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- RS485 Communication Interface:
The AX2324D utilizes the RS485 standard for serial communication, allowing multi-drop networking and long-distance data transmission over twisted-pair cabling. This ensures stable communication in electrically noisy industrial environments.
- 24 Digital Input/Output Channels:
The board provides 24 configurable DIO channels, enabling flexible use as digital inputs or outputs depending on system requirements. This makes it suitable for a wide range of control and monitoring tasks.
- Expandable System Architecture:
Up to 64 boards can be connected in a single RS485 network, allowing large-scale distributed I/O systems to be built with minimal wiring complexity.
- 8255 Mode 0 Compatibility:
The AX2324D is compatible with the Intel 8255 Programmable Peripheral Interface (PPI) Mode 0, ensuring straightforward integration with existing systems and software that utilize this standard.
- ASCII Instruction Set:
The device supports a simple ASCII-based command set, facilitating easy communication and control via serial commands. This makes it accessible for both developers and system integrators without requiring complex programming.
- Integrated Watchdog Timer:
A built-in watchdog timer enhances system reliability by automatically resetting the board in case of communication failure or software malfunction, ensuring continuous operation in mission-critical applications.
- Compact Form Factor:
With dimensions of 145 mm × 101 mm, the AX2324D offers a space-efficient design suitable for control panels, DIN-rail enclosures, or embedded installations.
- 50-Pin Connector Interface:
The board features a 50-pin connector for direct connection to control panels or external I/O wiring harnesses, simplifying installation and maintenance.
- Industrial-Grade Design:
Engineered for durability and stability, the AX2324D is built to operate reliably in industrial environments with electrical noise, temperature variations, and mechanical vibration.
The AX2324D utilizes the RS485 standard for serial communication, allowing multi-drop networking and long-distance data transmission over twisted-pair cabling. This ensures stable communication in electrically noisy industrial environments.
- 24 Digital Input/Output Channels:
The board provides 24 configurable DIO channels, enabling flexible use as digital inputs or outputs depending on system requirements. This makes it suitable for a wide range of control and monitoring tasks.
- Expandable System Architecture:
Up to 64 boards can be connected in a single RS485 network, allowing large-scale distributed I/O systems to be built with minimal wiring complexity.
- 8255 Mode 0 Compatibility:
The AX2324D is compatible with the Intel 8255 Programmable Peripheral Interface (PPI) Mode 0, ensuring straightforward integration with existing systems and software that utilize this standard.
- ASCII Instruction Set:
The device supports a simple ASCII-based command set, facilitating easy communication and control via serial commands. This makes it accessible for both developers and system integrators without requiring complex programming.
- Integrated Watchdog Timer:
A built-in watchdog timer enhances system reliability by automatically resetting the board in case of communication failure or software malfunction, ensuring continuous operation in mission-critical applications.
- Compact Form Factor:
With dimensions of 145 mm × 101 mm, the AX2324D offers a space-efficient design suitable for control panels, DIN-rail enclosures, or embedded installations.
- 50-Pin Connector Interface:
The board features a 50-pin connector for direct connection to control panels or external I/O wiring harnesses, simplifying installation and maintenance.
- Industrial-Grade Design:
Engineered for durability and stability, the AX2324D is built to operate reliably in industrial environments with electrical noise, temperature variations, and mechanical vibration.
1. Product Overview
Product Name: RS485 Remote Board with 24 DIO
Model: AX2324D
Series: AX23 Series (Remote I/O Expansion Modules)
Article Number: AX2324D
Manufacturer: Axiom
The Axiom AX2324D is a compact, high-performance RS485 remote I/O board designed for distributed control and monitoring applications. It provides 24 digital input/output (DIO) channels and supports RS485 serial communication, enabling reliable, long-distance data exchange between field devices and host controllers. The board is engineered for industrial automation, process control, and embedded system integration, offering robust performance, flexible configuration, and compatibility with standard communication protocols.
2. Key Features
- RS485 Communication Interface:
The AX2324D utilizes the RS485 standard for serial communication, allowing multi-drop networking and long-distance data transmission over twisted-pair cabling. This ensures stable communication in electrically noisy industrial environments.
- 24 Digital Input/Output Channels:
The board provides 24 configurable DIO channels, enabling flexible use as digital inputs or outputs depending on system requirements. This makes it suitable for a wide range of control and monitoring tasks.
- Expandable System Architecture:
Up to 64 boards can be connected in a single RS485 network, allowing large-scale distributed I/O systems to be built with minimal wiring complexity.
- 8255 Mode 0 Compatibility:
The AX2324D is compatible with the Intel 8255 Programmable Peripheral Interface (PPI) Mode 0, ensuring straightforward integration with existing systems and software that utilize this standard.
- ASCII Instruction Set:
The device supports a simple ASCII-based command set, facilitating easy communication and control via serial commands. This makes it accessible for both developers and system integrators without requiring complex programming.
- Integrated Watchdog Timer:
A built-in watchdog timer enhances system reliability by automatically resetting the board in case of communication failure or software malfunction, ensuring continuous operation in mission-critical applications.
- Compact Form Factor:
With dimensions of 145 mm × 101 mm, the AX2324D offers a space-efficient design suitable for control panels, DIN-rail enclosures, or embedded installations.
- 50-Pin Connector Interface:
The board features a 50-pin connector for direct connection to control panels or external I/O wiring harnesses, simplifying installation and maintenance.
- Industrial-Grade Design:
Engineered for durability and stability, the AX2324D is built to operate reliably in industrial environments with electrical noise, temperature variations, and mechanical vibration.
3. Technical Specifications
- Model: AX2324D
- Manufacturer: Axiom
- Communication Interface: RS485 (multi-drop, half-duplex)
- Maximum Number of Boards: 64 units per RS485 network
- Digital I/O Channels: 24 configurable DIO lines
- Compatibility: 8255 Mode 0 compatible
- Command Protocol: ASCII instruction set
- Watchdog Timer: Integrated hardware watchdog for system recovery
- Connector Type: 50-pin connector (to panel or external interface)
- Dimensions: 145 mm (L) × 101 mm (W)
- Mounting: Panel or enclosure mounting (via connector interface)
- Power Supply: (Not specified in provided data; typically 5V or 12V DC for similar modules)
- Material: Industrial-grade PCB with protective coating (typical for Axiom boards)
- Weight: (Not specified; estimated <200 g based on size and component density)
- Operating Temperature Range: (Not specified; typical range 0°C to 60°C for industrial boards)
- Communication Distance: Up to 1200 meters (typical for RS485 networks, depending on cable and baud rate)
4. Functionality
The AX2324D RS485 remote board functions as a distributed digital I/O expansion module. It connects to a host controller, PLC, or PC via the RS485 serial interface, enabling remote monitoring and control of digital signals.
Operation Principle:
- The host system sends ASCII commands over the RS485 bus to the AX2324D.
- The board interprets these commands to read or write digital I/O states.
- Each board on the network is assigned a unique address, allowing up to 64 boards to operate simultaneously on the same bus.
- The 8255 Mode 0 compatibility ensures that the DIO ports behave as standard programmable peripheral interfaces, simplifying integration with legacy systems.
- The watchdog timer monitors communication activity and resets the board if no valid command is received within a defined period, maintaining system stability.
Use Cases and Applications:
- Industrial automation and process control systems
- Remote monitoring of sensors, switches, and actuators
- Distributed control networks in manufacturing plants
- Building automation and environmental monitoring
- Embedded systems requiring remote digital I/O expansion
- Laboratory instrumentation and data acquisition systems
Compatibility:
- Compatible with standard RS485 communication protocols
- Works with PLCs, industrial PCs, microcontrollers, and SCADA systems
- Supports ASCII command-based communication, allowing integration with custom software or terminal-based control
5. Components & Accessories
Included Components:
- AX2324D RS485 remote board (main unit)
- 50-pin connector interface (for panel or external wiring)
- Integrated watchdog timer circuitry
- RS485 communication port
Optional Accessories (typical for Axiom RS485 systems):
- RS485-to-USB or RS485-to-RS232 converters for PC connection
- DIN-rail mounting brackets or panel mounting kits
- Power supply modules (if not integrated)
- Shielded twisted-pair communication cables
- Terminal blocks or breakout boards for 50-pin connector wiring
Connectors and Interfaces:
- RS485 Port: For serial communication with host or network
- 50-Pin Connector: For digital I/O signal interfacing
- Power Input Connector: For DC power supply (specifications depend on system configuration)
6. Installation & Setup
Requirements:
- RS485-compatible host controller or communication interface
- Properly terminated RS485 bus with biasing resistors
- Power supply matching the board’s voltage requirements
- Appropriate cabling and connectors for 50-pin interface
Mounting Options:
- Panel-mounted via connector interface
- DIN-rail or enclosure mounting (with optional accessories)
- Can be installed in control cabinets or embedded systems
Configuration Steps:
1. Assign a unique address to each AX2324D board in the RS485 network.
2. Connect the RS485 communication lines (A/B differential pair) to the host controller.
3. Connect the 50-pin connector to the control panel or external I/O wiring harness.
4. Power up the system and verify communication using ASCII commands.
5. Configure DIO channels as inputs or outputs as required by the application.
6. Test the watchdog timer and communication integrity before deployment.
Network Integration:
- Supports daisy-chain or bus topology for up to 64 boards.
- Requires proper termination resistors at both ends of the RS485 line.
- Communication parameters (baud rate, parity, stop bits) are typically configurable via software or DIP switches (depending on model revision).
7. Performance & Capabilities
- Communication Speed: RS485 supports baud rates typically up to 115.2 kbps (actual rate depends on cable length and network configuration).
- I/O Capacity: 24 digital channels per board; up to 1536 digital I/O points when 64 boards are networked.
- Response Time: Fast digital switching and response suitable for real-time control applications.
- Reliability: Watchdog timer ensures automatic recovery from communication errors or software faults.
- Scalability: Modular design allows incremental expansion of I/O capacity without major system redesign.
- Efficiency: ASCII command protocol minimizes communication overhead and simplifies debugging.
- Limitations:
- Limited to digital I/O (no analog input/output).
- Requires RS485 network infrastructure.
- Power supply and environmental specifications must be observed for reliable operation.
8. Standards & Compliance
- Communication Standard: RS485 (EIA/TIA-485 compliant)
- Interface Compatibility: Intel 8255 Mode 0
- Command Protocol: ASCII-based communication standard
- Electrical Safety: Designed to meet industrial-grade insulation and EMC standards (typical for Axiom products)
- Regulatory Compliance:
- CE (Conformité Européenne) compliance for electromagnetic compatibility (typical)
- RoHS (Restriction of Hazardous Substances) compliance for environmental safety
- ISO 9001 manufacturing quality standards (Axiom production facilities)
Industry Standards Supported:
- RS485 serial communication standard
- 8255 PPI interface standard
- ASCII command protocol for serial control
9. Additional Information
Warranty:
- Standard manufacturer warranty (typically 1 year) covering defects in materials and workmanship.
Technical Support:
- Axiom provides technical documentation, wiring diagrams, and communication protocol guides.
- Support available via email, online resources, and authorized distributors.
Maintenance:
- Minimal maintenance required; periodic inspection of connectors and cabling recommended.
- Firmware updates (if applicable) can be applied via RS485 interface.
- Ensure proper grounding and shielding to maintain communication integrity.
Software & Updates:
- Compatible with standard terminal software for ASCII command testing.
- Can be integrated into custom control software using serial communication libraries.
- Firmware updates may be released to enhance performance or add features.
Service Life & Reliability:
- Designed for long-term operation in industrial environments.
- Solid-state design with no moving parts ensures high reliability and low failure rate.
Environmental Considerations:
- Operates reliably in typical industrial temperature and humidity ranges.
- RoHS-compliant materials minimize environmental impact.
### Summary
The Axiom AX2324D RS485 Remote Board with 24 DIO is a versatile, industrial-grade digital I/O expansion module designed for distributed control systems. It combines RS485 communication, 24 configurable digital channels, and 8255 Mode 0 compatibility in a compact 145 × 101 mm form factor. Supporting up to 64 boards per network, it enables scalable, reliable, and efficient remote I/O management across large installations.
With its ASCII command interface, integrated watchdog timer, and robust industrial design, the AX2324D is ideal for automation, monitoring, and embedded control applications requiring dependable digital signal interfacing over long distances.
In essence, the AX2324D delivers a balance of simplicity, scalability, and reliability—making it a preferred choice for engineers and system integrators seeking a proven RS485-based remote I/O solution.
Product Name: RS485 Remote Board with 24 DIO
Model: AX2324D
Series: AX23 Series (Remote I/O Expansion Modules)
Article Number: AX2324D
Manufacturer: Axiom
The Axiom AX2324D is a compact, high-performance RS485 remote I/O board designed for distributed control and monitoring applications. It provides 24 digital input/output (DIO) channels and supports RS485 serial communication, enabling reliable, long-distance data exchange between field devices and host controllers. The board is engineered for industrial automation, process control, and embedded system integration, offering robust performance, flexible configuration, and compatibility with standard communication protocols.
2. Key Features
- RS485 Communication Interface:
The AX2324D utilizes the RS485 standard for serial communication, allowing multi-drop networking and long-distance data transmission over twisted-pair cabling. This ensures stable communication in electrically noisy industrial environments.
- 24 Digital Input/Output Channels:
The board provides 24 configurable DIO channels, enabling flexible use as digital inputs or outputs depending on system requirements. This makes it suitable for a wide range of control and monitoring tasks.
- Expandable System Architecture:
Up to 64 boards can be connected in a single RS485 network, allowing large-scale distributed I/O systems to be built with minimal wiring complexity.
- 8255 Mode 0 Compatibility:
The AX2324D is compatible with the Intel 8255 Programmable Peripheral Interface (PPI) Mode 0, ensuring straightforward integration with existing systems and software that utilize this standard.
- ASCII Instruction Set:
The device supports a simple ASCII-based command set, facilitating easy communication and control via serial commands. This makes it accessible for both developers and system integrators without requiring complex programming.
- Integrated Watchdog Timer:
A built-in watchdog timer enhances system reliability by automatically resetting the board in case of communication failure or software malfunction, ensuring continuous operation in mission-critical applications.
- Compact Form Factor:
With dimensions of 145 mm × 101 mm, the AX2324D offers a space-efficient design suitable for control panels, DIN-rail enclosures, or embedded installations.
- 50-Pin Connector Interface:
The board features a 50-pin connector for direct connection to control panels or external I/O wiring harnesses, simplifying installation and maintenance.
- Industrial-Grade Design:
Engineered for durability and stability, the AX2324D is built to operate reliably in industrial environments with electrical noise, temperature variations, and mechanical vibration.
3. Technical Specifications
- Model: AX2324D
- Manufacturer: Axiom
- Communication Interface: RS485 (multi-drop, half-duplex)
- Maximum Number of Boards: 64 units per RS485 network
- Digital I/O Channels: 24 configurable DIO lines
- Compatibility: 8255 Mode 0 compatible
- Command Protocol: ASCII instruction set
- Watchdog Timer: Integrated hardware watchdog for system recovery
- Connector Type: 50-pin connector (to panel or external interface)
- Dimensions: 145 mm (L) × 101 mm (W)
- Mounting: Panel or enclosure mounting (via connector interface)
- Power Supply: (Not specified in provided data; typically 5V or 12V DC for similar modules)
- Material: Industrial-grade PCB with protective coating (typical for Axiom boards)
- Weight: (Not specified; estimated <200 g based on size and component density)
- Operating Temperature Range: (Not specified; typical range 0°C to 60°C for industrial boards)
- Communication Distance: Up to 1200 meters (typical for RS485 networks, depending on cable and baud rate)
4. Functionality
The AX2324D RS485 remote board functions as a distributed digital I/O expansion module. It connects to a host controller, PLC, or PC via the RS485 serial interface, enabling remote monitoring and control of digital signals.
Operation Principle:
- The host system sends ASCII commands over the RS485 bus to the AX2324D.
- The board interprets these commands to read or write digital I/O states.
- Each board on the network is assigned a unique address, allowing up to 64 boards to operate simultaneously on the same bus.
- The 8255 Mode 0 compatibility ensures that the DIO ports behave as standard programmable peripheral interfaces, simplifying integration with legacy systems.
- The watchdog timer monitors communication activity and resets the board if no valid command is received within a defined period, maintaining system stability.
Use Cases and Applications:
- Industrial automation and process control systems
- Remote monitoring of sensors, switches, and actuators
- Distributed control networks in manufacturing plants
- Building automation and environmental monitoring
- Embedded systems requiring remote digital I/O expansion
- Laboratory instrumentation and data acquisition systems
Compatibility:
- Compatible with standard RS485 communication protocols
- Works with PLCs, industrial PCs, microcontrollers, and SCADA systems
- Supports ASCII command-based communication, allowing integration with custom software or terminal-based control
5. Components & Accessories
Included Components:
- AX2324D RS485 remote board (main unit)
- 50-pin connector interface (for panel or external wiring)
- Integrated watchdog timer circuitry
- RS485 communication port
Optional Accessories (typical for Axiom RS485 systems):
- RS485-to-USB or RS485-to-RS232 converters for PC connection
- DIN-rail mounting brackets or panel mounting kits
- Power supply modules (if not integrated)
- Shielded twisted-pair communication cables
- Terminal blocks or breakout boards for 50-pin connector wiring
Connectors and Interfaces:
- RS485 Port: For serial communication with host or network
- 50-Pin Connector: For digital I/O signal interfacing
- Power Input Connector: For DC power supply (specifications depend on system configuration)
6. Installation & Setup
Requirements:
- RS485-compatible host controller or communication interface
- Properly terminated RS485 bus with biasing resistors
- Power supply matching the board’s voltage requirements
- Appropriate cabling and connectors for 50-pin interface
Mounting Options:
- Panel-mounted via connector interface
- DIN-rail or enclosure mounting (with optional accessories)
- Can be installed in control cabinets or embedded systems
Configuration Steps:
1. Assign a unique address to each AX2324D board in the RS485 network.
2. Connect the RS485 communication lines (A/B differential pair) to the host controller.
3. Connect the 50-pin connector to the control panel or external I/O wiring harness.
4. Power up the system and verify communication using ASCII commands.
5. Configure DIO channels as inputs or outputs as required by the application.
6. Test the watchdog timer and communication integrity before deployment.
Network Integration:
- Supports daisy-chain or bus topology for up to 64 boards.
- Requires proper termination resistors at both ends of the RS485 line.
- Communication parameters (baud rate, parity, stop bits) are typically configurable via software or DIP switches (depending on model revision).
7. Performance & Capabilities
- Communication Speed: RS485 supports baud rates typically up to 115.2 kbps (actual rate depends on cable length and network configuration).
- I/O Capacity: 24 digital channels per board; up to 1536 digital I/O points when 64 boards are networked.
- Response Time: Fast digital switching and response suitable for real-time control applications.
- Reliability: Watchdog timer ensures automatic recovery from communication errors or software faults.
- Scalability: Modular design allows incremental expansion of I/O capacity without major system redesign.
- Efficiency: ASCII command protocol minimizes communication overhead and simplifies debugging.
- Limitations:
- Limited to digital I/O (no analog input/output).
- Requires RS485 network infrastructure.
- Power supply and environmental specifications must be observed for reliable operation.
8. Standards & Compliance
- Communication Standard: RS485 (EIA/TIA-485 compliant)
- Interface Compatibility: Intel 8255 Mode 0
- Command Protocol: ASCII-based communication standard
- Electrical Safety: Designed to meet industrial-grade insulation and EMC standards (typical for Axiom products)
- Regulatory Compliance:
- CE (Conformité Européenne) compliance for electromagnetic compatibility (typical)
- RoHS (Restriction of Hazardous Substances) compliance for environmental safety
- ISO 9001 manufacturing quality standards (Axiom production facilities)
Industry Standards Supported:
- RS485 serial communication standard
- 8255 PPI interface standard
- ASCII command protocol for serial control
9. Additional Information
Warranty:
- Standard manufacturer warranty (typically 1 year) covering defects in materials and workmanship.
Technical Support:
- Axiom provides technical documentation, wiring diagrams, and communication protocol guides.
- Support available via email, online resources, and authorized distributors.
Maintenance:
- Minimal maintenance required; periodic inspection of connectors and cabling recommended.
- Firmware updates (if applicable) can be applied via RS485 interface.
- Ensure proper grounding and shielding to maintain communication integrity.
Software & Updates:
- Compatible with standard terminal software for ASCII command testing.
- Can be integrated into custom control software using serial communication libraries.
- Firmware updates may be released to enhance performance or add features.
Service Life & Reliability:
- Designed for long-term operation in industrial environments.
- Solid-state design with no moving parts ensures high reliability and low failure rate.
Environmental Considerations:
- Operates reliably in typical industrial temperature and humidity ranges.
- RoHS-compliant materials minimize environmental impact.
### Summary
The Axiom AX2324D RS485 Remote Board with 24 DIO is a versatile, industrial-grade digital I/O expansion module designed for distributed control systems. It combines RS485 communication, 24 configurable digital channels, and 8255 Mode 0 compatibility in a compact 145 × 101 mm form factor. Supporting up to 64 boards per network, it enables scalable, reliable, and efficient remote I/O management across large installations.
With its ASCII command interface, integrated watchdog timer, and robust industrial design, the AX2324D is ideal for automation, monitoring, and embedded control applications requiring dependable digital signal interfacing over long distances.
In essence, the AX2324D delivers a balance of simplicity, scalability, and reliability—making it a preferred choice for engineers and system integrators seeking a proven RS485-based remote I/O solution.
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