Comprehensive Product Summary – CNT24‑4D(PCI)H

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### 1. Product Overview
Product Name: PCI 4‑Channel 24‑bit Up/Down Counter
Model Number: CNT24‑4D(PCI)H
Article Number: CNT24‑4D(PCI)H
Series: CONTEC Counter & Motion Controller Series
Manufacturer: CONTEC Co., Ltd. (Japan)
Product Category: Industrial Automation / Measurement and Control / Counter Boards
Bus Type: PCI (32‑bit, 33 MHz, 5 V or 3.3 V compatible)
Product Type: Differential and TTL‑level input 24‑bit up/down counter board for PC‑based measurement and control systems

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### 2. Key Features
- Four independent 24‑bit up/down counters supporting single‑phase or two‑phase pulse inputs.
- Dual input modes: differential line‑receiver input and TTL‑level input selectable per channel.
- High‑speed counting: up to 1 MHz for both differential and TTL inputs.
- Programmable timer: allows periodic interrupt generation from 1 ms to 200 s.
- Surge protection: differential input section equipped with Zener‑diode surge suppression to prevent damage from voltage spikes.
- Digital filter function: hardware‑based noise suppression to eliminate chattering and false counts.
- Counter coincidence output: generates a pulse when a preset count value is reached.
- Interrupt generation: triggered by count match or timer expiration for real‑time event handling.
- Compact PCI short‑size board: 176.4 mm (L) × 107.0 mm (H).
- High reliability: industrial‑grade components, RoHS‑compliant construction.
- Software support: Windows and Linux drivers (API‑TOOL), and LabVIEW VI‑DAQ library for seamless integration with measurement applications.
- Connector compatibility: 96‑pin half‑pitch connector compatible with CNT24‑4(PCI) and other CONTEC counter boards.

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### 3. Technical Specifications

| Parameter | Specification |
|----------------|------------------|
| Number of Channels | 4 independent counter channels |
| Counting System | 24‑bit up/down counter (two‑phase, single‑phase, or single‑phase with gate control) |
| Input Type | Differential line‑receiver input / TTL‑level input |
| Input Voltage Range | Differential: ±7 V; TTL: standard 5 V logic level |
| Response Frequency (Max.) | 1 MHz (duty 50 %) for both differential and TTL inputs |
| Timer Range | 1 ms – 200 s (programmable) |
| Maximum Count Value | 24‑bit binary (0 – 16,777,215) |
| Input Impedance | TTL: 1 TTL‑level load; Differential: ±7 V input range |
| Interrupt Sources | Count match, timer timeout |
| I/O Address Occupation | Any 32‑byte boundary |
| Additional Functions | Digital filter, counter coincidence pulse output |
| Power Consumption (Max.) | +5 V DC ± 5 %, 500 mA |
| Bus Interface | PCI standard, 32‑bit, 33 MHz, 5 V or 3.3 V signaling |
| Board Dimensions | 176.41 (L) × 105.68 (H) mm |
| Connectors | 96‑pin half‑pitch connector (PCR‑E96LMD [HONDA Tsushin Kogyo] or equivalent) |
| Operating Temperature | 0 – 50 °C (typical industrial environment) |
| Storage Temperature | –20 – 60 °C |
| Relative Humidity | 10 – 90 % RH (non‑condensing) |
| Weight | Approx. 120 g |
| Compliance | RoHS‑compliant, CE‑mark (where applicable) |

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### 4. Functionality

Operational Principle:
The CNT24‑4D(PCI)H counts incoming pulse signals from external devices such as incremental rotary encoders, linear gauges, or pulse‑output flowmeters. Each channel can operate as an independent up/down counter or as a two‑phase (A/B) quadrature counter. The board performs addition and subtraction of count values in hardware, allowing the host PC to read current counts on demand without CPU overhead.

Use Cases and Applications:
- Position and displacement measurement using rotary or linear encoders.
- Flow rate or power measurement from pulse‑output sensors.
- Event counting and frequency measurement in industrial automation.
- Feedback monitoring in motion control systems.
- Integration with PLCs or PC‑based control systems for synchronized data acquisition.

Compatibility:
- Fully compatible with standard PCI bus slots in desktop or industrial PCs.
- Connector pin assignment compatible with CNT24‑4(PCI) and other CONTEC counter boards for easy interchangeability.
- Supported by CONTEC’s API‑TOOL driver suite for Windows and Linux, and LabVIEW VI‑DAQ library for National Instruments environments.

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### 5. Components & Accessories

Included Items:
- CNT24‑4D(PCI)H main board
- Standard PCI bracket (for full‑height slot)
- Documentation and driver software (downloadable from CONTEC website)

Optional Accessories:
- Cables:
- PCB96P‑1.5 / PCB96PS‑1.5 (96‑pin half‑pitch flat or shielded cables, 1.5 m)
- PCA96P‑1.5 / PCA96PS‑1.5 (96‑wire ribbon or shielded cables)
- PCB96WS‑1.5 (96‑pin half‑pitch to dual 37‑pin D‑SUB converter cable)
- Terminal Blocks / Converter Boards:
- EPD‑96, EPD‑96A (DIN‑rail mount terminal units)
- DTP‑64(PC) screw‑type terminal panel
- CCB‑96 connector converter (96‑pin to dual 37‑pin D‑SUB)
- Connectors: CN5‑H96F (96‑pin half‑pitch female connector, 5 pcs set)
- Software: API‑TOOL for Windows/Linux, VI‑DAQ for LabVIEW

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### 6. Installation & Setup

System Requirements:
- PC with available PCI expansion slot (32‑bit, 33 MHz, 5 V or 3.3 V).
- Operating system: Windows 10/11, Windows Server, or Linux kernel supported by CONTEC API‑TOOL drivers.
- Administrative privileges for driver installation.

Mounting Options:
- Standard PCI slot installation; bracket included for secure mounting.
- Compatible with industrial PC chassis and backplanes.

Configuration:
1. Power off the PC and insert the CNT24‑4D(PCI)H into an available PCI slot.
2. Secure the bracket and close the chassis.
3. Power on the system; the board is automatically recognized via Plug‑and‑Play.
4. Install the CONTEC API‑TOOL driver package.
5. Configure channel modes (TTL or differential) and timer parameters using the provided utility or API commands.
6. Connect external devices via the 96‑pin half‑pitch connector using appropriate cables and terminal blocks.

Electrical Connection Notes:
- Differential inputs use line‑receiver circuits for noise‑resistant, long‑distance signal transmission.
- TTL inputs use direct logic‑level circuits for high‑speed counting.
- Ensure proper grounding and shielding to minimize noise.
- Observe input voltage limits (±7 V differential, 5 V TTL).

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### 7. Performance & Capabilities

Counting Performance:
- Resolution: 24 bits per channel (16,777,216 counts).
- Input Frequency: up to 1 MHz (duty 50 %).
- Input Modes:
- Two‑phase (A/B) quadrature counting for direction detection.
- Single‑phase up/down counting.
- Single‑phase with gate control.
- Timer Function: programmable from 1 ms to 200 s for periodic interrupts or time‑based counting.
- Interrupt Handling: hardware‑based generation on count match or timer expiration.
- Digital Filtering: adjustable delay to suppress contact bounce and electrical noise.
- Surge Protection: Zener‑diode protection on differential inputs prevents damage from transient voltages.

Efficiency and Reliability:
- Hardware counting minimizes CPU load, enabling real‑time performance.
- Industrial‑grade components ensure stable operation in electrically noisy environments.
- Differential input circuits provide high noise immunity and allow long‑distance signal transmission.

Limitations:
- Maximum input frequency limited to 1 MHz (TTL or differential).
- Opto‑isolated input mode not available on this model (use CNT24‑4(PCI)H for isolation).
- Requires external cabling and terminal blocks for signal connection.

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### 8. Standards & Compliance

- Bus Standard: PCI Local Bus Specification Rev. 2.2 (32‑bit, 33 MHz).
- Electrical Safety: Designed for low‑voltage DC operation (+5 V).
- Environmental Compliance:
- RoHS‑compliant (lead‑free construction).
- Pb‑free marking per CONTEC environmental standards.
- EMC/EMI: Designed to meet CE requirements for industrial environments.
- Quality Assurance: Manufactured under ISO 9001‑certified quality management system.

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### 9. Additional Information

Warranty:
Standard CONTEC limited warranty (typically one year) covering defects in materials and workmanship under normal use.

Technical Support:
- Global support via [www.contec.com](http://www.contec.com).
- Downloadable drivers, manuals, and sample programs.
- API‑TOOL documentation for Windows and Linux development.
- LabVIEW VI‑DAQ library for integration with National Instruments software.

Maintenance:
- Periodic inspection of connectors and cables recommended.
- Keep board free from dust and moisture.
- Avoid electrostatic discharge during handling.

Software Updates:
- Free driver and utility updates available from CONTEC’s website.
- API‑TOOL and VI‑DAQ libraries maintained for current OS versions.

Related Products:
- CNT24‑4(PCI)H: 4‑channel 24‑bit counter with opto‑isolated inputs (500 kHz).
- CNT32‑8M(PCI): 8‑channel 32‑bit high‑speed counter with bus‑master transfer.
- CNT32‑4MT(LPCI): 4‑channel 32‑bit LVTTL counter for low‑profile PCI.
- CNT24‑2(USB)GY: 2‑channel 24‑bit opto‑isolated USB counter module.

Typical System Integration:
The CNT24‑4D(PCI)H can be combined with CONTEC digital I/O or analog I/O boards for comprehensive measurement and control systems. It interfaces seamlessly with motion controllers (SMC‑series) and remote I/O modules via CONTEC’s unified driver architecture.

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### Summary

The CONTEC CNT24‑4D(PCI)H is a robust, high‑precision 4‑channel 24‑bit up/down counter board designed for PCI‑based industrial PCs. It supports both differential and TTL‑level pulse inputs up to 1 MHz, making it ideal for encoder, flowmeter, and sensor signal counting. With a programmable timer, digital filter, and surge‑protected differential inputs, it ensures reliable operation in demanding environments. The board’s API‑TOOL drivers for Windows and Linux and LabVIEW VI‑DAQ support simplify integration into automation and measurement systems. Its 96‑pin half‑pitch connector, compact PCI form factor, and RoHS‑compliant design make it a dependable choice for precision counting and monitoring applications in industrial automation, research instrumentation, and process control.