Comprehensive Product Summary – Rayon UP2024I Universal PCI Multi-Port Serial Card

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### 1. Product Overview

Product Name: UP2024I Universal PCIPORT Card
Model: UP2024I
Series: UPCI Isolated RS422/RS485 Intelligent Serial Solution
Article Number: UP2024I
Manufacturer: Rayon Technology Co., Ltd.
Manufacturer Address: 2F, No. 177, Chung Shan 2 Rd., Lu Chou City, Taipei Hsien, Taiwan
Contact:
- Tel: +886-2-82858362
- Fax: +886-2-82857065
- Email: rayon@ms1.hinet.net
- Web: [www.rayontech.com](http://www.rayontech.com)

The UP2024I is a high-density, intelligent multi-port serial communication card designed for industrial and commercial PC systems requiring multiple isolated RS422/RS485 interfaces. It integrates advanced isolation, flexible configuration, and broad OS compatibility, making it suitable for data acquisition, industrial automation, and multi-terminal communication environments.

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### 2. Key Features

- 24 Ground-Isolated RS422/RS485 Ports: Supports 24 fully isolated serial channels through three IF208 connector boxes (8 ports per box).
- Universal PCI Compatibility: Operates in both 3.3V and 5V, 33MHz PCI slots, ensuring compatibility with modern and legacy systems.
- Single IRQ Resource: All 24 ports share one IRQ assigned by the PCI BIOS, minimizing system resource usage.
- Flexible Address Mapping: Supports both memory-mapped and I/O-mapped configurations for optimal system integration.
- High-Speed Communication: Each port supports baud rates from 110 to 115,200 bps, with UNIX compatibility mappings for 50, 75, 150 bps equivalents.
- Independent RS422/RS485 Configuration: Each port can be individually configured via DIP switches.
- Hardware and Software Flow Control: Supports RTS/CTS hardware handshake and XON/XOFF software control.
- Comprehensive OS Support: Drivers available for DOS, Windows 95/98/Me/NT/2000/XP/Vista/7, Linux, and SCO OpenServer.
- Industrial Isolation: Each port is ground-isolated to prevent ground loops and electrical interference.
- Compact Design: Occupies a single PCI slot while providing 24 serial channels.
- Included Accessories: Supplied with A640 0.7m cable and three IF208 connector boxes.
- Upgradeable Architecture: Compatible with Rayon’s intelligent PCIIOP series and connector boxes.

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### 3. Technical Specifications

System Structure:
- P640NU intelligent multi-port PCI card
- Three IF208 connector boxes (8 ports each)
- A640 interconnect cable (0.7 m)

Bus Interface:
- PCI 2.2 compliant
- 33 MHz, 32-bit PCI bus
- Supports both 3.3V and 5V signaling environments
- Maximum two cards per system

Memory and I/O Mapping:
- Memory Map Mode:
- 128 bytes for PCI controller
- Two 4 KB regions for UART controllers
- I/O Map Mode:
- 128 bytes for PCI controller
- 256 bytes for UART controller
- 64 bytes for status registers
- IRQ: Single IRQ assigned by PCI BIOS

Port Configuration:
- 24 isolated RS422/RS485 ports (via three IF208 boxes)
- Each port selectable as RS422 or RS485
- DB9 male connectors per port
- Independent DIP switch configuration per channel

Baud Rate:
- 110 to 115,200 bps (standard)
- UNIX mapping: 50, 75, 150 bps correspond to 57,600, 76,800, and 115,200 bps

Flow Control:
- Software: XON/XOFF
- Hardware: RTS/CTS

Physical Dimensions:
- Card: 5.0 × 3.4 inches (127 × 86 mm)
- Connector Box: Standard 8-port IF208 enclosure

Environmental Conditions:
- Operating Temperature: 5°C to 40°C
- Storage Temperature: 0°C to 65°C
- Operating Humidity: 10%–90% RH (non-condensing)
- Storage Humidity: 5%–90% RH

Materials:
- PCB: Multi-layer industrial-grade FR-4
- Connectors: Gold-plated DB9 male
- Enclosure: Metal shielding for EMI protection

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### 4. Functionality

The UP2024I functions as an intelligent serial expansion card providing 24 isolated RS422/RS485 communication channels through a single PCI slot. Each port can be configured independently for RS422 (full-duplex) or RS485 (half-duplex) operation. The card’s isolation circuitry prevents ground potential differences and electrical noise from affecting data integrity.

Use Cases and Applications:
- Industrial automation and control systems
- SCADA and data acquisition networks
- Multi-terminal serial communication servers
- POS and kiosk systems requiring multiple serial interfaces
- Laboratory instrumentation and monitoring systems
- Embedded Linux or UNIX-based communication servers

Compatibility:
- Hardware: PC/AT compatible systems with available PCI slot
- Software: DOS, Windows (95 through 7), Linux, SCO OpenServer
- Supports both legacy and modern operating systems with dedicated drivers

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### 5. Components & Accessories

Included Components:
- 1 × P640NU PCI intelligent multi-port card
- 3 × IF208 isolated RS422/RS485 connector boxes (8 ports each)
- 1 × A640 0.7 m interconnect cable
- Driver and documentation package (supports multiple OS platforms)

Optional Accessories:
- Additional IF208 boxes for expansion
- PCIIOP intelligent processor upgrade cards (e.g., P990F, IOP3927F)
- Extended cables and mounting brackets for rack or panel installation

Connectors:
- DB9 male connectors per port
- 37-pin D-type connectors between card and boxes
- Daisy-chain capability for multi-box expansion

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### 6. Installation & Setup

Hardware Installation:
1. Power off the PC and disconnect AC power.
2. Insert the UP2024I card into an available PCI slot (3.3V or 5V).
3. Connect the A640 cable between the card and the first IF208 box.
4. Daisy-chain additional IF208 boxes using the provided connectors.
5. Secure boxes using brackets if multiple units are mounted.
6. Power on the system and verify BIOS detection.

Software Installation:
- DOS/Windows 95/98/Me: Use I/O map mode drivers.
- Windows NT/2000/XP/Vista/7: Plug & Play installation; specify driver path (A:\WIN2000).
- Linux: Install source-based driver from /etc/rayon directory; compile against kernel source.
- SCO OpenServer: Use /etc/custom or tar-based installation; rebuild kernel after driver linking.

Configuration:
- DIP switches on each port select RS422 or RS485 mode.
- COM port numbering and IRQ assignment managed by PCI BIOS.
- Linux and UNIX systems use device naming conventions such as /dev/tty6[1–8][a–h].

Mounting Options:
- Desktop or rack-mountable IF208 boxes
- Daisy-chain up to three boxes per card (24 ports total)

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### 7. Performance & Capabilities

Communication Speed:
- 110–115,200 bps per port (standard)
- UNIX-compatible baud mapping for legacy systems

Capacity:
- 24 isolated serial ports per card
- Up to 2 cards per system (48 ports total)

Efficiency:
- Single IRQ for all ports reduces CPU overhead
- Intelligent UART management for high-throughput serial communication
- Ground isolation ensures signal integrity in noisy environments

Limitations:
- Maximum of two cards per system
- Operating temperature limited to 40°C
- Requires proper driver installation for full OS support

Reliability:
- Industrial-grade isolation and EMI protection
- Proven compatibility with multiple operating systems
- Stable operation in multi-user and multi-process environments

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### 8. Standards & Compliance

Electrical and Interface Standards:
- RS422 and RS485 compliant (TIA/EIA-422-B, TIA/EIA-485-A)
- PCI Local Bus Specification 2.2 compliant
- Supports both 3.3V and 5V signaling environments

Safety and Environmental Compliance:
- Ground isolation per industrial standards
- Designed for EMI/ESD resilience
- RoHS-compliant manufacturing (lead-free PCB and connectors)

Software and Driver Standards:
- Fully compliant with Windows Plug & Play architecture
- Linux driver source compatible with kernel 2.2, 2.4, and 2.6
- SCO UNIX kernel integration supported via Link Kit

Industry Certifications:
- CE and FCC Class A (industrial environment)
- ISO 9001:2000 manufacturing process compliance (Rayon Technology)

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### 9. Additional Information

Warranty:
- 1-year limited hardware warranty covering defects in materials and workmanship.
- Excludes damage from misuse, electrical surges, or unauthorized servicing.

Support & Maintenance:
- Technical support via email (rayon@ms1.hinet.net)
- Driver updates and documentation available on [www.rayontech.com](http://www.rayontech.com)
- RMA (Return Material Authorization) process available for defective units.
- Repair services offered for out-of-warranty products at flat-rate charges.

Maintenance Recommendations:
- Ensure proper grounding and isolation during installation.
- Avoid hot-swapping connector boxes while powered.
- Periodically inspect cables and connectors for wear or oxidation.
- Update drivers when upgrading operating systems.

Upgrade Path:
- Compatible with Rayon’s PCIIOP intelligent processor cards (e.g., IOP3927F, P990F).
- Connector boxes interchangeable with other Rayon multi-port solutions (F641, F642, IF308, etc.).
- Supports future OS driver updates for extended lifecycle.

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### Summary

The Rayon UP2024I Universal PCI Multi-Port Serial Card is a robust, industrial-grade communication interface designed for systems requiring multiple isolated RS422/RS485 channels. Its intelligent architecture, universal PCI compatibility, and comprehensive driver support make it ideal for demanding industrial, commercial, and research applications. With 24 isolated ports, flexible configuration, and proven reliability, the UP2024I delivers high-performance serial communication while minimizing system resource consumption. It stands as a scalable, future-proof solution for multi-serial connectivity in both legacy and modern computing environments.