Comprehensive Product Summary – ADLINK PCI-7224 Digital I/O Card

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### 1. Product Overview

Product Name: PCI-7224
Model Number: PCI-7224
Series: 72XX Series – 24/48/96-Channel Digital I/O Cards
Article Number: PCI-7224
Manufacturer: ADLINK Technology Inc.
Product Type: PCI-Bus Digital I/O Card, 24 DIO Channels, Opto-22 Compatible

Description:
The ADLINK PCI-7224 is a 24-channel, Opto-22 compatible, parallel digital input/output (DIO) card designed for industrial automation, control, and data acquisition applications. It is part of ADLINK’s 72XX Series of PCI-based digital I/O cards, which also includes the PCI-7248 (48 channels) and PCI-7296 (96 channels). The PCI-7224 provides a single 50-pin Opto-22 compatible connector and emulates one 8255 Programmable Peripheral Interface (PPI) chip operating in Mode 0.

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### 2. Key Features

- 24-Channel Digital I/O:
Provides 24 TTL/DTL-compatible digital input/output lines organized as three 8-bit ports (Port A, Port B, Port C).

- Opto-22 Compatibility:
Fully compatible with industry-standard Opto-22 I/O modules and termination boards, allowing direct connection to external relay, input, and output modules.

- 8255 PPI Emulation:
Emulates Mode 0 of the Intel 8255 PPI, enabling flexible configuration of ports as input or output.

- Programmable Interrupt System:
Supports multiple interrupt sources, including digital input lines and timer outputs, with dual interrupt capability.

- Integrated Timer/Counter:
Includes one 16-bit event counter and one 32-bit cascaded timer for event counting and timed interrupt generation.

- Buffered I/O Circuits:
Provides high drive capability and signal buffering for reliable operation in industrial environments.

- Power Output Protection:
Onboard resettable fuses protect the +5V and +12V power outputs available on the Opto-22 connector.

- Software Compatibility:
Supported by ADLINK’s PCIS-DASK driver library for Windows and Linux, as well as LabVIEW™, MATLAB®, and HP VEE™ integration.

- Plug and Play PCI Interface:
Fully compliant with PCI 2.1 specifications, supporting automatic resource allocation (I/O address and IRQ).

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### 3. Technical Specifications

Digital I/O:
- Number of Channels: 24 input/output lines (3 ports × 8 bits each)
- Logic Standard: 5V TTL/DTL compatible
- Input Voltage Levels:
- Logic High: 2.0 V to 5.25 V
- Logic Low: 0.0 V to 0.8 V
- Input Current:
- High: 20 µA
- Low: -0.2 mA
- Output Voltage Levels (Ports A & B):
- High: ≥ 2.4 V
- Low: ≤ 0.5 V
- Output Voltage Levels (Port C):
- High: ≥ 2.4 V
- Low: ≤ 0.4 V
- Output Drive Capability:
- Source Current: 2.6 mA (Ports A & B), 15 mA (Port C)
- Sink Current: 24 mA

Connector:
- Type: 50-pin male ribbon connector (Opto-22 compatible)
- Pinout: 3 ports (A, B, C) with +5V and +12V power outputs protected by resettable fuses

Electrical & Environmental:
- Power Requirement: +5 VDC @ 330 mA (typical), 350 mA (max)
- Operating Temperature: 0°C to 60°C
- Storage Temperature: -20°C to 80°C
- Humidity: 5% to 95%, non-condensing

Physical:
- Dimensions: 148 mm (L) × 102 mm (H)
- Weight: Approx. 150 g (board only)
- Form Factor: Full-size PCI card

Performance:
- Data Transfer Mode: Programmed I/O
- Maximum Transfer Rate: 500 KB/s

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### 4. Functionality

Operating Principle:
The PCI-7224 functions as a general-purpose digital I/O interface for industrial PCs. It uses one 8255 PPI chip configured in Mode 0, providing three 8-bit ports (A, B, C). Each port can be independently configured as input or output. The card supports both event counting and timed interrupts through its integrated 8254 timer/counter.

Use Cases and Applications:
- Industrial process monitoring and control
- Machine automation and relay control
- Switch and contact closure monitoring
- Digital signal acquisition and pattern generation
- Integration with A/D and D/A modules for hybrid data acquisition systems
- Connection to Opto-22 relay and input modules for isolated I/O expansion

Compatibility:
- Compatible with Opto-22, Grayhill, and similar I/O modules
- Supported by ADLINK’s PCIS-DASK driver for Windows 2000/XP/Vista/7 and Linux
- Integrates with LabVIEW™, MATLAB®, HP VEE™, and other automation software

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### 5. Components & Accessories

Included Items:
- PCI-7224 DIO card
- ADLINK Software & Driver CD
- User’s Manual and Software Installation Guide

Optional Termination Boards (Opto-22 Compatible):
- TB-24R/24: 24-channel relay output board (24V coil voltage)
- TB-24P/24: 24-channel isolated digital input board
- TB-16P8R/24: 16 isolated inputs + 8 relay outputs
- DIN-24R/24: 24 relay outputs with DIN-rail mounting
- DIN-24P/24: 24 isolated digital inputs with DIN-rail mounting
- DIN-24G: 24-channel Grayhill I/O module interface board

Cables:
- ACL-10150: 1.5-meter 50-pin flat ribbon cable (included with termination boards)

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### 6. Installation & Setup

System Requirements:
- PCI slot (5V signaling) on an industrial or desktop PC
- Supported operating systems: Windows 2000/XP/Vista/7, Linux

Installation Steps:
1. Power off the PC and disconnect all peripherals.
2. Insert the PCI-7224 into an available PCI slot.
3. Secure the card and reconnect power.
4. Upon boot, the system BIOS automatically assigns I/O and IRQ resources.
5. Install ADLINK’s PCIS-DASK driver and verify installation using the provided utility.

Jumper Configuration:
- Port Power-On State: Each port (A, B, C) can be configured as pulled-high, pulled-low, or floating via jumpers (default: pulled-high).
- 12V Power Configuration: Pins 2 and 4 on the connector can be set as +12V output or GND using jumpers JP1–JP4 (default: GND).

Connector Pinout Summary (CN1):
- Pins 1–25: Port C, B, A signals
- Pins 26–50: Ground and power lines (+5V, +12V)
- Power pins protected by resettable fuses

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### 7. Performance & Capabilities

- I/O Throughput: Up to 500 KB/s (programmed I/O mode)
- Timer/Counter:
- One 16-bit event counter (8254 Counter #0)
- One 32-bit cascaded timer (Counters #1 and #2)
- Input clock: 2 MHz
- Timer frequency range: 0.000466 Hz to 500 kHz
- Interrupt System:
- Dual interrupt capability (INT1 and INT2)
- Sources: digital input lines (P1C0, P1C3) or timer outputs
- Programmable trigger conditions (rising/falling edge, event counter, timer)
- Power Output Protection:
- +5V and +12V outputs limited to 0.5 A per connector via resettable fuses

Limitations:
- No hardware isolation on I/O lines (requires external isolation boards)
- Programmed I/O only (no DMA or bus mastering)

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### 8. Standards & Compliance

- Bus Interface: PCI Local Bus Specification Rev. 2.1 compliant
- Logic Standard: 5V TTL/DTL
- Environmental Compliance:
- Operating temperature: 0–60°C
- Storage temperature: -20–80°C
- Humidity: 5–95% non-condensing
- Safety & EMC: Designed for industrial environments; conforms to CE and FCC Class A standards (when installed in compliant systems)
- Software Standards:
- Compatible with ADLINK PCIS-DASK API
- Supports Windows and Linux kernel-mode drivers
- LabVIEW™, MATLAB®, and HP VEE™ integration libraries available

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### 9. Additional Information

Warranty:
- Standard 2-year limited warranty from date of shipment
- Covers defects in materials and workmanship under normal use
- Excludes damage from misuse, improper installation, or environmental factors

Technical Support:
- ADLINK Technology Inc.
- Address: 9F, No.166 Jian Yi Road, Chungho City, Taipei County 235, Taiwan
- Tel: +886-2-8226-5877
- Fax: +886-2-8226-5717
- Email: service@adlinktech.com
- Website: [www.adlinktech.com](http://www.adlinktech.com)

Maintenance:
- No periodic calibration required
- Keep connectors clean and free of dust
- Use anti-static precautions when handling

Software & Driver Updates:
- Latest drivers and manuals available at [www.adlinktech.com](http://www.adlinktech.com)
- PCIS-DASK and PCIS-DASK/X libraries updated regularly for new OS compatibility

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### Summary

The ADLINK PCI-7224 is a robust, cost-effective 24-channel digital I/O card designed for industrial automation and control systems requiring reliable, high-speed digital interfacing. With full Opto-22 compatibility, programmable interrupt and timer functions, and comprehensive software support, it provides a flexible platform for digital signal monitoring, control, and integration with external relay and sensor modules. Its adherence to PCI standards, combined with ADLINK’s extensive driver library and accessory ecosystem, makes it a versatile solution for both legacy and modern industrial PC environments.