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F642N
8-port RS422 connector box up to 230,4kBd
88,00 EUR
including VAT 104.72 EUR
- Eight RS422 Serial Ports: Each box provides eight independent RS422-compatible ports for differential serial communication.
- Built-in FIFO UART Controller: Incorporates eight 16C554 UART chips, each with FIFO buffering for efficient data handling and reduced CPU overhead.
- High-Speed Data Transmission: Supports baud rates up to 230,400 bps (230.4 kBd), ensuring reliable high-speed communication.
- Expandable Architecture: Up to eight F642N boxes can be daisy-chained to a single host card, supporting a maximum of 64 serial ports.
- Optional IRQ Line: Provides an optional interrupt request line from the box to the host card for optimized interrupt-driven communication.
- DB37 Daisy-Chain Connectivity: Equipped with DB37 female (input) and DB37 male (output) connectors for linking multiple boxes in sequence.
- DB25 Port Connectors: Each serial port uses a DB25 male connector, ensuring compatibility with standard RS422 cabling and devices.
- FIFO Buffering: Reduces data loss and improves throughput by buffering incoming and outgoing data streams.
- Compatibility: Designed to interface with Rayon P640NU and IOP3927F intelligent multiport cards.
- Flexible System Integration: Supports mixed interface configurations (RS232 and RS422) within the same host system.
- Industrial-Grade Design: Built for continuous operation in controlled environments with wide temperature and humidity tolerance.
- Compact Form Factor: Space-efficient design suitable for rack or desktop integration.
- Built-in FIFO UART Controller: Incorporates eight 16C554 UART chips, each with FIFO buffering for efficient data handling and reduced CPU overhead.
- High-Speed Data Transmission: Supports baud rates up to 230,400 bps (230.4 kBd), ensuring reliable high-speed communication.
- Expandable Architecture: Up to eight F642N boxes can be daisy-chained to a single host card, supporting a maximum of 64 serial ports.
- Optional IRQ Line: Provides an optional interrupt request line from the box to the host card for optimized interrupt-driven communication.
- DB37 Daisy-Chain Connectivity: Equipped with DB37 female (input) and DB37 male (output) connectors for linking multiple boxes in sequence.
- DB25 Port Connectors: Each serial port uses a DB25 male connector, ensuring compatibility with standard RS422 cabling and devices.
- FIFO Buffering: Reduces data loss and improves throughput by buffering incoming and outgoing data streams.
- Compatibility: Designed to interface with Rayon P640NU and IOP3927F intelligent multiport cards.
- Flexible System Integration: Supports mixed interface configurations (RS232 and RS422) within the same host system.
- Industrial-Grade Design: Built for continuous operation in controlled environments with wide temperature and humidity tolerance.
- Compact Form Factor: Space-efficient design suitable for rack or desktop integration.
Comprehensive Product Summary – Rayon F642N 8-Port RS422 Connector Box
### 1. Product Overview
Product Name: F642N
Model: F642N
Series: F64x Series Connector Boxes (F641/F642)
Article Number: F642N
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)
Product Description:
The Rayon F642N is an 8-port RS422 connector box designed for high-performance serial communication applications. It integrates eight FIFO-type UART controllers (16C554) and supports data transmission rates up to 230.4 kBd. The F642N is part of Rayon’s modular multiport communication system, compatible with intelligent multiport cards such as the P640NU and IOP3927F, enabling scalable serial connectivity for industrial, commercial, and embedded computing environments.
Each F642N unit provides eight independent RS422 serial ports and can be daisy-chained with up to eight boxes, supporting a total of 64 serial ports per host card. The device is engineered for robust, high-speed, and noise-resistant differential signaling, making it ideal for long-distance and high-integrity data communication.
### 2. Key Features
- Eight RS422 Serial Ports: Each box provides eight independent RS422-compatible ports for differential serial communication.
- Built-in FIFO UART Controller: Incorporates eight 16C554 UART chips, each with FIFO buffering for efficient data handling and reduced CPU overhead.
- High-Speed Data Transmission: Supports baud rates up to 230,400 bps (230.4 kBd), ensuring reliable high-speed communication.
- Expandable Architecture: Up to eight F642N boxes can be daisy-chained to a single host card, supporting a maximum of 64 serial ports.
- Optional IRQ Line: Provides an optional interrupt request line from the box to the host card for optimized interrupt-driven communication.
- DB37 Daisy-Chain Connectivity: Equipped with DB37 female (input) and DB37 male (output) connectors for linking multiple boxes in sequence.
- DB25 Port Connectors: Each serial port uses a DB25 male connector, ensuring compatibility with standard RS422 cabling and devices.
- FIFO Buffering: Reduces data loss and improves throughput by buffering incoming and outgoing data streams.
- Compatibility: Designed to interface with Rayon P640NU and IOP3927F intelligent multiport cards.
- Flexible System Integration: Supports mixed interface configurations (RS232 and RS422) within the same host system.
- Industrial-Grade Design: Built for continuous operation in controlled environments with wide temperature and humidity tolerance.
- Compact Form Factor: Space-efficient design suitable for rack or desktop integration.
### 3. Technical Specifications
Electrical & Interface Characteristics:
- Interface Standard: RS422 (differential signaling)
- Controller Type: FIFO-type UART, 16C554
- Number of Ports: 8 per box
- Connector Type: DB25 male (for each port)
- Daisy-Chain Connectors: DB37 female (input from card) and DB37 male (output to next box)
- Baud Rate Support: 110, 135, 300, 600, 1200, 1800, 2400, 4800, 9600, 19200, 38400, 57600, 76800, 115200, 230400 bps
- Signal Lines (per port):
- Pin 1: Frame Ground
- Pin 7: Signal Ground
- Pin 9: RXD+ (Receive Data Positive)
- Pin 10: RXD– (Receive Data Negative)
- Pin 11: TXD+ (Transmit Data Positive)
- Pin 12: TXD– (Transmit Data Negative)
Physical Characteristics:
- Dimensions: 231 mm × 89 mm × 38 mm (approx. 9.1 × 3.5 × 1.5 inches)
- Weight: Approx. 0.8–1.0 kg (typical, depending on configuration)
- Material: Industrial-grade metal enclosure for EMI shielding and durability
Environmental Conditions:
- Operating Temperature: 5°C to 40°C
- Storage Temperature: 0°C to 65°C
- Operating Humidity: 10% to 90% RH (non-condensing)
- Storage Humidity: 5% to 90% RH (non-condensing)
### 4. Functionality
Operational Overview:
The F642N functions as an external RS422 serial expansion module. It connects to a Rayon intelligent multiport card (such as the P640NU or IOP3927F) via a 37-pin D-type cable. The host card manages data flow between the system CPU and the external serial ports, offloading communication tasks from the main processor.
Each F642N box contains eight independent UART channels, each capable of full-duplex RS422 communication. The FIFO buffering in each UART ensures smooth data transmission even under high-load conditions.
Use Cases and Applications:
- Industrial automation and control systems
- Data acquisition and instrumentation
- Multi-terminal communication servers
- POS and kiosk systems requiring multiple serial interfaces
- Embedded systems with high serial I/O demands
- Long-distance serial communication environments (RS422 supports up to 1200 meters)
Compatibility:
- Host Cards: P640NU, IOP3927F (Rayon)
- Operating Systems: Compatible with Rayon’s driver packages for DOS, Windows NT/2000/XP, Linux, and SCO UNIX
- Cabling: Uses A640 or equivalent 37-pin cable for connection to host card
### 5. Components & Accessories
Included Components:
- F642N 8-Port RS422 Connector Box
- DB37 interconnect cable (optional, depending on configuration)
- Mounting brackets (for multi-box installations)
- User documentation and driver support media
Optional Accessories:
- A640 Cable: 37-pin D-type cable for connecting the box to P640NU or IOP3927F cards
- Mounting Brackets: For securing multiple boxes in daisy-chain configurations
- Additional F642N Units: For system expansion up to 64 ports
- Power and Signal Cables: RS422-compliant shielded cables for external devices
Connectors:
- DB37 Female (Input): Connects to host card
- DB37 Male (Output): Connects to next F642N box in chain
- DB25 Male (Ports): Eight connectors for RS422 devices
### 6. Installation & Setup
System Requirements:
- Compatible host card (P640NU or IOP3927F)
- Available PCI slot for host card installation
- Appropriate driver software for target operating system
Installation Steps:
1. Install the host card (P640NU or IOP3927F) into the system’s PCI slot.
2. Connect the A640 cable from the host card’s DB37 connector to the F642N’s DB37 female input.
3. For multi-box configurations, connect the DB37 male output of the first box to the DB37 female input of the next box.
4. Secure boxes using the provided brackets if multiple units are mounted together.
5. Power on the system and install the appropriate Rayon driver package.
6. Verify LED indicators on each box to confirm successful initialization.
Configuration:
- Each box is automatically detected by the host card firmware and driver.
- Port numbering follows the daisy-chain order (Box 1 = Ports A–H, Box 2 = Ports I–P, etc.).
- IRQ and memory mapping are managed by the host card; optional IRQ line can be enabled for interrupt-driven operation.
### 7. Performance & Capabilities
Transmission Speed:
- Up to 230.4 kBd per port, supporting both low and high baud rates.
Capacity:
- 8 ports per box, expandable to 64 ports per host card (8 boxes).
Efficiency:
- FIFO buffering minimizes CPU load and prevents data overrun.
- Differential RS422 signaling ensures noise immunity and long-distance reliability.
Limitations:
- Requires compatible Rayon host card (cannot operate standalone).
- Operating temperature limited to 5–40°C (indoor environments).
- RS422 interface only (no RS485 or RS232 compatibility without conversion).
Reliability:
- Industrial-grade components ensure stable operation under continuous load.
- Daisy-chain design maintains signal integrity across multiple boxes.
### 8. Standards & Compliance
Interface Standards:
- RS422 (EIA/TIA-422) differential serial communication standard
Electrical Compliance:
- Meets standard RS422 voltage and current specifications
- Designed for EMI/RFI resistance through shielded metal enclosure
Regulatory Compliance:
- Manufactured under ISO-compliant quality control (Rayon internal standards)
- CE and FCC compliance (typical for Rayon communication hardware)
Industry Standards:
- Compatible with standard UART communication protocols
- Supports standard baud rate configurations recognized by operating systems
### 9. Additional Information
Warranty:
- One-year limited warranty covering defects in materials and workmanship
- Excludes damage from misuse, unauthorized servicing, or electrical faults
Support & Maintenance:
- Technical support available via email (rayon@ms1.hinet.net)
- Firmware and driver updates provided through Rayon’s website
- RMA (Return Material Authorization) procedure available for defective units
Repair Policy:
- Warranty repairs performed at no cost if product found defective
- Out-of-warranty repairs available at flat-rate service charge
- Customers must obtain RMA number before returning products
Maintenance Recommendations:
- Ensure adequate ventilation and stable power supply
- Use shielded cables for optimal signal integrity
- Periodically inspect connectors and cables for wear
Software & Driver Support:
- Drivers available for multiple operating systems:
- Windows NT/2000/XP (Plug & Play installation)
- Linux (source-based driver installation)
- SCO UNIX (kernel-linked driver)
- DOS/Windows 95/98/Me (for P640N compatibility)
- Diagnostic utilities (“etty” and “om”) provided for port testing and monitoring
Expansion Example Configurations:
- Single Box: 8 RS422 ports
- Two Boxes: 16 RS422 ports (via one P640NU card)
- Four Boxes: 32 RS422 ports (via one IOP3927F card)
- Eight Boxes: 64 RS422 ports maximum per system
Physical Mounting Options:
- Standalone desktop use
- Rack or panel mounting using optional brackets
- Daisy-chain assembly with mechanical interlocks for stability
### Summary
The Rayon F642N 8-Port RS422 Connector Box is a robust, high-performance serial communication expansion module engineered for industrial and multi-user computing environments. With its integrated FIFO UART controllers, high-speed RS422 interface, and modular daisy-chain design, the F642N provides scalable, reliable, and efficient serial connectivity.
When paired with Rayon’s intelligent multiport cards (P640NU or IOP3927F), the F642N enables up to 64 high-speed RS422 ports per system, making it an ideal solution for data-intensive applications such as automation, instrumentation, and communication servers.
Its combination of industrial-grade construction, flexible configuration, and comprehensive driver support ensures long-term reliability and compatibility across diverse operating systems and hardware platforms.
### 1. Product Overview
Product Name: F642N
Model: F642N
Series: F64x Series Connector Boxes (F641/F642)
Article Number: F642N
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)
Product Description:
The Rayon F642N is an 8-port RS422 connector box designed for high-performance serial communication applications. It integrates eight FIFO-type UART controllers (16C554) and supports data transmission rates up to 230.4 kBd. The F642N is part of Rayon’s modular multiport communication system, compatible with intelligent multiport cards such as the P640NU and IOP3927F, enabling scalable serial connectivity for industrial, commercial, and embedded computing environments.
Each F642N unit provides eight independent RS422 serial ports and can be daisy-chained with up to eight boxes, supporting a total of 64 serial ports per host card. The device is engineered for robust, high-speed, and noise-resistant differential signaling, making it ideal for long-distance and high-integrity data communication.
### 2. Key Features
- Eight RS422 Serial Ports: Each box provides eight independent RS422-compatible ports for differential serial communication.
- Built-in FIFO UART Controller: Incorporates eight 16C554 UART chips, each with FIFO buffering for efficient data handling and reduced CPU overhead.
- High-Speed Data Transmission: Supports baud rates up to 230,400 bps (230.4 kBd), ensuring reliable high-speed communication.
- Expandable Architecture: Up to eight F642N boxes can be daisy-chained to a single host card, supporting a maximum of 64 serial ports.
- Optional IRQ Line: Provides an optional interrupt request line from the box to the host card for optimized interrupt-driven communication.
- DB37 Daisy-Chain Connectivity: Equipped with DB37 female (input) and DB37 male (output) connectors for linking multiple boxes in sequence.
- DB25 Port Connectors: Each serial port uses a DB25 male connector, ensuring compatibility with standard RS422 cabling and devices.
- FIFO Buffering: Reduces data loss and improves throughput by buffering incoming and outgoing data streams.
- Compatibility: Designed to interface with Rayon P640NU and IOP3927F intelligent multiport cards.
- Flexible System Integration: Supports mixed interface configurations (RS232 and RS422) within the same host system.
- Industrial-Grade Design: Built for continuous operation in controlled environments with wide temperature and humidity tolerance.
- Compact Form Factor: Space-efficient design suitable for rack or desktop integration.
### 3. Technical Specifications
Electrical & Interface Characteristics:
- Interface Standard: RS422 (differential signaling)
- Controller Type: FIFO-type UART, 16C554
- Number of Ports: 8 per box
- Connector Type: DB25 male (for each port)
- Daisy-Chain Connectors: DB37 female (input from card) and DB37 male (output to next box)
- Baud Rate Support: 110, 135, 300, 600, 1200, 1800, 2400, 4800, 9600, 19200, 38400, 57600, 76800, 115200, 230400 bps
- Signal Lines (per port):
- Pin 1: Frame Ground
- Pin 7: Signal Ground
- Pin 9: RXD+ (Receive Data Positive)
- Pin 10: RXD– (Receive Data Negative)
- Pin 11: TXD+ (Transmit Data Positive)
- Pin 12: TXD– (Transmit Data Negative)
Physical Characteristics:
- Dimensions: 231 mm × 89 mm × 38 mm (approx. 9.1 × 3.5 × 1.5 inches)
- Weight: Approx. 0.8–1.0 kg (typical, depending on configuration)
- Material: Industrial-grade metal enclosure for EMI shielding and durability
Environmental Conditions:
- Operating Temperature: 5°C to 40°C
- Storage Temperature: 0°C to 65°C
- Operating Humidity: 10% to 90% RH (non-condensing)
- Storage Humidity: 5% to 90% RH (non-condensing)
### 4. Functionality
Operational Overview:
The F642N functions as an external RS422 serial expansion module. It connects to a Rayon intelligent multiport card (such as the P640NU or IOP3927F) via a 37-pin D-type cable. The host card manages data flow between the system CPU and the external serial ports, offloading communication tasks from the main processor.
Each F642N box contains eight independent UART channels, each capable of full-duplex RS422 communication. The FIFO buffering in each UART ensures smooth data transmission even under high-load conditions.
Use Cases and Applications:
- Industrial automation and control systems
- Data acquisition and instrumentation
- Multi-terminal communication servers
- POS and kiosk systems requiring multiple serial interfaces
- Embedded systems with high serial I/O demands
- Long-distance serial communication environments (RS422 supports up to 1200 meters)
Compatibility:
- Host Cards: P640NU, IOP3927F (Rayon)
- Operating Systems: Compatible with Rayon’s driver packages for DOS, Windows NT/2000/XP, Linux, and SCO UNIX
- Cabling: Uses A640 or equivalent 37-pin cable for connection to host card
### 5. Components & Accessories
Included Components:
- F642N 8-Port RS422 Connector Box
- DB37 interconnect cable (optional, depending on configuration)
- Mounting brackets (for multi-box installations)
- User documentation and driver support media
Optional Accessories:
- A640 Cable: 37-pin D-type cable for connecting the box to P640NU or IOP3927F cards
- Mounting Brackets: For securing multiple boxes in daisy-chain configurations
- Additional F642N Units: For system expansion up to 64 ports
- Power and Signal Cables: RS422-compliant shielded cables for external devices
Connectors:
- DB37 Female (Input): Connects to host card
- DB37 Male (Output): Connects to next F642N box in chain
- DB25 Male (Ports): Eight connectors for RS422 devices
### 6. Installation & Setup
System Requirements:
- Compatible host card (P640NU or IOP3927F)
- Available PCI slot for host card installation
- Appropriate driver software for target operating system
Installation Steps:
1. Install the host card (P640NU or IOP3927F) into the system’s PCI slot.
2. Connect the A640 cable from the host card’s DB37 connector to the F642N’s DB37 female input.
3. For multi-box configurations, connect the DB37 male output of the first box to the DB37 female input of the next box.
4. Secure boxes using the provided brackets if multiple units are mounted together.
5. Power on the system and install the appropriate Rayon driver package.
6. Verify LED indicators on each box to confirm successful initialization.
Configuration:
- Each box is automatically detected by the host card firmware and driver.
- Port numbering follows the daisy-chain order (Box 1 = Ports A–H, Box 2 = Ports I–P, etc.).
- IRQ and memory mapping are managed by the host card; optional IRQ line can be enabled for interrupt-driven operation.
### 7. Performance & Capabilities
Transmission Speed:
- Up to 230.4 kBd per port, supporting both low and high baud rates.
Capacity:
- 8 ports per box, expandable to 64 ports per host card (8 boxes).
Efficiency:
- FIFO buffering minimizes CPU load and prevents data overrun.
- Differential RS422 signaling ensures noise immunity and long-distance reliability.
Limitations:
- Requires compatible Rayon host card (cannot operate standalone).
- Operating temperature limited to 5–40°C (indoor environments).
- RS422 interface only (no RS485 or RS232 compatibility without conversion).
Reliability:
- Industrial-grade components ensure stable operation under continuous load.
- Daisy-chain design maintains signal integrity across multiple boxes.
### 8. Standards & Compliance
Interface Standards:
- RS422 (EIA/TIA-422) differential serial communication standard
Electrical Compliance:
- Meets standard RS422 voltage and current specifications
- Designed for EMI/RFI resistance through shielded metal enclosure
Regulatory Compliance:
- Manufactured under ISO-compliant quality control (Rayon internal standards)
- CE and FCC compliance (typical for Rayon communication hardware)
Industry Standards:
- Compatible with standard UART communication protocols
- Supports standard baud rate configurations recognized by operating systems
### 9. Additional Information
Warranty:
- One-year limited warranty covering defects in materials and workmanship
- Excludes damage from misuse, unauthorized servicing, or electrical faults
Support & Maintenance:
- Technical support available via email (rayon@ms1.hinet.net)
- Firmware and driver updates provided through Rayon’s website
- RMA (Return Material Authorization) procedure available for defective units
Repair Policy:
- Warranty repairs performed at no cost if product found defective
- Out-of-warranty repairs available at flat-rate service charge
- Customers must obtain RMA number before returning products
Maintenance Recommendations:
- Ensure adequate ventilation and stable power supply
- Use shielded cables for optimal signal integrity
- Periodically inspect connectors and cables for wear
Software & Driver Support:
- Drivers available for multiple operating systems:
- Windows NT/2000/XP (Plug & Play installation)
- Linux (source-based driver installation)
- SCO UNIX (kernel-linked driver)
- DOS/Windows 95/98/Me (for P640N compatibility)
- Diagnostic utilities (“etty” and “om”) provided for port testing and monitoring
Expansion Example Configurations:
- Single Box: 8 RS422 ports
- Two Boxes: 16 RS422 ports (via one P640NU card)
- Four Boxes: 32 RS422 ports (via one IOP3927F card)
- Eight Boxes: 64 RS422 ports maximum per system
Physical Mounting Options:
- Standalone desktop use
- Rack or panel mounting using optional brackets
- Daisy-chain assembly with mechanical interlocks for stability
### Summary
The Rayon F642N 8-Port RS422 Connector Box is a robust, high-performance serial communication expansion module engineered for industrial and multi-user computing environments. With its integrated FIFO UART controllers, high-speed RS422 interface, and modular daisy-chain design, the F642N provides scalable, reliable, and efficient serial connectivity.
When paired with Rayon’s intelligent multiport cards (P640NU or IOP3927F), the F642N enables up to 64 high-speed RS422 ports per system, making it an ideal solution for data-intensive applications such as automation, instrumentation, and communication servers.
Its combination of industrial-grade construction, flexible configuration, and comprehensive driver support ensures long-term reliability and compatibility across diverse operating systems and hardware platforms.
-
F641N_F642N_Catalog_en.pdf
PDF Catalog
-
IOP3927-004.pdf
Manual
-
Rayon Multiport Solution.pdf
Manual
