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- One-to-Three Port Sharing: Allows one master device to communicate with up to three slave devices simultaneously.
- Interface Flexibility: Supports RS232 and RS422/485 serial communication standards.
- Isolated Master Port: The master port (RS422/485) is galvanically isolated to prevent ground loops and protect connected equipment from electrical surges.
- Auto Data Direction Control: For RS485 operation, the device automatically manages data direction, simplifying configuration and ensuring reliable half-duplex communication.
- Compact and Robust Design: Housed in a durable enclosure measuring 90 mm × 150 mm × 27 mm, suitable for industrial and embedded environments.
- LED Indicators: Four independent LED indicators (PWR, ATRX, BTRX, CTRX, DTRX) provide real-time status of power and data transmission activity.
- Low Power Consumption: Operates at 5 VDC with a typical current draw of 400 mA.
- Wide Environmental Tolerance: Designed for operation in ambient temperatures from 0°C to 55°C and humidity levels up to 95% RH.
- Ease of Integration: Standard DB9 male connectors for all ports ensure compatibility with common serial cables and devices.
- Part of a Modular System: The S432i integrates seamlessly with other S400 Series models (e.g., S232, S234io, S434io) for scalable serial communication networks.
- Interface Flexibility: Supports RS232 and RS422/485 serial communication standards.
- Isolated Master Port: The master port (RS422/485) is galvanically isolated to prevent ground loops and protect connected equipment from electrical surges.
- Auto Data Direction Control: For RS485 operation, the device automatically manages data direction, simplifying configuration and ensuring reliable half-duplex communication.
- Compact and Robust Design: Housed in a durable enclosure measuring 90 mm × 150 mm × 27 mm, suitable for industrial and embedded environments.
- LED Indicators: Four independent LED indicators (PWR, ATRX, BTRX, CTRX, DTRX) provide real-time status of power and data transmission activity.
- Low Power Consumption: Operates at 5 VDC with a typical current draw of 400 mA.
- Wide Environmental Tolerance: Designed for operation in ambient temperatures from 0°C to 55°C and humidity levels up to 95% RH.
- Ease of Integration: Standard DB9 male connectors for all ports ensure compatibility with common serial cables and devices.
- Part of a Modular System: The S432i integrates seamlessly with other S400 Series models (e.g., S232, S234io, S434io) for scalable serial communication networks.
Comprehensive Product Summary – Rayon Technology S432i Port Sharer
### 1. Product Overview
Product Name: Port Sharer – Isolated RS485/422 Master to 3×RS232 Slaves
Model: S432i
Series: S400 Series (Serial Port Sharer Family)
Article Number: S432i
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) / [www.computex.com.tw/rayon](http://www.computex.com.tw/rayon)
Product Description:
The Rayon S432i is a serial port sharing device designed to connect one isolated RS485/422 master port to three RS232 slave ports. It enables simultaneous communication between a single master and multiple slave devices, providing electrical isolation on the master side for enhanced signal integrity and protection. The unit is part of Rayon’s S400 Series, a family of flexible and powerful serial port sharers supporting various combinations of RS232 and RS422/485 interfaces.
### 2. Key Features
- One-to-Three Port Sharing: Allows one master device to communicate with up to three slave devices simultaneously.
- Interface Flexibility: Supports RS232 and RS422/485 serial communication standards.
- Isolated Master Port: The master port (RS422/485) is galvanically isolated to prevent ground loops and protect connected equipment from electrical surges.
- Auto Data Direction Control: For RS485 operation, the device automatically manages data direction, simplifying configuration and ensuring reliable half-duplex communication.
- Compact and Robust Design: Housed in a durable enclosure measuring 90 mm × 150 mm × 27 mm, suitable for industrial and embedded environments.
- LED Indicators: Four independent LED indicators (PWR, ATRX, BTRX, CTRX, DTRX) provide real-time status of power and data transmission activity.
- Low Power Consumption: Operates at 5 VDC with a typical current draw of 400 mA.
- Wide Environmental Tolerance: Designed for operation in ambient temperatures from 0°C to 55°C and humidity levels up to 95% RH.
- Ease of Integration: Standard DB9 male connectors for all ports ensure compatibility with common serial cables and devices.
- Part of a Modular System: The S432i integrates seamlessly with other S400 Series models (e.g., S232, S234io, S434io) for scalable serial communication networks.
### 3. Technical Specifications
Physical Characteristics:
- Dimensions: 90 mm (W) × 150 mm (L) × 27 mm (H)
- Weight: Approx. 250–300 g (typical for S400 Series units)
- Enclosure Material: Industrial-grade metal housing (Rayon standard S400 box)
- Color/Finish: Standard Rayon metallic finish
Electrical Characteristics:
- Power Supply: 5 VDC ±5%
- Power Consumption: 400 mA @ 5 VDC
- Power Adapter: UP110/UP220 (US/EU type)
- Input: 100–240 VAC, 50/60 Hz
- Output: 5 VDC, 1000 mA
Serial Interface:
- Connector Type: DB9 male (×4)
- Port Configuration:
- Port A: Isolated RS422/485 master port
- Ports B, C, D: RS232 slave ports
- Number of Ports: 4 total (1 master + 3 slaves)
- Signal Pins (RS422/485): TX+, TX−, RX+, RX−, isolated GND
- Signal Pins (RS232): Standard RS232 pinout (TXD, RXD, GND, etc.)
- RS422/485 Mode Selection: Configurable via DIP switch
- Auto Data Direction Control: Supported in RS485 mode (TX+/RX+ shorted as DATA+, TX−/RX− shorted as DATA−)
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 (non-condensing)
### 4. Functionality
Operational Concept:
The S432i functions as a serial port sharer, enabling one isolated RS422/485 master device (such as a PLC, PC, or data acquisition controller) to communicate with up to three RS232 slave devices simultaneously. Data received from the master port is broadcast to all slave ports (B, C, D). Conversely, data received from any slave port is transmitted back to the master port only, preventing cross-talk between slave devices.
Use Cases and Applications:
- Industrial Automation: Connecting PLCs or controllers with multiple RS232-based sensors or actuators.
- Data Acquisition Systems: Integrating RS485/422 master controllers with multiple RS232 instruments (e.g., flow meters, watt meters, gas recorders).
- Building Management Systems: Centralized monitoring of multiple RS232 devices from a single RS485/422 backbone.
- Utility Metering: Ideal for environments where a master system polls multiple meters or sensors and receives responses individually.
- Embedded Systems: Suitable for OEM integration where multiple serial devices must share a single communication channel.
Compatibility:
- Compatible with standard RS232 and RS422/485 communication protocols.
- Works with PCs, PLCs, industrial controllers, and data loggers.
- Supports integration with Rayon’s P1064 multi-port serial cards for large-scale systems.
### 5. Components & Accessories
Included Items:
- S432i Port Sharer main unit
- UP110 or UP220 power adapter (region-specific)
- User manual or quick start guide
- Mounting hardware (optional, depending on package)
Optional Accessories:
- RS232 and RS485/422 serial cables (DB9 male/female)
- DIN-rail mounting kit (for industrial installations)
- Additional Rayon S400 Series units for system expansion
- P1064 multi-port serial card for PC integration
Connectors:
- Four DB9 male connectors (Ports A–D)
- Power input jack (5 VDC)
### 6. Installation & Setup
Requirements:
- Power source: 5 VDC regulated supply (included adapter recommended)
- Compatible master device with RS422/485 interface
- Up to three RS232 slave devices
Mounting Options:
- Desktop or panel mounting
- Optional DIN-rail mounting for industrial environments
Configuration Steps:
1. Set Interface Mode: Use the DIP switch to select RS422 or RS485 mode for the master port.
2. Connect Master Port: Attach the RS422/485 master device to Port A (DB9 male).
3. Connect Slave Ports: Connect up to three RS232 devices to Ports B, C, and D.
4. Power On: Connect the 5 VDC adapter and verify the PWR LED is illuminated.
5. Check Communication: Observe ATRX, BTRX, CTRX, and DTRX LEDs for data activity.
LED Indicators:
- PWR: Power ON indicator
- ATRX: Port A transmit/receive activity
- BTRX: Port B transmit/receive activity
- CTRX: Port C transmit/receive activity
- DTRX: Port D transmit/receive activity
### 7. Performance & Capabilities
Communication Performance:
- Data Direction: Automatic handling of master-to-slave broadcast and slave-to-master response.
- Transmission Control: Auto Data Direction Control in RS485 mode ensures efficient half-duplex communication.
- Isolation: Electrical isolation on the master port enhances noise immunity and protects against voltage surges.
- Latency: Minimal propagation delay between master and slave ports, suitable for real-time control applications.
- Capacity: Supports simultaneous communication with three RS232 devices.
Efficiency and Limitations:
- Designed for short- to medium-range serial communication (typical RS232/RS485 distances).
- Not intended for high-speed or long-distance fiber-optic communication without additional converters.
- Isolation applies only to the master port; slave ports are non-isolated in the S432i model (for isolated slaves, use S432io).
Scalability:
- Multiple S400 Series units can be cascaded or combined with Rayon’s multi-port serial cards to support large-scale systems (up to thousands of devices).
### 8. Standards & Compliance
Electrical and Safety Standards:
- Complies with RS232 and RS422/485 serial communication standards (EIA/TIA-232, EIA/TIA-422, EIA/TIA-485).
- Designed for compliance with CE and FCC Class A industrial emission standards (typical for Rayon products).
- Isolation conforms to industrial-grade galvanic isolation practices for RS422/485 interfaces.
Environmental Compliance:
- RoHS-compliant materials and lead-free manufacturing process.
- Designed for industrial operating environments with wide temperature and humidity ranges.
Quality Assurance:
- Manufactured under Rayon Technology’s ISO-certified quality management system.
- Each unit undergoes functional testing for signal integrity and isolation performance.
### 9. Additional Information
Warranty:
- Standard manufacturer warranty (typically 1 year) covering defects in materials and workmanship.
Technical Support:
- Direct support available via email (rayon@ms1.hinet.net).
- Online resources and documentation available at [www.rayontech.com](http://www.rayontech.com).
Maintenance:
- No periodic maintenance required.
- Ensure proper ventilation and avoid exposure to excessive moisture or dust.
- Clean exterior with a dry, non-abrasive cloth.
Firmware/Updates:
- The S432i operates as a hardware-based serial signal router; no firmware updates are typically required.
Related Models in the S400 Series:
- S232: RS232 master to 3×RS232 slaves
- S232o: RS232 master to 3×isolated RS232 slaves
- S232io: Isolated RS232 master to 3×isolated RS232 slaves
- S432io: Isolated RS422/485 master to 3×isolated RS232 slaves
- S434io: Isolated RS422/485 master to 3×isolated RS422/485 slaves
- S234o: RS232 master to 3×isolated RS422/485 slaves
- S234io: Isolated RS232 master to 3×isolated RS422/485 slaves
Example Application (from S234io reference):
In a data collection system, a PC or PLC can act as the master device connected to the S432i’s isolated RS485/422 port. The three RS232 slave ports can interface with meters, sensors, or controllers. The master broadcasts polling commands to all slaves, and only the addressed slave responds, simplifying network troubleshooting and ensuring efficient data acquisition.
Scalable System Architecture:
By combining multiple S400 Series units, users can expand from small installations (supporting a few devices) to large-scale networks managing thousands of endpoints. For example, using Rayon’s P1064 64-port serial card, each port can connect to an S432i or S234io, enabling centralized control of up to 16,000 devices.
### Summary
The Rayon S432i Port Sharer is a compact, industrial-grade communication interface converter designed to bridge one isolated RS422/485 master port with three RS232 slave ports. It provides reliable, isolated, and flexible serial communication for automation, data acquisition, and control systems. With its robust design, auto-direction control, and LED diagnostics, the S432i simplifies multi-device serial networking while maintaining signal integrity and electrical safety. As part of Rayon’s modular S400 Series, it offers scalable connectivity solutions for both small and large industrial communication infrastructures.
### 1. Product Overview
Product Name: Port Sharer – Isolated RS485/422 Master to 3×RS232 Slaves
Model: S432i
Series: S400 Series (Serial Port Sharer Family)
Article Number: S432i
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) / [www.computex.com.tw/rayon](http://www.computex.com.tw/rayon)
Product Description:
The Rayon S432i is a serial port sharing device designed to connect one isolated RS485/422 master port to three RS232 slave ports. It enables simultaneous communication between a single master and multiple slave devices, providing electrical isolation on the master side for enhanced signal integrity and protection. The unit is part of Rayon’s S400 Series, a family of flexible and powerful serial port sharers supporting various combinations of RS232 and RS422/485 interfaces.
### 2. Key Features
- One-to-Three Port Sharing: Allows one master device to communicate with up to three slave devices simultaneously.
- Interface Flexibility: Supports RS232 and RS422/485 serial communication standards.
- Isolated Master Port: The master port (RS422/485) is galvanically isolated to prevent ground loops and protect connected equipment from electrical surges.
- Auto Data Direction Control: For RS485 operation, the device automatically manages data direction, simplifying configuration and ensuring reliable half-duplex communication.
- Compact and Robust Design: Housed in a durable enclosure measuring 90 mm × 150 mm × 27 mm, suitable for industrial and embedded environments.
- LED Indicators: Four independent LED indicators (PWR, ATRX, BTRX, CTRX, DTRX) provide real-time status of power and data transmission activity.
- Low Power Consumption: Operates at 5 VDC with a typical current draw of 400 mA.
- Wide Environmental Tolerance: Designed for operation in ambient temperatures from 0°C to 55°C and humidity levels up to 95% RH.
- Ease of Integration: Standard DB9 male connectors for all ports ensure compatibility with common serial cables and devices.
- Part of a Modular System: The S432i integrates seamlessly with other S400 Series models (e.g., S232, S234io, S434io) for scalable serial communication networks.
### 3. Technical Specifications
Physical Characteristics:
- Dimensions: 90 mm (W) × 150 mm (L) × 27 mm (H)
- Weight: Approx. 250–300 g (typical for S400 Series units)
- Enclosure Material: Industrial-grade metal housing (Rayon standard S400 box)
- Color/Finish: Standard Rayon metallic finish
Electrical Characteristics:
- Power Supply: 5 VDC ±5%
- Power Consumption: 400 mA @ 5 VDC
- Power Adapter: UP110/UP220 (US/EU type)
- Input: 100–240 VAC, 50/60 Hz
- Output: 5 VDC, 1000 mA
Serial Interface:
- Connector Type: DB9 male (×4)
- Port Configuration:
- Port A: Isolated RS422/485 master port
- Ports B, C, D: RS232 slave ports
- Number of Ports: 4 total (1 master + 3 slaves)
- Signal Pins (RS422/485): TX+, TX−, RX+, RX−, isolated GND
- Signal Pins (RS232): Standard RS232 pinout (TXD, RXD, GND, etc.)
- RS422/485 Mode Selection: Configurable via DIP switch
- Auto Data Direction Control: Supported in RS485 mode (TX+/RX+ shorted as DATA+, TX−/RX− shorted as DATA−)
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 (non-condensing)
### 4. Functionality
Operational Concept:
The S432i functions as a serial port sharer, enabling one isolated RS422/485 master device (such as a PLC, PC, or data acquisition controller) to communicate with up to three RS232 slave devices simultaneously. Data received from the master port is broadcast to all slave ports (B, C, D). Conversely, data received from any slave port is transmitted back to the master port only, preventing cross-talk between slave devices.
Use Cases and Applications:
- Industrial Automation: Connecting PLCs or controllers with multiple RS232-based sensors or actuators.
- Data Acquisition Systems: Integrating RS485/422 master controllers with multiple RS232 instruments (e.g., flow meters, watt meters, gas recorders).
- Building Management Systems: Centralized monitoring of multiple RS232 devices from a single RS485/422 backbone.
- Utility Metering: Ideal for environments where a master system polls multiple meters or sensors and receives responses individually.
- Embedded Systems: Suitable for OEM integration where multiple serial devices must share a single communication channel.
Compatibility:
- Compatible with standard RS232 and RS422/485 communication protocols.
- Works with PCs, PLCs, industrial controllers, and data loggers.
- Supports integration with Rayon’s P1064 multi-port serial cards for large-scale systems.
### 5. Components & Accessories
Included Items:
- S432i Port Sharer main unit
- UP110 or UP220 power adapter (region-specific)
- User manual or quick start guide
- Mounting hardware (optional, depending on package)
Optional Accessories:
- RS232 and RS485/422 serial cables (DB9 male/female)
- DIN-rail mounting kit (for industrial installations)
- Additional Rayon S400 Series units for system expansion
- P1064 multi-port serial card for PC integration
Connectors:
- Four DB9 male connectors (Ports A–D)
- Power input jack (5 VDC)
### 6. Installation & Setup
Requirements:
- Power source: 5 VDC regulated supply (included adapter recommended)
- Compatible master device with RS422/485 interface
- Up to three RS232 slave devices
Mounting Options:
- Desktop or panel mounting
- Optional DIN-rail mounting for industrial environments
Configuration Steps:
1. Set Interface Mode: Use the DIP switch to select RS422 or RS485 mode for the master port.
2. Connect Master Port: Attach the RS422/485 master device to Port A (DB9 male).
3. Connect Slave Ports: Connect up to three RS232 devices to Ports B, C, and D.
4. Power On: Connect the 5 VDC adapter and verify the PWR LED is illuminated.
5. Check Communication: Observe ATRX, BTRX, CTRX, and DTRX LEDs for data activity.
LED Indicators:
- PWR: Power ON indicator
- ATRX: Port A transmit/receive activity
- BTRX: Port B transmit/receive activity
- CTRX: Port C transmit/receive activity
- DTRX: Port D transmit/receive activity
### 7. Performance & Capabilities
Communication Performance:
- Data Direction: Automatic handling of master-to-slave broadcast and slave-to-master response.
- Transmission Control: Auto Data Direction Control in RS485 mode ensures efficient half-duplex communication.
- Isolation: Electrical isolation on the master port enhances noise immunity and protects against voltage surges.
- Latency: Minimal propagation delay between master and slave ports, suitable for real-time control applications.
- Capacity: Supports simultaneous communication with three RS232 devices.
Efficiency and Limitations:
- Designed for short- to medium-range serial communication (typical RS232/RS485 distances).
- Not intended for high-speed or long-distance fiber-optic communication without additional converters.
- Isolation applies only to the master port; slave ports are non-isolated in the S432i model (for isolated slaves, use S432io).
Scalability:
- Multiple S400 Series units can be cascaded or combined with Rayon’s multi-port serial cards to support large-scale systems (up to thousands of devices).
### 8. Standards & Compliance
Electrical and Safety Standards:
- Complies with RS232 and RS422/485 serial communication standards (EIA/TIA-232, EIA/TIA-422, EIA/TIA-485).
- Designed for compliance with CE and FCC Class A industrial emission standards (typical for Rayon products).
- Isolation conforms to industrial-grade galvanic isolation practices for RS422/485 interfaces.
Environmental Compliance:
- RoHS-compliant materials and lead-free manufacturing process.
- Designed for industrial operating environments with wide temperature and humidity ranges.
Quality Assurance:
- Manufactured under Rayon Technology’s ISO-certified quality management system.
- Each unit undergoes functional testing for signal integrity and isolation performance.
### 9. Additional Information
Warranty:
- Standard manufacturer warranty (typically 1 year) covering defects in materials and workmanship.
Technical Support:
- Direct support available via email (rayon@ms1.hinet.net).
- Online resources and documentation available at [www.rayontech.com](http://www.rayontech.com).
Maintenance:
- No periodic maintenance required.
- Ensure proper ventilation and avoid exposure to excessive moisture or dust.
- Clean exterior with a dry, non-abrasive cloth.
Firmware/Updates:
- The S432i operates as a hardware-based serial signal router; no firmware updates are typically required.
Related Models in the S400 Series:
- S232: RS232 master to 3×RS232 slaves
- S232o: RS232 master to 3×isolated RS232 slaves
- S232io: Isolated RS232 master to 3×isolated RS232 slaves
- S432io: Isolated RS422/485 master to 3×isolated RS232 slaves
- S434io: Isolated RS422/485 master to 3×isolated RS422/485 slaves
- S234o: RS232 master to 3×isolated RS422/485 slaves
- S234io: Isolated RS232 master to 3×isolated RS422/485 slaves
Example Application (from S234io reference):
In a data collection system, a PC or PLC can act as the master device connected to the S432i’s isolated RS485/422 port. The three RS232 slave ports can interface with meters, sensors, or controllers. The master broadcasts polling commands to all slaves, and only the addressed slave responds, simplifying network troubleshooting and ensuring efficient data acquisition.
Scalable System Architecture:
By combining multiple S400 Series units, users can expand from small installations (supporting a few devices) to large-scale networks managing thousands of endpoints. For example, using Rayon’s P1064 64-port serial card, each port can connect to an S432i or S234io, enabling centralized control of up to 16,000 devices.
### Summary
The Rayon S432i Port Sharer is a compact, industrial-grade communication interface converter designed to bridge one isolated RS422/485 master port with three RS232 slave ports. It provides reliable, isolated, and flexible serial communication for automation, data acquisition, and control systems. With its robust design, auto-direction control, and LED diagnostics, the S432i simplifies multi-device serial networking while maintaining signal integrity and electrical safety. As part of Rayon’s modular S400 Series, it offers scalable connectivity solutions for both small and large industrial communication infrastructures.
-
S400_Catalog.pdf
PDF Catalog
-
S234IO Application Note.pdf
Manual
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