manufacturer: CONTEC Co., Ltd. (Japan)
Version: Ver. 1.13

The CONTEC PIO-32/32B(PCI)V is a PCI bus–compliant isolated digital I/O interface board designed for industrial and laboratory automation systems. It provides 32 optically isolated digital input channels and 32 optically isolated open-collector output channels, each grouped in 16-channel commons. The board supports both internal and external power supply configurations and offers robust noise immunity through opto-coupler isolation. It is compatible with Windows and Linux operating systems and includes driver libraries and LabVIEW support for seamless integration into data acquisition and control systems.

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2. Key Features

- Opto-Isolated Digital I/O:
32 opto-coupler isolated input channels (compatible with current sink output) and 32 opto-coupler isolated open-collector output channels (current sink type). Each 16-channel group has a separate common terminal, allowing different external power supplies per group.

- High Noise Immunity:
Complete opto-coupler isolation between the PC bus and I/O interfaces ensures excellent noise performance and electrical isolation (500 Vrms dielectric strength).

- Internal Power Supply for Opto-Couplers:
The board includes an internal 12 V DC, 250 mA isolated power supply for driving the opto-couplers, eliminating the need for an external supply. Jumpers (JP2–JP9) allow selection between internal or external power per 16-channel group.

- Interrupt Functionality:
All 32 input channels can be configured as interrupt request signals. Interrupts can be enabled or disabled per bit, and the triggering edge (rising or falling) can be selected via software.

- Digital Input Filtering:
A software-configurable digital filter prevents false signal recognition due to noise or contact chattering. Filter time constants are adjustable from 0 to 20 (0 disables filtering).

- Output Protection:
Each output circuit includes a Zener diode (RD47FM or equivalent) for surge protection and an overcurrent protection circuit per 8-channel block. Rated output: 35 V DC, 100 mA per channel.

- Software Support:
Includes CONTEC’s API-PAC(W32) driver library for Windows and Linux, with sample programs and diagnostic utilities. LabVIEW integration is supported via DAQfast and VI-DAQ libraries downloadable from CONTEC’s website.

- Compatibility:
Fully compatible with PCI 32-bit, 33 MHz bus (universal key shape). Equivalent in pin assignment to the PIO-32/32B(PCI)H model, with enhanced interrupt and protection features.

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3. Technical Specifications

| Parameter | Specification |
|----------------|------------------|
| Input Type | Optocoupler isolated input (negative logic, compatible with current sink output) |
| Number of Inputs | 32 channels (all interrupt-capable) |
| Input Resistance | 4.7 kΩ |
| Input ON Current | ≥ 2.0 mA |
| Input OFF Current | ≤ 0.16 mA |
| Input Voltage Range | 12–24 V DC (±10%) |
| Response Time (Input) | ≤ 200 µs |
| Output Type | Optocoupler isolated open-collector output (current sink type, negative logic) |
| Number of Outputs | 32 channels (one common per 16 channels) |
| Output Voltage | Up to 35 V DC |
| Output Current | Max. 100 mA per channel |
| Residual Voltage | ≤ 0.5 V (≤ 50 mA), ≤ 1.0 V (≤ 100 mA) |
| Surge Protection | Zener diode RD47FM (NEC) or equivalent |
| Response Time (Output) | ≤ 200 µs |
| Isolation Voltage | 500 Vrms between PC and I/O circuits |
| Internal Power Supply | 12 V DC, 250 mA (for opto-coupler drive) |
| External Power Supply | 12–24 V DC (±10%) |
| Power Consumption | 5 V DC 300 mA (external power) / 5 V DC 1050 mA (internal power) |
| Operating Temperature | 0–50 °C |
| Operating Humidity | 10–90 % RH (non-condensing) |
| Signal Extension Distance | Approx. 50 m (depending on wiring environment) |
| PCI Bus Specification | 32-bit, 33 MHz, universal key (requires +5 V supply) |
| Dimensions | 176.41 mm (L) × 106.68 mm (H) |
| Weight | Approx. 215 g |
| Standards Compliance | VCCI Class A, CE Marking (EMC Directive Class A, RoHS Directive) |

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4. Functionality

The PIO-32/32B(PCI)V serves as a digital interface between a PC and external devices such as sensors, switches, relays, and actuators. It converts digital input signals into logic-level data readable by the host PC and outputs digital control signals to external loads.

- Input Operation:
Each input channel detects ON/OFF states of external current-driven devices (e.g., switches, transistor outputs). The opto-isolated input circuit ensures electrical separation from the PC system. Inputs accept 12–24 V DC signals and can be filtered digitally to suppress noise.

- Output Operation:
Each output channel drives external loads such as relays, LEDs, or TTL-level inputs. The open-collector configuration allows current sinking up to 100 mA per channel. Outputs are reset to OFF when the PC powers on.

- Interrupt Handling:
The board can generate interrupts on any input channel, triggered by rising or falling edges. Interrupt masks and edge selection are configurable per bit, enabling flexible event-driven control.

- Digital Filtering:
The digital filter checks input stability over a defined sampling period. Only signals stable for the configured duration are recognized, effectively eliminating transient noise.

- Software Integration:
The board is programmable via CONTEC’s API-PAC(W32) library, supporting C/C++, Visual Basic, and other Win32-compatible languages. Linux users can employ the API-DIO(LNX) library with GCC sample code. LabVIEW users can integrate through DAQfast or VI-DAQ libraries.

Typical Applications:
- Industrial automation and process control
- Machine status monitoring and control
- Data acquisition systems
- Laboratory instrumentation
- PLC interfacing and signal conditioning
- Event-driven digital control systems

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5. Components & Accessories

Included in Package:
- PIO-32/32B(PCI)V board × 1
- First Step Guide × 1
- Driver Library Disk [API-PAC(W32)] × 1
- Warranty Certificate × 1
- Serial Number Label × 1

Optional Cables:
- Shielded Cable with 96-pin Half-Pitch Connectors (both ends):
PCB96PS-0.5P (0.5 m), PCB96PS-1.5P (1.5 m), PCB96PS-3P (3 m), PCB96PS-5P (5 m)
- Flat Cable with 96-pin Half-Pitch Connectors (both ends):
PCB96P-1.5 (1.5 m), PCB96P-3 (3 m)
- Shielded Cable with 96-pin Connector (one end):
PCA96PS-0.5P (0.5 m), PCA96PS-1.5P (1.5 m), PCA96PS-3P (3 m), PCA96PS-5P (5 m)
- Distribution Shield Cable (96-pin to dual 37-pin):
PCB96WS-1.5P (1.5 m), PCB96WS-3P (3 m), PCB96WS-5P (5 m)

Optional Accessories:
- Screw Terminal Boards: EPD-96A, EPD-96, EPD-37A, EPD-37
- Digital I/O Terminal Panel: DTP-64A
- Signal Monitors: CM-64L (64-bit), CM-32L (32-bit)
- Connection Conversion Board (96-pin to dual 37-pin): CCB-96

*Note: Appropriate cables (PCB96P/PS or PCB96WS) are required for connection to optional accessories.*

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6. Installation & Setup

Hardware Installation Steps:
1. Power off the PC and remove the cover.
2. Insert the PIO-32/32B(PCI)V into an available PCI slot (supports both 5 V and 3.3 V keyed slots).
3. Secure the bracket with a screw.
4. Replace the PC cover and power on the system.
5. The OS will detect the new hardware automatically.

Power Supply Selection:
- Use jumpers JP2–JP9 to select internal or external power for each 16-channel group.
- Do not use both internal and external supplies simultaneously.
- Internal supply provides 12 V DC 250 mA; external supply should be 12–24 V DC (±10%).

Software Setup:
- Install the API-PAC(W32) driver library before inserting the board.
- For Windows, use API-DIO(WDM) (recommended) or API-DIO(98/PC) for legacy systems.
- For Linux, install API-DIO(LNX) from the bundled disk or CONTEC website.
- After installation, initialize the device in Device Manager and verify operation using the diagnostic utility.

Board ID Setting:
- Rotary switch SW1 sets the board ID (0–Fh) for up to 16 boards in one system.

Verification:
- Use the diagnostic program to test input/output operations and interrupt functionality.

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7. Performance & Capabilities

- Input/Output Speed: 200 µs response time for both input and output channels.
- Channel Capacity: 32 inputs + 32 outputs, all optically isolated.
- Interrupt Handling: 32 interrupt-capable inputs combined into a single INTA output.
- Power Efficiency: Internal opto-coupler power eliminates external supply needs; total board consumption ≤ 1050 mA at 5 V DC.
- Signal Integrity: Opto-isolation and digital filtering ensure reliable operation in noisy environments.
- Distance Capability: Signal extension up to approximately 50 m depending on wiring and environment.
- Limitations: Requires +5 V PCI slot (not compatible with +3.3 V-only systems); output current limited to 100 mA per channel.

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8. Standards & Compliance

- Electrical Safety: 500 Vrms dielectric strength between PC and I/O circuits.
- EMC Compliance: CE Marking (EMC Directive Class A).
- Emission Standard: VCCI Class A (for industrial environments).
- Environmental Compliance: RoHS Directive compliant.
- PCI Bus Standard: 32-bit, 33 MHz, universal key shape (supports both 5 V and 3.3 V signaling).

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9. Additional Information

Warranty:
Limited three-year warranty covering defects in materials and workmanship. Warranty excludes physical damage, misuse, or unauthorized modification. Repairs are free of charge when returned prepaid with proof of purchase and RMA authorization.

Support & Maintenance:
- Technical documentation, updated drivers, and sample programs are available at [https://www.contec.com/](https://www.contec.com/).
- Diagnostic utilities and firmware updates can be downloaded free of charge.
- Customer support includes troubleshooting guides, FAQs, and application examples.

Maintenance Recommendations:
- Avoid exposure to corrosive gases, dust, or moisture.
- Do not install or remove the board while the PC is powered.
- Clean edge connectors with industrial alcohol if touched.
- Store in original packaging at room temperature, away from static electricity and vibration.

Software Updates:
- API-PAC(W32) and API-DIO(LNX) libraries are periodically updated for new OS compatibility.
- LabVIEW libraries (DAQfast, VI-DAQ) are available for free download.

Differences from PIO-32/32B(PCI)H:
- All 32 input channels support interrupts (vs. 4 on the H model).
- Enhanced digital filter timing (2[n]/(8×10⁶) vs. 2[n]/(16×10⁶)).
- Added surge protection (Zener diodes).
- Automatic interrupt level allocation (no jumper required).
- Reduced power consumption (1050 mA vs. 1300 mA internal).
- Non-ASIC design for improved maintainability.

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Summary

The CONTEC PIO-32/32B(PCI)V is a high-performance, opto-isolated digital I/O board for PCI bus systems, offering 32 input and 32 output channels with robust electrical isolation, flexible power options, and comprehensive software support. Its combination of high noise immunity, interrupt capability, and digital filtering makes it ideal for industrial automation, process control, and data acquisition applications. With cross-platform driver libraries, LabVIEW integration, and a three-year warranty, it provides a reliable and versatile solution for digital signal interfacing in demanding environments.