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P985
PCI 4-port RS422 Card
63,00 EUR
including VAT 74.97 EUR
- Four RS422 Serial Ports: Each port supports full-duplex RS422 communication for industrial and automation applications requiring long-distance, noise-resistant serial links.
- 16550A UART Compatibility: Each port integrates a 16C550A-compatible UART with 16-byte transmit and receive FIFOs, ensuring efficient data buffering and reduced CPU interrupts.
- High-Speed Communication: Supports baud rates from 50 bps up to 115,200 bps (standard 1.8432 MHz crystal) or up to 921,600 bps with optional 14.7456 MHz crystal.
- Plug & Play PCI Interface: Fully compliant with PCI Local Bus Specification Rev. 2.1. All I/O addresses, IRQs, and memory mappings are automatically assigned by the PCI BIOS.
- Shared IRQ Support: Allows multiple PCI cards to share a single interrupt request line, optimizing system resource allocation.
- Flexible Flow Control: Supports both hardware (RTS/CTS) and software (XON/XOFF) flow control mechanisms.
- Comprehensive OS Support: Compatible with DOS, Windows 95/98/ME/NT/2000/XP, Linux, and SCO OpenServer.
- Expansion Cable Included: Ships with a DB37 female to 4×DB9 male breakout cable (DB25 male version available on request as P985-25).
- Dual-Card System Support: Up to two P985 cards can be installed in a single system, providing up to eight RS422 ports.
- Compact Design: PCB dimensions of 121 mm × 102 mm, suitable for standard PCI slots.
- Industrial-Grade Reliability: Engineered for stable operation in industrial and embedded PC environments.
- 16550A UART Compatibility: Each port integrates a 16C550A-compatible UART with 16-byte transmit and receive FIFOs, ensuring efficient data buffering and reduced CPU interrupts.
- High-Speed Communication: Supports baud rates from 50 bps up to 115,200 bps (standard 1.8432 MHz crystal) or up to 921,600 bps with optional 14.7456 MHz crystal.
- Plug & Play PCI Interface: Fully compliant with PCI Local Bus Specification Rev. 2.1. All I/O addresses, IRQs, and memory mappings are automatically assigned by the PCI BIOS.
- Shared IRQ Support: Allows multiple PCI cards to share a single interrupt request line, optimizing system resource allocation.
- Flexible Flow Control: Supports both hardware (RTS/CTS) and software (XON/XOFF) flow control mechanisms.
- Comprehensive OS Support: Compatible with DOS, Windows 95/98/ME/NT/2000/XP, Linux, and SCO OpenServer.
- Expansion Cable Included: Ships with a DB37 female to 4×DB9 male breakout cable (DB25 male version available on request as P985-25).
- Dual-Card System Support: Up to two P985 cards can be installed in a single system, providing up to eight RS422 ports.
- Compact Design: PCB dimensions of 121 mm × 102 mm, suitable for standard PCI slots.
- Industrial-Grade Reliability: Engineered for stable operation in industrial and embedded PC environments.
Comprehensive Product Summary – Rayon Technology Inc. P985 PCI 4-Port RS422 Card
### 1. Product Overview
Product Name: PCI 4-Port RS422 Card
Model: P985
Series: RAYON PCIPORT Series
Article Number: P985
Manufacturer: Rayon Technology Inc.
Manufacturer Locations:
- Headquarters: Rayon Technology Co. Ltd., 2F, No. 177, Chung-Shan 2 Road, Lu-Chou City, Taipei Hsien, Taiwan R.O.C.
- European Support: Acceed GmbH, Arnoldstraße 19, 40479 Düsseldorf, Germany
Product Description:
The Rayon P985 is an intelligent PCI-based serial communication controller card providing four independent RS422 serial ports. Designed for PC/AT systems with a 5V 33MHz PCI bus, the P985 delivers high-performance, buffered serial communication with minimal CPU overhead. It is fully plug-and-play compliant, supports shared IRQ mapping, and is compatible with multiple operating systems including DOS, Windows (95/98/ME/NT/2000/XP), Linux, and SCO OpenServer.
### 2. Key Features
- Four RS422 Serial Ports: Each port supports full-duplex RS422 communication for industrial and automation applications requiring long-distance, noise-resistant serial links.
- 16550A UART Compatibility: Each port integrates a 16C550A-compatible UART with 16-byte transmit and receive FIFOs, ensuring efficient data buffering and reduced CPU interrupts.
- High-Speed Communication: Supports baud rates from 50 bps up to 115,200 bps (standard 1.8432 MHz crystal) or up to 921,600 bps with optional 14.7456 MHz crystal.
- Plug & Play PCI Interface: Fully compliant with PCI Local Bus Specification Rev. 2.1. All I/O addresses, IRQs, and memory mappings are automatically assigned by the PCI BIOS.
- Shared IRQ Support: Allows multiple PCI cards to share a single interrupt request line, optimizing system resource allocation.
- Flexible Flow Control: Supports both hardware (RTS/CTS) and software (XON/XOFF) flow control mechanisms.
- Comprehensive OS Support: Compatible with DOS, Windows 95/98/ME/NT/2000/XP, Linux, and SCO OpenServer.
- Expansion Cable Included: Ships with a DB37 female to 4×DB9 male breakout cable (DB25 male version available on request as P985-25).
- Dual-Card System Support: Up to two P985 cards can be installed in a single system, providing up to eight RS422 ports.
- Compact Design: PCB dimensions of 121 mm × 102 mm, suitable for standard PCI slots.
- Industrial-Grade Reliability: Engineered for stable operation in industrial and embedded PC environments.
### 3. Technical Specifications
Bus Interface:
- PCI Local Bus Specification Rev. 2.1 compliant
- 5V, 33MHz PCI slot (universal PCI not required)
- Plug & Play configuration via PCI BIOS
Serial Controller:
- 16C550A-compatible UART per port
- 16-byte transmit and receive FIFOs
- Clock frequency: 1.8432 MHz (standard), optional 14.7456 MHz
Communication Interface:
- RS422 differential signaling
- Full-duplex operation
- 4 independent ports
Baud Rate:
- 50 bps to 115,200 bps (standard)
- Up to 921,600 bps with optional high-speed crystal
Flow Control:
- Hardware: RTS/CTS
- Software: XON/XOFF
Interrupt Control:
- IRQ assigned automatically by PCI BIOS
- IRQ sharing supported
I/O Mapping:
- Automatically assigned by PCI BIOS
- 6 × 8-byte I/O blocks per card
Connectors:
- On-board: DB37 female connector
- Breakout cable: DB37F to 4×DB9M (standard) or 4×DB25M (optional)
Dimensions:
- 121 mm (L) × 102 mm (H)
Weight:
- Approx. 120 g (card only)
Material:
- Multi-layer PCB with gold-plated edge connector
Environmental Requirements:
- Operating environment: PC/AT compatible system with 5V PCI slot
- Operating temperature: 0°C to 55°C (typical)
- Storage temperature: -20°C to 85°C
- Relative humidity: 5%–95% non-condensing
### 4. Functionality
Operational Overview:
The P985 card provides four independent RS422 serial communication channels. Each channel uses differential signaling to ensure reliable data transmission over long distances and in electrically noisy environments. The card’s intelligent buffering and interrupt management minimize CPU load, allowing high-throughput serial communication without data loss.
Use Cases and Applications:
- Industrial automation and control systems
- Data acquisition and instrumentation
- Point-of-sale (POS) and kiosk systems
- SCADA and telemetry networks
- Serial device networking (PLC, CNC, sensors, modems)
- Embedded PC systems requiring multiple serial interfaces
Compatibility:
- Compatible with standard PCI slots in desktop or industrial PCs
- Supports up to two P985 cards per system (8 ports total)
- Works with RS422-compatible devices and peripherals
Communication Protocols:
- RS422 full-duplex differential signaling
- Supports asynchronous serial communication
### 5. Components & Accessories
Included Items:
- 1 × P985 PCI interface card
- 1 × DB37-to-4×DB9 male expansion cable (standard)
- 1 × User manual
Optional Accessories:
- DB37-to-4×DB25 male cable (P985-25 variant)
- A640 DB37-to-DB37 cable for connection to RS4232-4 isolation box
- RS4232-4 isolation box (for converting RS232 to isolated RS422/RS485)
- TB485 converter (DB9 to 3-pin terminal block for RS485 wiring)
Connector Pin Assignments:
- DB37 female connector pinout supports four RS422 channels (A–D)
- Each port includes TXD±, RXD±, RTS, CTS, DTR, DSR, DCD, and GND signals
### 6. Installation & Setup
System Requirements:
- PC/AT compatible system with available 5V 33MHz PCI slot
- Supported operating systems: DOS, Windows 95/98/ME/NT/2000/XP, Linux, SCO OpenServer
Installation Procedure:
1. Power off the system and disconnect AC power.
2. Set the JP1 jumper to define card number (ON = first card, OFF = second card).
3. Insert the P985 card into an available PCI slot.
4. Connect the DB37 expansion cable to the card.
5. Power on the system.
6. Install the appropriate driver for your operating system.
Driver Installation:
- Windows 2000/XP: Plug & Play detection; specify driver path (A:\WIN2000).
- Windows NT4: Manual installation via Control Panel → Network → Add Adapter → “Other” → specify A:\P984\NT4.
- Windows 95/98/ME: Plug & Play detection; specify A:\WIN95.
- DOS: Run `PCIPORT` or `P984` from the DOS driver directory.
- Linux: Copy driver source to `/etc/rayon`, run `./Install`, rebuild kernel modules.
- SCO OpenServer: Use `/etc/custom` or manual installation via `/etc/pciport/build`.
Multi-Card Configuration:
- Up to two P985 cards per system.
- First card: JP1 ON; Second card: JP1 OFF.
- Cards can share IRQs if supported by the operating system.
Caution:
Do not insert or remove the card while the system is powered on. Use anti-static precautions during installation.
### 7. Performance & Capabilities
Data Throughput:
- Up to 115.2 kbps per port (standard)
- Up to 921.6 kbps with optional high-speed crystal
Buffering:
- 16-byte transmit and receive FIFOs per port
- Reduces CPU interrupt frequency and improves multitasking performance
Interrupt Handling:
- Shared IRQ support for efficient resource utilization
- Automatic PCI BIOS assignment
Capacity:
- 4 independent RS422 ports per card
- Up to 8 ports with two cards installed
Efficiency:
- Intelligent buffering minimizes CPU load
- Plug & Play configuration eliminates manual resource conflicts
Limitations:
- RS422 only (no RS485 mode on this model)
- Maximum of two cards per system
- Requires 5V PCI slot (not universal 3.3V)
### 8. Standards & Compliance
Bus Standard:
- PCI Local Bus Specification Revision 2.1
Interface Standards:
- RS422 (EIA/TIA-422) differential signaling standard
Electrical Compliance:
- 5V PCI signaling environment
- Meets industrial EMC and ESD protection norms (typical for Rayon PCIPORT series)
Software & OS Compatibility:
- Microsoft Windows 95/98/ME/NT/2000/XP
- DOS
- Linux (kernel 2.4.x and later, source-based driver installation)
- SCO OpenServer
Regulatory Compliance:
- CE and FCC Class A (typical for industrial PCI cards)
- RoHS compliance (for later production batches)
### 9. Additional Information
Warranty:
- 1-year limited warranty covering defects in materials and workmanship
- Excludes damage from misuse, electrical surges, or unauthorized servicing
Support & Service:
- Taiwan: rayon@ms1.hinet.net
- Europe: rayon@acceed.com
- Web: [www.acceed.com/rayon](http://www.acceed.com/rayon)
Repair & RMA Procedure:
- Obtain Return Material Authorization (RMA) before returning products
- Provide model number, serial number, reason for return, and purchase order reference
- Products under warranty repaired at no cost; out-of-warranty repairs subject to flat-rate service charge
Maintenance:
- No periodic maintenance required
- Keep connectors clean and free of dust
- Avoid electrostatic discharge during handling
Software Updates:
- Updated drivers available from Rayon or Acceed support websites
- Linux driver source provided for kernel recompilation
Documentation:
- Comprehensive user manual (Rev. 1.00, October 19, 2003)
- Includes pin assignments, jumper settings, driver installation guides, and troubleshooting procedures
### Summary
The Rayon P985 PCI 4-Port RS422 Card is a robust, high-performance serial communication solution designed for industrial and embedded PC environments requiring multiple RS422 interfaces. With intelligent buffering, full PCI Plug & Play compliance, and broad OS support, the P985 simplifies multi-port serial integration while maintaining high data integrity and low CPU overhead. Its modular cable system and optional isolation accessories make it adaptable to a wide range of serial communication applications, from factory automation to data acquisition systems.
Key Advantages:
- Reliable RS422 communication across four independent ports
- High-speed, buffered UARTs for efficient data handling
- Seamless integration with modern and legacy operating systems
- Expandable to eight ports per system
- Backed by Rayon’s global support and one-year warranty
The P985 exemplifies Rayon Technology’s engineering focus on connectivity, performance, and industrial reliability—making it a trusted choice for professional serial communication applications.
### 1. Product Overview
Product Name: PCI 4-Port RS422 Card
Model: P985
Series: RAYON PCIPORT Series
Article Number: P985
Manufacturer: Rayon Technology Inc.
Manufacturer Locations:
- Headquarters: Rayon Technology Co. Ltd., 2F, No. 177, Chung-Shan 2 Road, Lu-Chou City, Taipei Hsien, Taiwan R.O.C.
- European Support: Acceed GmbH, Arnoldstraße 19, 40479 Düsseldorf, Germany
Product Description:
The Rayon P985 is an intelligent PCI-based serial communication controller card providing four independent RS422 serial ports. Designed for PC/AT systems with a 5V 33MHz PCI bus, the P985 delivers high-performance, buffered serial communication with minimal CPU overhead. It is fully plug-and-play compliant, supports shared IRQ mapping, and is compatible with multiple operating systems including DOS, Windows (95/98/ME/NT/2000/XP), Linux, and SCO OpenServer.
### 2. Key Features
- Four RS422 Serial Ports: Each port supports full-duplex RS422 communication for industrial and automation applications requiring long-distance, noise-resistant serial links.
- 16550A UART Compatibility: Each port integrates a 16C550A-compatible UART with 16-byte transmit and receive FIFOs, ensuring efficient data buffering and reduced CPU interrupts.
- High-Speed Communication: Supports baud rates from 50 bps up to 115,200 bps (standard 1.8432 MHz crystal) or up to 921,600 bps with optional 14.7456 MHz crystal.
- Plug & Play PCI Interface: Fully compliant with PCI Local Bus Specification Rev. 2.1. All I/O addresses, IRQs, and memory mappings are automatically assigned by the PCI BIOS.
- Shared IRQ Support: Allows multiple PCI cards to share a single interrupt request line, optimizing system resource allocation.
- Flexible Flow Control: Supports both hardware (RTS/CTS) and software (XON/XOFF) flow control mechanisms.
- Comprehensive OS Support: Compatible with DOS, Windows 95/98/ME/NT/2000/XP, Linux, and SCO OpenServer.
- Expansion Cable Included: Ships with a DB37 female to 4×DB9 male breakout cable (DB25 male version available on request as P985-25).
- Dual-Card System Support: Up to two P985 cards can be installed in a single system, providing up to eight RS422 ports.
- Compact Design: PCB dimensions of 121 mm × 102 mm, suitable for standard PCI slots.
- Industrial-Grade Reliability: Engineered for stable operation in industrial and embedded PC environments.
### 3. Technical Specifications
Bus Interface:
- PCI Local Bus Specification Rev. 2.1 compliant
- 5V, 33MHz PCI slot (universal PCI not required)
- Plug & Play configuration via PCI BIOS
Serial Controller:
- 16C550A-compatible UART per port
- 16-byte transmit and receive FIFOs
- Clock frequency: 1.8432 MHz (standard), optional 14.7456 MHz
Communication Interface:
- RS422 differential signaling
- Full-duplex operation
- 4 independent ports
Baud Rate:
- 50 bps to 115,200 bps (standard)
- Up to 921,600 bps with optional high-speed crystal
Flow Control:
- Hardware: RTS/CTS
- Software: XON/XOFF
Interrupt Control:
- IRQ assigned automatically by PCI BIOS
- IRQ sharing supported
I/O Mapping:
- Automatically assigned by PCI BIOS
- 6 × 8-byte I/O blocks per card
Connectors:
- On-board: DB37 female connector
- Breakout cable: DB37F to 4×DB9M (standard) or 4×DB25M (optional)
Dimensions:
- 121 mm (L) × 102 mm (H)
Weight:
- Approx. 120 g (card only)
Material:
- Multi-layer PCB with gold-plated edge connector
Environmental Requirements:
- Operating environment: PC/AT compatible system with 5V PCI slot
- Operating temperature: 0°C to 55°C (typical)
- Storage temperature: -20°C to 85°C
- Relative humidity: 5%–95% non-condensing
### 4. Functionality
Operational Overview:
The P985 card provides four independent RS422 serial communication channels. Each channel uses differential signaling to ensure reliable data transmission over long distances and in electrically noisy environments. The card’s intelligent buffering and interrupt management minimize CPU load, allowing high-throughput serial communication without data loss.
Use Cases and Applications:
- Industrial automation and control systems
- Data acquisition and instrumentation
- Point-of-sale (POS) and kiosk systems
- SCADA and telemetry networks
- Serial device networking (PLC, CNC, sensors, modems)
- Embedded PC systems requiring multiple serial interfaces
Compatibility:
- Compatible with standard PCI slots in desktop or industrial PCs
- Supports up to two P985 cards per system (8 ports total)
- Works with RS422-compatible devices and peripherals
Communication Protocols:
- RS422 full-duplex differential signaling
- Supports asynchronous serial communication
### 5. Components & Accessories
Included Items:
- 1 × P985 PCI interface card
- 1 × DB37-to-4×DB9 male expansion cable (standard)
- 1 × User manual
Optional Accessories:
- DB37-to-4×DB25 male cable (P985-25 variant)
- A640 DB37-to-DB37 cable for connection to RS4232-4 isolation box
- RS4232-4 isolation box (for converting RS232 to isolated RS422/RS485)
- TB485 converter (DB9 to 3-pin terminal block for RS485 wiring)
Connector Pin Assignments:
- DB37 female connector pinout supports four RS422 channels (A–D)
- Each port includes TXD±, RXD±, RTS, CTS, DTR, DSR, DCD, and GND signals
### 6. Installation & Setup
System Requirements:
- PC/AT compatible system with available 5V 33MHz PCI slot
- Supported operating systems: DOS, Windows 95/98/ME/NT/2000/XP, Linux, SCO OpenServer
Installation Procedure:
1. Power off the system and disconnect AC power.
2. Set the JP1 jumper to define card number (ON = first card, OFF = second card).
3. Insert the P985 card into an available PCI slot.
4. Connect the DB37 expansion cable to the card.
5. Power on the system.
6. Install the appropriate driver for your operating system.
Driver Installation:
- Windows 2000/XP: Plug & Play detection; specify driver path (A:\WIN2000).
- Windows NT4: Manual installation via Control Panel → Network → Add Adapter → “Other” → specify A:\P984\NT4.
- Windows 95/98/ME: Plug & Play detection; specify A:\WIN95.
- DOS: Run `PCIPORT` or `P984` from the DOS driver directory.
- Linux: Copy driver source to `/etc/rayon`, run `./Install`, rebuild kernel modules.
- SCO OpenServer: Use `/etc/custom` or manual installation via `/etc/pciport/build`.
Multi-Card Configuration:
- Up to two P985 cards per system.
- First card: JP1 ON; Second card: JP1 OFF.
- Cards can share IRQs if supported by the operating system.
Caution:
Do not insert or remove the card while the system is powered on. Use anti-static precautions during installation.
### 7. Performance & Capabilities
Data Throughput:
- Up to 115.2 kbps per port (standard)
- Up to 921.6 kbps with optional high-speed crystal
Buffering:
- 16-byte transmit and receive FIFOs per port
- Reduces CPU interrupt frequency and improves multitasking performance
Interrupt Handling:
- Shared IRQ support for efficient resource utilization
- Automatic PCI BIOS assignment
Capacity:
- 4 independent RS422 ports per card
- Up to 8 ports with two cards installed
Efficiency:
- Intelligent buffering minimizes CPU load
- Plug & Play configuration eliminates manual resource conflicts
Limitations:
- RS422 only (no RS485 mode on this model)
- Maximum of two cards per system
- Requires 5V PCI slot (not universal 3.3V)
### 8. Standards & Compliance
Bus Standard:
- PCI Local Bus Specification Revision 2.1
Interface Standards:
- RS422 (EIA/TIA-422) differential signaling standard
Electrical Compliance:
- 5V PCI signaling environment
- Meets industrial EMC and ESD protection norms (typical for Rayon PCIPORT series)
Software & OS Compatibility:
- Microsoft Windows 95/98/ME/NT/2000/XP
- DOS
- Linux (kernel 2.4.x and later, source-based driver installation)
- SCO OpenServer
Regulatory Compliance:
- CE and FCC Class A (typical for industrial PCI cards)
- RoHS compliance (for later production batches)
### 9. Additional Information
Warranty:
- 1-year limited warranty covering defects in materials and workmanship
- Excludes damage from misuse, electrical surges, or unauthorized servicing
Support & Service:
- Taiwan: rayon@ms1.hinet.net
- Europe: rayon@acceed.com
- Web: [www.acceed.com/rayon](http://www.acceed.com/rayon)
Repair & RMA Procedure:
- Obtain Return Material Authorization (RMA) before returning products
- Provide model number, serial number, reason for return, and purchase order reference
- Products under warranty repaired at no cost; out-of-warranty repairs subject to flat-rate service charge
Maintenance:
- No periodic maintenance required
- Keep connectors clean and free of dust
- Avoid electrostatic discharge during handling
Software Updates:
- Updated drivers available from Rayon or Acceed support websites
- Linux driver source provided for kernel recompilation
Documentation:
- Comprehensive user manual (Rev. 1.00, October 19, 2003)
- Includes pin assignments, jumper settings, driver installation guides, and troubleshooting procedures
### Summary
The Rayon P985 PCI 4-Port RS422 Card is a robust, high-performance serial communication solution designed for industrial and embedded PC environments requiring multiple RS422 interfaces. With intelligent buffering, full PCI Plug & Play compliance, and broad OS support, the P985 simplifies multi-port serial integration while maintaining high data integrity and low CPU overhead. Its modular cable system and optional isolation accessories make it adaptable to a wide range of serial communication applications, from factory automation to data acquisition systems.
Key Advantages:
- Reliable RS422 communication across four independent ports
- High-speed, buffered UARTs for efficient data handling
- Seamless integration with modern and legacy operating systems
- Expandable to eight ports per system
- Backed by Rayon’s global support and one-year warranty
The P985 exemplifies Rayon Technology’s engineering focus on connectivity, performance, and industrial reliability—making it a trusted choice for professional serial communication applications.
-
PCI-Port-015.pdf
Manual
