Comprehensive Product Summary – RAYON UP2008I (UPCI Isolated 8×RS422/RS485 Intelligent Solution)

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### 1. Product Overview

Product Name: UP2008I
Article Number: UP2008I
Series: UPCI Intelligent Multi-Port Serial Solution
Model Description: UPCI 3.3V 8-Port Ground-Isolated RS422/RS485 Intelligent Serial PCI Card
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
Websites: [www.rayontech.com](http://www.rayontech.com), [www.computex.com.tw/rayon](http://www.computex.com.tw/rayon)

The UP2008I is a universal PCI intelligent serial communication card designed to provide eight fully ground-isolated RS422/RS485 ports through a single PCI slot. It is part of RAYON’s UPCI/PCIPORT family of intelligent multi-port serial solutions, engineered for industrial, automation, and multi-user computing environments requiring robust, isolated, and high-performance serial communication.

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### 2. Key Features

- Eight Ground-Isolated Serial Ports: Supports 8 independent RS422/RS485 ports with full ground isolation, ensuring signal integrity and protection against electrical noise and ground loops.
- Universal PCI Compatibility: Operates in both 3.3V and 5V, 33MHz PCI slots, supporting modern and legacy PC architectures.
- Single IRQ Resource: All eight ports share one IRQ, minimizing system resource usage and simplifying configuration.
- Flexible Address Mapping: Supports both memory-mapped and I/O-mapped modes, selectable via PCI BIOS configuration.
- High-Speed Communication: Each port supports baud rates from 110 to 115,200 bps (software-selectable).
- Independent Port Configuration: Each channel can be configured individually as RS422 or RS485 via DIP switches.
- Hardware and Software Flow Control: Supports XON/XOFF (software) and RTS/CTS (hardware) handshaking.
- Cross-Platform Driver Support: Compatible with DOS, Windows 95/98/Me, NT, 2000, XP, Vista, Windows 7, Linux, and SCO OpenServer.
- Industrial-Grade Isolation: Designed for industrial environments with robust isolation and EMI protection.
- Expandable System Architecture: Supports up to two cards per system, providing up to 16 isolated serial ports.
- Bundled Accessories: Includes A640 0.7m cable and IF208 connector box for 8-port RS422/RS485 interface.
- Metal Enclosure Option: Available in card-only or metal box configurations for rack or panel installations.

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### 3. Technical Specifications

System Structure Components:
- P640NU Intelligent Multi-Port PCI Card
- IF208 Connector Box (8-Port Ground-Isolated RS422/RS485)
- A640 Cable (0.7m, 37-pin D-type)

Electrical & Bus Interface:
- PCI Bus: 3.3V/5V, 33MHz, 32-bit PCI slot
- Maximum Cards per System: 2
- IRQ: Single shared IRQ assigned by PCI BIOS

Memory and I/O Mapping:
- Memory Map Mode:
- 128 bytes for PCI controller
- Two 4KB blocks for UART controllers
- I/O Map Mode:
- 128 bytes I/O for PCI controller
- 256 bytes I/O for UART controller
- 64 bytes I/O for status registers

Port Configuration:
- 8 independent RS422/RS485 ports
- Each port selectable via DIP switch
- Connector type: DB9 male (on IF208 box)
- Isolation: Full ground isolation per port

Baud Rate:
- 110 to 115,200 bps (standard)
- UNIX/Linux compatibility mapping:
- 50 bps → 57,600 bps
- 75 bps → 76,800 bps
- 150 bps → 115,200 bps

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

Physical Dimensions:
- PCI Card: 5.0 × 3.4 inches (127 × 86 mm)
- IF208 Box: 8-port DB9 male interface, metal 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 D-sub connectors
- Enclosure: Aluminum alloy (optional metal box)

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### 4. Functionality

The UP2008I functions as an intelligent serial communication interface card that offloads serial data handling from the host CPU. It provides eight isolated RS422/RS485 ports for connecting industrial devices such as PLCs, sensors, data acquisition modules, and serial terminals.

Operation Principle:
- The P640NU PCI card interfaces with the host system via the PCI bus.
- The IF208 connector box provides eight isolated serial channels.
- Each port can be configured as RS422 (full-duplex) or RS485 (half-duplex multi-drop).
- DIP switches on the IF208 box determine the mode per port.
- The A640 cable connects the PCI card to the IF208 box via a 37-pin D-type connector.

Typical Applications:
- Industrial automation and control systems
- SCADA and data acquisition networks
- Multi-terminal communication servers
- Serial device networking and monitoring
- Embedded system integration requiring isolated serial communication

Compatibility:
- Fully compatible with standard RS422/RS485 signaling
- Supports both point-to-point and multi-drop bus configurations
- Compatible with major operating systems and driver frameworks

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### 5. Components & Accessories

Included in Standard Package:
- UP2008I PCI card (P640NU)
- IF208 8-port isolated RS422/RS485 connector box
- A640 0.7m 37-pin D-type cable
- Driver and utility software (DOS/Windows/Linux/SCO)
- Documentation and installation guide

Optional Accessories:
- Extended cables (A641/A642 series)
- Metal mounting brackets for multi-box daisy-chain configurations
- Additional IF208 boxes for expansion
- RS232/RS485 converter modules (TWIN232/TWIN485 series)

Connectors:
- PCI edge connector (3.3V/5V)
- 37-pin D-type male connector (card to box)
- DB9 male connectors (on IF208 box, 8 ports)

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### 6. Installation & Setup

Hardware Installation:
1. Power off the PC and disconnect AC power.
2. Insert the UP2008I card into an available PCI slot (3.3V or 5V).
3. Connect the A640 cable between the card and IF208 box.
4. Secure the IF208 box using mounting brackets if required.
5. Configure DIP switches on the IF208 box for RS422 or RS485 per port.
6. Power on the system and verify PCI detection in BIOS.

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

Configuration:
- COM port numbering is automatically assigned; can be modified via driver setup utility.
- In Linux, device names follow `/dev/tty[6–7][1–8][a–h]` convention.
- In Windows, ports appear as COM3–COM10 by default.

Mounting Options:
- Desktop or rack-mountable IF208 box
- Daisy-chain up to 8 boxes using 37-pin interconnect cables

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### 7. Performance & Capabilities

Data Throughput:
- Up to 115.2 kbps per port (standard)
- Supports full-duplex (RS422) and half-duplex (RS485) modes

Capacity:
- 8 ports per card, 2 cards per system (16 ports total)
- Each port independently configurable

Efficiency:
- Single IRQ for all ports reduces CPU overhead
- Intelligent UART buffering (4KB per controller) ensures stable high-speed communication

Limitations:
- Maximum 2 cards per system (due to IRQ and resource mapping)
- Baud rate limited to 115.2 kbps (standard UART limitation)
- Requires proper driver installation for OS recognition

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### 8. Standards & Compliance

Electrical & Interface Standards:
- RS422 (TIA/EIA-422-B)
- RS485 (TIA/EIA-485-A)
- PCI Local Bus Specification Revision 2.2
- Universal PCI (3.3V/5V) compliance

Environmental & Safety:
- Designed for industrial temperature and humidity ranges
- Ground isolation per port for electrical safety

Software & OS Compliance:
- Microsoft Windows Hardware Compatibility (legacy systems)
- Linux kernel module compliance (2.2–2.6 series)
- SCO OpenServer 5.0.x driver integration

Certifications:
- CE and FCC Class A (industrial environment)
- RoHS-compliant manufacturing

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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 RAYON’s website
- RMA (Return Material Authorization) procedure available for defective units

Maintenance Recommendations:
- Ensure proper grounding and isolation when connecting industrial equipment.
- Avoid hot-plugging the 37-pin cable while the system is powered.
- Periodically inspect connectors and cables for wear or oxidation.

Upgrade Path:
- P640NU card can be upgraded to PCIIOP intelligent series (e.g., IOP3927F with 133MHz MIPS CPU).
- Compatible with RAYON’s modular connector boxes (F641/F642/IF208 series).

Related Products:
- P990F: Intelligent PCI card with Intel 80960JF processor.
- IOP3927F: 133MHz MIPS-based intelligent I/O processor card.
- TWIN232/TWIN485: RS232/RS422/RS485 isolator and converter modules.

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### Summary

The RAYON UP2008I (UPCI Isolated 8×RS422/RS485 Intelligent Solution) is a robust, industrial-grade PCI communication card offering eight fully isolated serial ports in a single PCI slot. Designed for high-reliability industrial and multi-user environments, it combines flexible configuration, broad OS support, and efficient resource utilization. Its universal PCI interface, intelligent memory mapping, and comprehensive driver suite make it ideal for system integrators and OEMs requiring stable, isolated, and scalable serial communication solutions.

With its modular architecture, the UP2008I can be expanded, upgraded, and integrated into complex serial communication infrastructures, ensuring long-term compatibility and performance across diverse computing platforms.