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- Eight Independent Serial Ports:
Four ports (A–D) support RS485 only; four ports (E–H) are independently selectable for RS232, RS422, or RS485 operation.
- Universal PCI Interface:
Compatible with both 5V and 3.3V PCI slots (33 MHz), ensuring broad motherboard compatibility.
- 5V Power-Only Design:
Operates solely from the 5V PCI rail, simplifying power requirements and improving stability.
- Auto-Data-Direction-Control for RS485:
Built-in automatic data direction control eliminates the need for manual RTS signal management in half-duplex RS485 communication.
- Plug & Play Resource Assignment:
IRQ and I/O address mapping are automatically assigned by the PCI BIOS, supporting shared IRQ configurations.
- High-Speed Serial Communication:
Each port supports baud rates from 50 to 115,200 bps (standard) and up to 921.6 kbps with optional higher-frequency crystal.
- 16550A-Compatible UARTs:
Each port uses a 16550A-compatible UART with 16-byte FIFO buffers for efficient data handling and reduced CPU load.
- Comprehensive OS Support:
Compatible with DOS, Windows 95/98/ME/NT/2000/XP/2003/Vista/7, Linux, SCO OpenServer, and UNIX systems.
- Flexible Connector Options:
Includes DB62M-to-8×DB9M cable (R804) or optional DB62M-to-8×DB25M cable (R801).
- Scalable System Integration:
Supports up to two P5888U cards per system, providing up to 16 serial ports.
- Industrial Reliability:
Designed for continuous operation in industrial environments with wide temperature and humidity tolerance.
Four ports (A–D) support RS485 only; four ports (E–H) are independently selectable for RS232, RS422, or RS485 operation.
- Universal PCI Interface:
Compatible with both 5V and 3.3V PCI slots (33 MHz), ensuring broad motherboard compatibility.
- 5V Power-Only Design:
Operates solely from the 5V PCI rail, simplifying power requirements and improving stability.
- Auto-Data-Direction-Control for RS485:
Built-in automatic data direction control eliminates the need for manual RTS signal management in half-duplex RS485 communication.
- Plug & Play Resource Assignment:
IRQ and I/O address mapping are automatically assigned by the PCI BIOS, supporting shared IRQ configurations.
- High-Speed Serial Communication:
Each port supports baud rates from 50 to 115,200 bps (standard) and up to 921.6 kbps with optional higher-frequency crystal.
- 16550A-Compatible UARTs:
Each port uses a 16550A-compatible UART with 16-byte FIFO buffers for efficient data handling and reduced CPU load.
- Comprehensive OS Support:
Compatible with DOS, Windows 95/98/ME/NT/2000/XP/2003/Vista/7, Linux, SCO OpenServer, and UNIX systems.
- Flexible Connector Options:
Includes DB62M-to-8×DB9M cable (R804) or optional DB62M-to-8×DB25M cable (R801).
- Scalable System Integration:
Supports up to two P5888U cards per system, providing up to 16 serial ports.
- Industrial Reliability:
Designed for continuous operation in industrial environments with wide temperature and humidity tolerance.
Comprehensive Product Summary – RAYON Technology P5888U Universal PCI 8-Port Serial Communication Card
### 1. Product Overview
Product Name: UPCI 8-Port 4×RS232/422/485 + 4×RS485 5V-Only Card
Model: P5888U
Series: RAYON PCIPORT Universal PCI Serial Communication Cards
Article Number: P5888U
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
Website: [www.rayontech.com](http://www.rayontech.com) | [www.acceed.com/rayon](http://www.acceed.com/rayon)
Support Email: rayon@ms1.hinet.net | rayon@acceed.com
The RAYON P5888U is a high-performance, intelligent Universal PCI serial communication card designed for industrial, commercial, and embedded computing environments requiring multiple serial interfaces. It provides eight independent serial ports—four dedicated RS485 ports and four configurable RS232/RS422/RS485 ports—on a single 5V PCI card. The card is engineered for compatibility with a wide range of operating systems and supports automatic resource allocation through PCI Plug & Play.
### 2. Key Features
- Eight Independent Serial Ports:
Four ports (A–D) support RS485 only; four ports (E–H) are independently selectable for RS232, RS422, or RS485 operation.
- Universal PCI Interface:
Compatible with both 5V and 3.3V PCI slots (33 MHz), ensuring broad motherboard compatibility.
- 5V Power-Only Design:
Operates solely from the 5V PCI rail, simplifying power requirements and improving stability.
- Auto-Data-Direction-Control for RS485:
Built-in automatic data direction control eliminates the need for manual RTS signal management in half-duplex RS485 communication.
- Plug & Play Resource Assignment:
IRQ and I/O address mapping are automatically assigned by the PCI BIOS, supporting shared IRQ configurations.
- High-Speed Serial Communication:
Each port supports baud rates from 50 to 115,200 bps (standard) and up to 921.6 kbps with optional higher-frequency crystal.
- 16550A-Compatible UARTs:
Each port uses a 16550A-compatible UART with 16-byte FIFO buffers for efficient data handling and reduced CPU load.
- Comprehensive OS Support:
Compatible with DOS, Windows 95/98/ME/NT/2000/XP/2003/Vista/7, Linux, SCO OpenServer, and UNIX systems.
- Flexible Connector Options:
Includes DB62M-to-8×DB9M cable (R804) or optional DB62M-to-8×DB25M cable (R801).
- Scalable System Integration:
Supports up to two P5888U cards per system, providing up to 16 serial ports.
- Industrial Reliability:
Designed for continuous operation in industrial environments with wide temperature and humidity tolerance.
### 3. Technical Specifications
System Architecture:
- Intelligent PCI serial communication controller card
- External expansion cable with eight standard DB25 or DB9 connectors
Serial Controller:
- Type: 16550A-compatible UART
- Clock Frequency: 1.8432 MHz (standard), optional 14.7456 MHz for high-speed operation
- FIFO Buffer: 16 bytes transmit/receive per port
Interface Configuration:
- Total Ports: 8
- Ports A–D: RS485 only
- Ports E–H: RS232/RS422/RS485 selectable
- Baud Rate: 50–115,200 bps (standard), up to 921,600 bps (optional)
- Connector Type: DB25M (R801 cable) or DB9M (R804 cable)
- Signal Support: TXD, RXD, RTS, CTS, DTR, DSR, DCD, RI (varies by mode)
Bus Interface:
- PCI Local Bus Specification Rev. 2.1 compliant
- 33 MHz PCI clock
- 5V and 3.3V signaling support
- Plug & Play automatic configuration
I/O and IRQ Mapping:
- One 64-byte and one 8-byte I/O region assigned by PCI BIOS
- One IRQ assigned by PCI BIOS (IRQ shareable)
Physical Dimensions:
- Card Size: 6.0 × 4.2 inches (152 × 107 mm)
Environmental Conditions:
- Operating Temperature: 0°C to 55°C
- Storage Temperature: 0°C to 65°C
- Operating Humidity: 10%–95% RH (non-condensing)
- Storage Humidity: 5%–95% RH
Power Requirements:
- 5V PCI power only (no external supply required)
### 4. Functionality
The P5888U functions as an intelligent multi-port serial controller for PCI-based systems. It offloads serial communication tasks from the host CPU by using buffered UARTs, reducing interrupt overhead and improving system performance. Each port can be configured independently for RS232, RS422, or RS485 operation, allowing flexible integration with diverse serial devices such as PLCs, sensors, modems, and industrial controllers.
Typical Applications:
- Industrial automation and process control
- Building management systems (BMS)
- SCADA and data acquisition systems
- POS and kiosk terminals
- Embedded control systems
- Multi-drop RS485 networks
Compatibility:
- Fully compatible with standard serial communication protocols
- Supports both half-duplex (RS485) and full-duplex (RS422/RS232) modes
- Works with standard serial communication software and drivers
### 5. Components & Accessories
Included Components:
- One P5888U PCI interface card
- One 62-pin expansion cable (DB62M to 8×DB9M or DB25M)
- User manual and driver diskette
Optional Accessories:
- R801 Cable: DB62M to 8×DB25M male connectors
- R804 Cable: DB62M to 8×DB9M male connectors
- R802 Cable: DB62M to 8×DB25F connectors
- R803 Cable: DB62M-to-DB62M cable for connection to RS4232-8 isolation box
- RS4232-8 Box: External isolation module providing isolated RS232/RS422/RS485 interfaces
- TB485 Adapter: DB9F to 3-pin terminal block for RS485 wiring
Connector Pinouts:
Detailed pin assignments for DB62, DB25, and DB9 connectors are provided in the product manual (Appendix A).
### 6. Installation & Setup
System Requirements:
- PC/AT-compatible system with available 5V or 3.3V PCI slot
- Supported operating system (DOS, Windows, Linux, SCO, UNIX)
Installation Procedure:
1. Power off the system and remove the cover.
2. Insert the P5888U card into an available PCI slot.
3. Connect the 62-pin expansion cable to the card.
4. Attach the DB9 or DB25 connectors to external devices.
5. Power on the system.
6. Install the appropriate driver for your operating system.
Jumper Configuration (JP1):
- ON = First card in system
- OFF = Second card in system
Driver Installation:
- Windows 95/98/ME/NT/2000/XP/Vista/7: Plug & Play detection; specify driver path (A:\WIN2000 or equivalent).
- Linux: Install via source-based module; requires kernel headers in `/usr/src/linux`.
- SCO OpenServer: Install using `/etc/custom` or manual build procedure.
- DOS: Run `PCIPORT.EXE` from driver diskette.
Multi-Card Installation:
Supports up to two P5888U cards per system. Each card must have a unique jumper setting (JP1 ON/OFF). IRQ sharing is supported under Windows and Linux but not under SCO OpenServer.
### 7. Performance & Capabilities
- Baud Rate Range: 50–115,200 bps (standard), up to 921,600 bps (optional)
- Data Bits: 5, 6, 7, or 8
- Stop Bits: 1 or 2
- Parity: None, Even, Odd, Mark, Space
- Flow Control: Hardware (RTS/CTS) or Software (XON/XOFF)
- FIFO Buffer: 16 bytes transmit/receive per port
- IRQ Sharing: Supported (PCI BIOS-assigned)
- Maximum Cards per System: 2 (16 ports total)
- Bus Throughput: Optimized via buffered UARTs to minimize CPU interrupts
- Auto Direction Control: Built-in for RS485 half-duplex communication
- Isolation (optional): Achievable via RS4232-8 external isolation box
Limitations:
- RS485 mode supports half-duplex communication only.
- SCO OpenServer requires unique IRQs per card (no IRQ sharing).
- Maximum of two cards per system due to resource constraints.
### 8. Standards & Compliance
- PCI Local Bus Specification: Revision 2.1 compliant
- UART Compatibility: 16550A standard
- Electrical Interface Standards:
- RS232C (EIA/TIA-232)
- RS422 (EIA/TIA-422)
- RS485 (EIA/TIA-485)
- Operating System Drivers: Certified for Windows, Linux, and SCO environments
- Environmental Compliance: Designed for industrial operating ranges
- EMC/ESD Protection: Integrated surge and signal protection (with optional isolation box)
### 9. Additional Information
Warranty:
- One-year limited warranty covering defects in materials and workmanship.
- Excludes damage from misuse, electrical surges, or unauthorized modification.
Repair & RMA Procedure:
- Obtain RMA number from RAYON service representative before returning products.
- Provide model number, serial number, and reason for return.
- Warranty repairs are free of charge; out-of-warranty repairs incur a flat-rate service fee.
Technical Support:
- Taiwan: rayon@ms1.hinet.net
- Europe: rayon@acceed.com
- Documentation: Comprehensive installation and troubleshooting manual included.
Maintenance & Updates:
- Firmware and driver updates available via RAYON support channels.
- Regular driver updates for new OS versions (Windows 7, Linux kernel 2.4+).
Related Models in the 5V PCI 8-Port Series:
| Model | RS232 | RS422 | RS485 |
|--------|--------|--------|--------|
| P5188U | 8 | 8 | 0 |
| P5288U | 8 | 0 | 8 |
| P5388U | 0 | 8 | 8 |
| P5488U | 8 | 4 | 4 |
| P5588U | 8 | 0 | 0 |
| P5688U | 8 | 6 | 2 |
| P5788U | 8 | 7 | 1 |
| P5888U | 4 | 4 | 8 |
| P5988U | 4 | 8 | 4 |
Support for QNX Systems:
The P5888U can be used under QNX 6.0 using the built-in `devc-ser8250` driver. Configuration requires identifying the card’s I/O base and IRQ via the `pci` command and initializing ports with `devc-ser8250` parameters.
### Summary
The RAYON P5888U Universal PCI 8-Port Serial Communication Card is a robust, industrial-grade solution for expanding serial connectivity in PCI-based systems. Its combination of flexible interface configuration, automatic resource management, and broad OS compatibility makes it ideal for demanding multi-port serial applications. With support for both RS232 and differential RS422/RS485 signaling, the P5888U bridges legacy and modern serial communication environments, ensuring reliable data exchange across diverse industrial and commercial systems.
### 1. Product Overview
Product Name: UPCI 8-Port 4×RS232/422/485 + 4×RS485 5V-Only Card
Model: P5888U
Series: RAYON PCIPORT Universal PCI Serial Communication Cards
Article Number: P5888U
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
Website: [www.rayontech.com](http://www.rayontech.com) | [www.acceed.com/rayon](http://www.acceed.com/rayon)
Support Email: rayon@ms1.hinet.net | rayon@acceed.com
The RAYON P5888U is a high-performance, intelligent Universal PCI serial communication card designed for industrial, commercial, and embedded computing environments requiring multiple serial interfaces. It provides eight independent serial ports—four dedicated RS485 ports and four configurable RS232/RS422/RS485 ports—on a single 5V PCI card. The card is engineered for compatibility with a wide range of operating systems and supports automatic resource allocation through PCI Plug & Play.
### 2. Key Features
- Eight Independent Serial Ports:
Four ports (A–D) support RS485 only; four ports (E–H) are independently selectable for RS232, RS422, or RS485 operation.
- Universal PCI Interface:
Compatible with both 5V and 3.3V PCI slots (33 MHz), ensuring broad motherboard compatibility.
- 5V Power-Only Design:
Operates solely from the 5V PCI rail, simplifying power requirements and improving stability.
- Auto-Data-Direction-Control for RS485:
Built-in automatic data direction control eliminates the need for manual RTS signal management in half-duplex RS485 communication.
- Plug & Play Resource Assignment:
IRQ and I/O address mapping are automatically assigned by the PCI BIOS, supporting shared IRQ configurations.
- High-Speed Serial Communication:
Each port supports baud rates from 50 to 115,200 bps (standard) and up to 921.6 kbps with optional higher-frequency crystal.
- 16550A-Compatible UARTs:
Each port uses a 16550A-compatible UART with 16-byte FIFO buffers for efficient data handling and reduced CPU load.
- Comprehensive OS Support:
Compatible with DOS, Windows 95/98/ME/NT/2000/XP/2003/Vista/7, Linux, SCO OpenServer, and UNIX systems.
- Flexible Connector Options:
Includes DB62M-to-8×DB9M cable (R804) or optional DB62M-to-8×DB25M cable (R801).
- Scalable System Integration:
Supports up to two P5888U cards per system, providing up to 16 serial ports.
- Industrial Reliability:
Designed for continuous operation in industrial environments with wide temperature and humidity tolerance.
### 3. Technical Specifications
System Architecture:
- Intelligent PCI serial communication controller card
- External expansion cable with eight standard DB25 or DB9 connectors
Serial Controller:
- Type: 16550A-compatible UART
- Clock Frequency: 1.8432 MHz (standard), optional 14.7456 MHz for high-speed operation
- FIFO Buffer: 16 bytes transmit/receive per port
Interface Configuration:
- Total Ports: 8
- Ports A–D: RS485 only
- Ports E–H: RS232/RS422/RS485 selectable
- Baud Rate: 50–115,200 bps (standard), up to 921,600 bps (optional)
- Connector Type: DB25M (R801 cable) or DB9M (R804 cable)
- Signal Support: TXD, RXD, RTS, CTS, DTR, DSR, DCD, RI (varies by mode)
Bus Interface:
- PCI Local Bus Specification Rev. 2.1 compliant
- 33 MHz PCI clock
- 5V and 3.3V signaling support
- Plug & Play automatic configuration
I/O and IRQ Mapping:
- One 64-byte and one 8-byte I/O region assigned by PCI BIOS
- One IRQ assigned by PCI BIOS (IRQ shareable)
Physical Dimensions:
- Card Size: 6.0 × 4.2 inches (152 × 107 mm)
Environmental Conditions:
- Operating Temperature: 0°C to 55°C
- Storage Temperature: 0°C to 65°C
- Operating Humidity: 10%–95% RH (non-condensing)
- Storage Humidity: 5%–95% RH
Power Requirements:
- 5V PCI power only (no external supply required)
### 4. Functionality
The P5888U functions as an intelligent multi-port serial controller for PCI-based systems. It offloads serial communication tasks from the host CPU by using buffered UARTs, reducing interrupt overhead and improving system performance. Each port can be configured independently for RS232, RS422, or RS485 operation, allowing flexible integration with diverse serial devices such as PLCs, sensors, modems, and industrial controllers.
Typical Applications:
- Industrial automation and process control
- Building management systems (BMS)
- SCADA and data acquisition systems
- POS and kiosk terminals
- Embedded control systems
- Multi-drop RS485 networks
Compatibility:
- Fully compatible with standard serial communication protocols
- Supports both half-duplex (RS485) and full-duplex (RS422/RS232) modes
- Works with standard serial communication software and drivers
### 5. Components & Accessories
Included Components:
- One P5888U PCI interface card
- One 62-pin expansion cable (DB62M to 8×DB9M or DB25M)
- User manual and driver diskette
Optional Accessories:
- R801 Cable: DB62M to 8×DB25M male connectors
- R804 Cable: DB62M to 8×DB9M male connectors
- R802 Cable: DB62M to 8×DB25F connectors
- R803 Cable: DB62M-to-DB62M cable for connection to RS4232-8 isolation box
- RS4232-8 Box: External isolation module providing isolated RS232/RS422/RS485 interfaces
- TB485 Adapter: DB9F to 3-pin terminal block for RS485 wiring
Connector Pinouts:
Detailed pin assignments for DB62, DB25, and DB9 connectors are provided in the product manual (Appendix A).
### 6. Installation & Setup
System Requirements:
- PC/AT-compatible system with available 5V or 3.3V PCI slot
- Supported operating system (DOS, Windows, Linux, SCO, UNIX)
Installation Procedure:
1. Power off the system and remove the cover.
2. Insert the P5888U card into an available PCI slot.
3. Connect the 62-pin expansion cable to the card.
4. Attach the DB9 or DB25 connectors to external devices.
5. Power on the system.
6. Install the appropriate driver for your operating system.
Jumper Configuration (JP1):
- ON = First card in system
- OFF = Second card in system
Driver Installation:
- Windows 95/98/ME/NT/2000/XP/Vista/7: Plug & Play detection; specify driver path (A:\WIN2000 or equivalent).
- Linux: Install via source-based module; requires kernel headers in `/usr/src/linux`.
- SCO OpenServer: Install using `/etc/custom` or manual build procedure.
- DOS: Run `PCIPORT.EXE` from driver diskette.
Multi-Card Installation:
Supports up to two P5888U cards per system. Each card must have a unique jumper setting (JP1 ON/OFF). IRQ sharing is supported under Windows and Linux but not under SCO OpenServer.
### 7. Performance & Capabilities
- Baud Rate Range: 50–115,200 bps (standard), up to 921,600 bps (optional)
- Data Bits: 5, 6, 7, or 8
- Stop Bits: 1 or 2
- Parity: None, Even, Odd, Mark, Space
- Flow Control: Hardware (RTS/CTS) or Software (XON/XOFF)
- FIFO Buffer: 16 bytes transmit/receive per port
- IRQ Sharing: Supported (PCI BIOS-assigned)
- Maximum Cards per System: 2 (16 ports total)
- Bus Throughput: Optimized via buffered UARTs to minimize CPU interrupts
- Auto Direction Control: Built-in for RS485 half-duplex communication
- Isolation (optional): Achievable via RS4232-8 external isolation box
Limitations:
- RS485 mode supports half-duplex communication only.
- SCO OpenServer requires unique IRQs per card (no IRQ sharing).
- Maximum of two cards per system due to resource constraints.
### 8. Standards & Compliance
- PCI Local Bus Specification: Revision 2.1 compliant
- UART Compatibility: 16550A standard
- Electrical Interface Standards:
- RS232C (EIA/TIA-232)
- RS422 (EIA/TIA-422)
- RS485 (EIA/TIA-485)
- Operating System Drivers: Certified for Windows, Linux, and SCO environments
- Environmental Compliance: Designed for industrial operating ranges
- EMC/ESD Protection: Integrated surge and signal protection (with optional isolation box)
### 9. Additional Information
Warranty:
- One-year limited warranty covering defects in materials and workmanship.
- Excludes damage from misuse, electrical surges, or unauthorized modification.
Repair & RMA Procedure:
- Obtain RMA number from RAYON service representative before returning products.
- Provide model number, serial number, and reason for return.
- Warranty repairs are free of charge; out-of-warranty repairs incur a flat-rate service fee.
Technical Support:
- Taiwan: rayon@ms1.hinet.net
- Europe: rayon@acceed.com
- Documentation: Comprehensive installation and troubleshooting manual included.
Maintenance & Updates:
- Firmware and driver updates available via RAYON support channels.
- Regular driver updates for new OS versions (Windows 7, Linux kernel 2.4+).
Related Models in the 5V PCI 8-Port Series:
| Model | RS232 | RS422 | RS485 |
|--------|--------|--------|--------|
| P5188U | 8 | 8 | 0 |
| P5288U | 8 | 0 | 8 |
| P5388U | 0 | 8 | 8 |
| P5488U | 8 | 4 | 4 |
| P5588U | 8 | 0 | 0 |
| P5688U | 8 | 6 | 2 |
| P5788U | 8 | 7 | 1 |
| P5888U | 4 | 4 | 8 |
| P5988U | 4 | 8 | 4 |
Support for QNX Systems:
The P5888U can be used under QNX 6.0 using the built-in `devc-ser8250` driver. Configuration requires identifying the card’s I/O base and IRQ via the `pci` command and initializing ports with `devc-ser8250` parameters.
### Summary
The RAYON P5888U Universal PCI 8-Port Serial Communication Card is a robust, industrial-grade solution for expanding serial connectivity in PCI-based systems. Its combination of flexible interface configuration, automatic resource management, and broad OS compatibility makes it ideal for demanding multi-port serial applications. With support for both RS232 and differential RS422/RS485 signaling, the P5888U bridges legacy and modern serial communication environments, ensuring reliable data exchange across diverse industrial and commercial systems.
-
P5888U_Catalog.pdf
PDF Catalog
-
PCI-Port-015.pdf
Manual
-
QNX use of Rayon Cards.pdf
Manual
