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- Dual Isolated Serial Ports: Two independent RS422/RS485 ports with galvanic ground isolation to prevent ground loops and electrical interference.
- Flexible Interface Selection: Each port can be configured individually for RS422 or RS485 operation via DIP switch settings.
- Automatic Data Direction Control (ADDC): Built-in auto-direction control for RS485 communication eliminates the need for manual RTS signal handling, ensuring seamless half-duplex operation.
- High Compatibility: Fully compatible with 16550A UART architecture, supporting standard serial communication software and drivers.
- Plug-and-Play PCI Configuration: Automatic IRQ and I/O address assignment by PCI BIOS; no manual configuration required.
- Shared IRQ Support: Allows multiple PCI cards to share a single interrupt, optimizing system resource usage.
- Wide OS Support: Compatible with DOS, Windows 95/98/ME/NT/2000/XP/2003, Linux, and SCO OpenServer.
- Industrial Reliability: Designed for industrial control applications requiring stable, noise-immune serial communication.
- Compact PCI Form Factor: Fits standard 5V 33MHz PCI slots; up to four cards can be installed per system.
- Surge and Isolation Options: The UP422I provides isolation; related models (UP422S, UP422IS) add surge protection or combined isolation and surge protection.
- Flexible Interface Selection: Each port can be configured individually for RS422 or RS485 operation via DIP switch settings.
- Automatic Data Direction Control (ADDC): Built-in auto-direction control for RS485 communication eliminates the need for manual RTS signal handling, ensuring seamless half-duplex operation.
- High Compatibility: Fully compatible with 16550A UART architecture, supporting standard serial communication software and drivers.
- Plug-and-Play PCI Configuration: Automatic IRQ and I/O address assignment by PCI BIOS; no manual configuration required.
- Shared IRQ Support: Allows multiple PCI cards to share a single interrupt, optimizing system resource usage.
- Wide OS Support: Compatible with DOS, Windows 95/98/ME/NT/2000/XP/2003, Linux, and SCO OpenServer.
- Industrial Reliability: Designed for industrial control applications requiring stable, noise-immune serial communication.
- Compact PCI Form Factor: Fits standard 5V 33MHz PCI slots; up to four cards can be installed per system.
- Surge and Isolation Options: The UP422I provides isolation; related models (UP422S, UP422IS) add surge protection or combined isolation and surge protection.
1. Product Overview
Product Name: UPCI 2-Port Ground Isolated RS422/RS485 Card
Model: UP422I
Series: RAYON PCIPORT Series
Article Number: UP422I
Manufacturer: Rayon Technology Co., Ltd.
Manufacturer Address: 2F, No. 177, Chung-Shan 2 Rd., Lu-Chou City, Taipei Hsien, Taiwan, R.O.C.
Contact: Tel: +886-2-82858362 | Fax: +886-2-82857065 | Email: rayon@ms1.hinet.net
Website: [www.rayontech.com](http://www.rayontech.com)
The UP422I is a compact, intelligent, two-port PCI serial communication card designed to provide isolated RS422 and RS485 interfaces for industrial and embedded control systems. It belongs to Rayon’s PCIPORT family of serial communication controllers, engineered to expand serial connectivity in PC-based automation environments. The card integrates advanced isolation, automatic data direction control, and plug-and-play PCI configuration, making it a cost-effective and reliable solution for adding industrial-grade serial ports to standard PCs.
2. Key Features
- Dual Isolated Serial Ports: Two independent RS422/RS485 ports with galvanic ground isolation to prevent ground loops and electrical interference.
- Flexible Interface Selection: Each port can be configured individually for RS422 or RS485 operation via DIP switch settings.
- Automatic Data Direction Control (ADDC): Built-in auto-direction control for RS485 communication eliminates the need for manual RTS signal handling, ensuring seamless half-duplex operation.
- High Compatibility: Fully compatible with 16550A UART architecture, supporting standard serial communication software and drivers.
- Plug-and-Play PCI Configuration: Automatic IRQ and I/O address assignment by PCI BIOS; no manual configuration required.
- Shared IRQ Support: Allows multiple PCI cards to share a single interrupt, optimizing system resource usage.
- Wide OS Support: Compatible with DOS, Windows 95/98/ME/NT/2000/XP/2003, Linux, and SCO OpenServer.
- Industrial Reliability: Designed for industrial control applications requiring stable, noise-immune serial communication.
- Compact PCI Form Factor: Fits standard 5V 33MHz PCI slots; up to four cards can be installed per system.
- Surge and Isolation Options: The UP422I provides isolation; related models (UP422S, UP422IS) add surge protection or combined isolation and surge protection.
3. Technical Specifications
Serial Communication Controller:
- Type: 16550A-compatible UART with programmable gain array (PGA) support
- Clock Frequency: 22.1184 MHz
- FIFO Buffer: 16-byte transmit and receive buffers per port
Interface:
- Two independent ports, each configurable as RS422 or RS485
- Isolation: Ground isolation per port
- Connector Type: Two DB9 male connectors
Baud Rate:
- Configurable from 50 to 115,200 bps
Bus Interface:
- PCI Local Bus Specification Rev. 2.1 compliant
- Slot Type: 5V, 33MHz PCI slot
- I/O Mapping: 32-byte I/O space assigned by PCI BIOS
- IRQ Mapping: Single sharable IRQ assigned by PCI BIOS
Dimensions:
- PCB Size: 125 mm (L) × 99 mm (W)
Environmental Conditions:
- Operating Temperature: 0°C to 55°C
- Storage Temperature: 0°C to 65°C
- Operating Humidity: 10% to 95% RH (non-condensing)
- Storage Humidity: 5% to 95% RH
Material:
- PCB: Multi-layer industrial-grade fiberglass (FR4)
- Connectors: Nickel-plated DB9 male connectors
4. Functionality
The UP422I card provides two isolated serial communication channels that can operate in either RS422 or RS485 mode. Each port’s mode is selectable via DIP switches, allowing flexible configuration for different network topologies.
- RS422 Mode: Supports full-duplex, point-to-point or multi-drop communication with differential signaling for noise immunity.
- RS485 Mode: Supports half-duplex, multi-drop communication with automatic data direction control (ADDC), eliminating the need for software-based RTS control.
Use Cases and Applications:
- Industrial automation and process control
- SCADA systems and data acquisition
- Building management systems
- Embedded control and instrumentation
- Serial device networking and monitoring
- RS485-based multi-drop communication networks
Compatibility:
- Works with standard serial communication software and drivers.
- Supports up to four UP422I cards per system, providing up to eight isolated serial ports.
- Compatible with other Rayon PCIPORT models for mixed-port configurations.
5. Components & Accessories
Included Components:
- UP422I PCI card (2-port isolated RS422/RS485)
- User manual and driver diskette
Optional Accessories:
- TB485: DB9 female to RS485 terminal block adapter for easy field wiring.
- RS4232-4 Box: External isolation box for converting RS232 to isolated RS232/RS422/RS485 (4 ports).
- RS4232-8 Box: External isolation box for 8-port RS422/RS485 conversion.
- R803 Cable: DB62-to-DB62 cable for connecting PCIPORT cards to RS4232-8 boxes.
- A400/P485 Cables: DB37-to-DB25 or DB37-to-DB9 cables for multi-port expansion.
Related Products:
- UP485I: 4-port isolated RS422/RS485 PCI card
- P485U: Universal 4-port RS422/RS485 card
- P8485U: Universal 8-port RS422/RS485 card
- TWIN485: Dual isolated RS232-to-RS422/RS485 converter
- TWIN232: Isolated RS232/RS422/RS485 suite
- PCIIOP: Local processor card for offloading serial communication tasks
6. Installation & Setup
System Requirements:
- PC/AT compatible system with available 5V PCI slot
- Supported operating systems: DOS, Windows 95/98/ME/NT/2000/XP/2003, Linux, SCO OpenServer
Installation Procedure:
1. Power off the PC and remove the cover.
2. Insert the UP422I card into an available PCI slot.
3. Secure the card with the bracket screw.
4. Connect external devices to the DB9 connectors.
5. Power on the system; the PCI BIOS will automatically assign I/O and IRQ resources.
6. Install the appropriate driver for your operating system.
Configuration:
- DIP Switch SW1:
- Bits 1–2: Card number (ON = first card, OFF = second card)
- Bit 3: Port A interface (ON = RS422, OFF = RS485)
- Bit 4: Port B interface (ON = RS422, OFF = RS485)
- Jumpers JP3 & JP6:
- Enable or disable 120Ω termination resistors for RS422/RS485 lines.
Driver Installation:
- Windows 2000/XP: Plug-and-play detection; specify driver path (A:\WIN2000).
- Windows NT4: Manual installation via Control Panel → Network → Add Adapter → Other → A:\P220\NT4.
- Windows 95/98/ME: Automatic detection; specify driver path (A:\WIN95).
- DOS: Run `P984` or `PCIPORT` from the driver diskette.
- Linux: Copy driver source to `/etc/rayon`, run `./Install`, rebuild kernel modules.
- SCO OpenServer: Use `/etc/custom` or manual installation via `/etc/pciport/build`.
7. Performance & Capabilities
- Baud Rate Range: 50 to 115,200 bps per port
- Data Buffering: 16-byte transmit and receive FIFO per port
- Interrupt Handling: Shared IRQ support for multiple cards
- Throughput: Optimized for low CPU overhead via buffered UART architecture
- Isolation: Electrical isolation between ports and system ground to prevent noise coupling
- Termination: Optional 120Ω termination resistors for long-distance or high-speed communication
- Maximum Cards per System: Up to four UP422I cards (eight ports total)
- Reliability: Designed for continuous operation in industrial environments
Limitations:
- RS485 mode supports half-duplex communication only.
- Maximum baud rate limited to 115.2 kbps (standard clock).
- Requires proper termination and grounding for long cable runs.
8. Standards & Compliance
- PCI Local Bus Specification: Revision 2.1 compliant
- UART Compatibility: 16550A standard
- Electrical Isolation: Meets industrial isolation standards for RS422/RS485 communication
- Operating System Drivers: Certified for Windows and Linux environments
- Environmental Compliance: Designed for industrial temperature and humidity ranges
- EMC and Safety: Conforms to general industrial EMI/ESD protection guidelines
9. Additional Information
Warranty:
- One-year limited warranty covering defects in materials and workmanship.
- Excludes damage from misuse, electrical surges, or unauthorized servicing.
- Out-of-warranty repairs available at a flat-rate service charge.
Support & Service:
- Taiwan Service Center: Rayon Technology Co., Ltd.
- Email: rayon@ms1.hinet.net
- European Support: Acceed GmbH, Düsseldorf, Germany
- Email: rayon@acceed.com
- Website: [www.acceed.com/rayon](http://www.acceed.com/rayon)
Maintenance:
- Periodically inspect connectors and ensure proper grounding.
- Avoid hot-swapping; always power down before card insertion/removal.
- Use anti-static precautions during installation.
Software Updates:
- Updated drivers and documentation available from Rayon’s website.
- Linux driver source provided for kernel integration and customization.
Repair Procedure:
- Obtain Return Material Authorization (RMA) before returning products.
- Provide model number, serial number, and problem description.
- Products under warranty repaired free of charge; handling fee applies for non-defective returns.
Summary
The Rayon UP422I is a robust, industrial-grade PCI serial communication card offering two isolated RS422/RS485 ports. It is engineered for high reliability, flexible configuration, and broad operating system compatibility. With automatic data direction control, plug-and-play PCI resource management, and comprehensive driver support, the UP422I simplifies the integration of serial communication into modern PC-based control systems. Its isolation and termination features make it ideal for electrically noisy environments, ensuring stable and interference-free data transmission across industrial networks.
Product Name: UPCI 2-Port Ground Isolated RS422/RS485 Card
Model: UP422I
Series: RAYON PCIPORT Series
Article Number: UP422I
Manufacturer: Rayon Technology Co., Ltd.
Manufacturer Address: 2F, No. 177, Chung-Shan 2 Rd., Lu-Chou City, Taipei Hsien, Taiwan, R.O.C.
Contact: Tel: +886-2-82858362 | Fax: +886-2-82857065 | Email: rayon@ms1.hinet.net
Website: [www.rayontech.com](http://www.rayontech.com)
The UP422I is a compact, intelligent, two-port PCI serial communication card designed to provide isolated RS422 and RS485 interfaces for industrial and embedded control systems. It belongs to Rayon’s PCIPORT family of serial communication controllers, engineered to expand serial connectivity in PC-based automation environments. The card integrates advanced isolation, automatic data direction control, and plug-and-play PCI configuration, making it a cost-effective and reliable solution for adding industrial-grade serial ports to standard PCs.
2. Key Features
- Dual Isolated Serial Ports: Two independent RS422/RS485 ports with galvanic ground isolation to prevent ground loops and electrical interference.
- Flexible Interface Selection: Each port can be configured individually for RS422 or RS485 operation via DIP switch settings.
- Automatic Data Direction Control (ADDC): Built-in auto-direction control for RS485 communication eliminates the need for manual RTS signal handling, ensuring seamless half-duplex operation.
- High Compatibility: Fully compatible with 16550A UART architecture, supporting standard serial communication software and drivers.
- Plug-and-Play PCI Configuration: Automatic IRQ and I/O address assignment by PCI BIOS; no manual configuration required.
- Shared IRQ Support: Allows multiple PCI cards to share a single interrupt, optimizing system resource usage.
- Wide OS Support: Compatible with DOS, Windows 95/98/ME/NT/2000/XP/2003, Linux, and SCO OpenServer.
- Industrial Reliability: Designed for industrial control applications requiring stable, noise-immune serial communication.
- Compact PCI Form Factor: Fits standard 5V 33MHz PCI slots; up to four cards can be installed per system.
- Surge and Isolation Options: The UP422I provides isolation; related models (UP422S, UP422IS) add surge protection or combined isolation and surge protection.
3. Technical Specifications
Serial Communication Controller:
- Type: 16550A-compatible UART with programmable gain array (PGA) support
- Clock Frequency: 22.1184 MHz
- FIFO Buffer: 16-byte transmit and receive buffers per port
Interface:
- Two independent ports, each configurable as RS422 or RS485
- Isolation: Ground isolation per port
- Connector Type: Two DB9 male connectors
Baud Rate:
- Configurable from 50 to 115,200 bps
Bus Interface:
- PCI Local Bus Specification Rev. 2.1 compliant
- Slot Type: 5V, 33MHz PCI slot
- I/O Mapping: 32-byte I/O space assigned by PCI BIOS
- IRQ Mapping: Single sharable IRQ assigned by PCI BIOS
Dimensions:
- PCB Size: 125 mm (L) × 99 mm (W)
Environmental Conditions:
- Operating Temperature: 0°C to 55°C
- Storage Temperature: 0°C to 65°C
- Operating Humidity: 10% to 95% RH (non-condensing)
- Storage Humidity: 5% to 95% RH
Material:
- PCB: Multi-layer industrial-grade fiberglass (FR4)
- Connectors: Nickel-plated DB9 male connectors
4. Functionality
The UP422I card provides two isolated serial communication channels that can operate in either RS422 or RS485 mode. Each port’s mode is selectable via DIP switches, allowing flexible configuration for different network topologies.
- RS422 Mode: Supports full-duplex, point-to-point or multi-drop communication with differential signaling for noise immunity.
- RS485 Mode: Supports half-duplex, multi-drop communication with automatic data direction control (ADDC), eliminating the need for software-based RTS control.
Use Cases and Applications:
- Industrial automation and process control
- SCADA systems and data acquisition
- Building management systems
- Embedded control and instrumentation
- Serial device networking and monitoring
- RS485-based multi-drop communication networks
Compatibility:
- Works with standard serial communication software and drivers.
- Supports up to four UP422I cards per system, providing up to eight isolated serial ports.
- Compatible with other Rayon PCIPORT models for mixed-port configurations.
5. Components & Accessories
Included Components:
- UP422I PCI card (2-port isolated RS422/RS485)
- User manual and driver diskette
Optional Accessories:
- TB485: DB9 female to RS485 terminal block adapter for easy field wiring.
- RS4232-4 Box: External isolation box for converting RS232 to isolated RS232/RS422/RS485 (4 ports).
- RS4232-8 Box: External isolation box for 8-port RS422/RS485 conversion.
- R803 Cable: DB62-to-DB62 cable for connecting PCIPORT cards to RS4232-8 boxes.
- A400/P485 Cables: DB37-to-DB25 or DB37-to-DB9 cables for multi-port expansion.
Related Products:
- UP485I: 4-port isolated RS422/RS485 PCI card
- P485U: Universal 4-port RS422/RS485 card
- P8485U: Universal 8-port RS422/RS485 card
- TWIN485: Dual isolated RS232-to-RS422/RS485 converter
- TWIN232: Isolated RS232/RS422/RS485 suite
- PCIIOP: Local processor card for offloading serial communication tasks
6. Installation & Setup
System Requirements:
- PC/AT compatible system with available 5V PCI slot
- Supported operating systems: DOS, Windows 95/98/ME/NT/2000/XP/2003, Linux, SCO OpenServer
Installation Procedure:
1. Power off the PC and remove the cover.
2. Insert the UP422I card into an available PCI slot.
3. Secure the card with the bracket screw.
4. Connect external devices to the DB9 connectors.
5. Power on the system; the PCI BIOS will automatically assign I/O and IRQ resources.
6. Install the appropriate driver for your operating system.
Configuration:
- DIP Switch SW1:
- Bits 1–2: Card number (ON = first card, OFF = second card)
- Bit 3: Port A interface (ON = RS422, OFF = RS485)
- Bit 4: Port B interface (ON = RS422, OFF = RS485)
- Jumpers JP3 & JP6:
- Enable or disable 120Ω termination resistors for RS422/RS485 lines.
Driver Installation:
- Windows 2000/XP: Plug-and-play detection; specify driver path (A:\WIN2000).
- Windows NT4: Manual installation via Control Panel → Network → Add Adapter → Other → A:\P220\NT4.
- Windows 95/98/ME: Automatic detection; specify driver path (A:\WIN95).
- DOS: Run `P984` or `PCIPORT` from the driver diskette.
- Linux: Copy driver source to `/etc/rayon`, run `./Install`, rebuild kernel modules.
- SCO OpenServer: Use `/etc/custom` or manual installation via `/etc/pciport/build`.
7. Performance & Capabilities
- Baud Rate Range: 50 to 115,200 bps per port
- Data Buffering: 16-byte transmit and receive FIFO per port
- Interrupt Handling: Shared IRQ support for multiple cards
- Throughput: Optimized for low CPU overhead via buffered UART architecture
- Isolation: Electrical isolation between ports and system ground to prevent noise coupling
- Termination: Optional 120Ω termination resistors for long-distance or high-speed communication
- Maximum Cards per System: Up to four UP422I cards (eight ports total)
- Reliability: Designed for continuous operation in industrial environments
Limitations:
- RS485 mode supports half-duplex communication only.
- Maximum baud rate limited to 115.2 kbps (standard clock).
- Requires proper termination and grounding for long cable runs.
8. Standards & Compliance
- PCI Local Bus Specification: Revision 2.1 compliant
- UART Compatibility: 16550A standard
- Electrical Isolation: Meets industrial isolation standards for RS422/RS485 communication
- Operating System Drivers: Certified for Windows and Linux environments
- Environmental Compliance: Designed for industrial temperature and humidity ranges
- EMC and Safety: Conforms to general industrial EMI/ESD protection guidelines
9. Additional Information
Warranty:
- One-year limited warranty covering defects in materials and workmanship.
- Excludes damage from misuse, electrical surges, or unauthorized servicing.
- Out-of-warranty repairs available at a flat-rate service charge.
Support & Service:
- Taiwan Service Center: Rayon Technology Co., Ltd.
- Email: rayon@ms1.hinet.net
- European Support: Acceed GmbH, Düsseldorf, Germany
- Email: rayon@acceed.com
- Website: [www.acceed.com/rayon](http://www.acceed.com/rayon)
Maintenance:
- Periodically inspect connectors and ensure proper grounding.
- Avoid hot-swapping; always power down before card insertion/removal.
- Use anti-static precautions during installation.
Software Updates:
- Updated drivers and documentation available from Rayon’s website.
- Linux driver source provided for kernel integration and customization.
Repair Procedure:
- Obtain Return Material Authorization (RMA) before returning products.
- Provide model number, serial number, and problem description.
- Products under warranty repaired free of charge; handling fee applies for non-defective returns.
Summary
The Rayon UP422I is a robust, industrial-grade PCI serial communication card offering two isolated RS422/RS485 ports. It is engineered for high reliability, flexible configuration, and broad operating system compatibility. With automatic data direction control, plug-and-play PCI resource management, and comprehensive driver support, the UP422I simplifies the integration of serial communication into modern PC-based control systems. Its isolation and termination features make it ideal for electrically noisy environments, ensuring stable and interference-free data transmission across industrial networks.
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UP422I_Catalog.pdf
PDF Catalog
-
PCI-Port-015.pdf
Manual
No accessories available.
