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- 48-Bit Digital I/O: Provides 48 individually programmable digital input/output lines for flexible signal interfacing.
- TTL Logic Compatibility: Supports standard Transistor-Transistor Logic (TTL) voltage levels, ensuring compatibility with a wide range of digital devices and control systems.
- Opto-22 Compatibility: Designed to interface seamlessly with Opto-22 digital I/O racks and modules, allowing easy integration into existing industrial control infrastructures.
- 8255 Mode 0 Emulation: Emulates the Intel 8255 PPI in Mode 0, providing a familiar programming model and compatibility with legacy software and hardware systems.
- PC/104 Bus Interface: Fully compliant with the PC/104 standard, supporting stackable embedded system configurations without the need for a backplane.
- Interrupt Support: Configurable interrupt request (IRQ) lines including IRQ5, IRQ9, IRQ10, IRQ11, IRQ12, and IRQ15 for event-driven I/O operations.
- Compact Form Factor: Measures 95 mm x 90 mm, optimized for embedded and space-constrained applications.
- Industrial Reliability: Designed for robust operation in industrial environments, with durable construction and stable electrical performance.
- Flexible Configuration: Each I/O port can be configured as input or output under software control, enabling dynamic reconfiguration for different tasks.
- High-Speed Digital Operation: Supports fast digital signal switching suitable for real-time control and monitoring applications.
- TTL Logic Compatibility: Supports standard Transistor-Transistor Logic (TTL) voltage levels, ensuring compatibility with a wide range of digital devices and control systems.
- Opto-22 Compatibility: Designed to interface seamlessly with Opto-22 digital I/O racks and modules, allowing easy integration into existing industrial control infrastructures.
- 8255 Mode 0 Emulation: Emulates the Intel 8255 PPI in Mode 0, providing a familiar programming model and compatibility with legacy software and hardware systems.
- PC/104 Bus Interface: Fully compliant with the PC/104 standard, supporting stackable embedded system configurations without the need for a backplane.
- Interrupt Support: Configurable interrupt request (IRQ) lines including IRQ5, IRQ9, IRQ10, IRQ11, IRQ12, and IRQ15 for event-driven I/O operations.
- Compact Form Factor: Measures 95 mm x 90 mm, optimized for embedded and space-constrained applications.
- Industrial Reliability: Designed for robust operation in industrial environments, with durable construction and stable electrical performance.
- Flexible Configuration: Each I/O port can be configured as input or output under software control, enabling dynamic reconfiguration for different tasks.
- High-Speed Digital Operation: Supports fast digital signal switching suitable for real-time control and monitoring applications.
1. Product Overview
Product Name: 48-bit Digital I/O TTL PC/104 Module
Model: AX10420
Series: AX10 Series (Industrial PC/104 I/O Modules)
Article Number: AX10420
Manufacturer: [Manufacturer not specified in source; typically produced by an industrial embedded systems vendor specializing in PC/104 modules]
The AX10420 is a compact, high-performance digital input/output (I/O) module designed for embedded and industrial control applications. It provides 48 channels of TTL-level digital I/O in a PC/104 form factor, offering full compatibility with Opto-22 digital I/O standards and emulation of the Intel 8255 Programmable Peripheral Interface (PPI) operating in Mode 0. This module is engineered for integration into PC/104-based embedded systems, enabling reliable digital signal interfacing, control, and monitoring in automation, instrumentation, and data acquisition environments.
2. Key Features
- 48-Bit Digital I/O: Provides 48 individually programmable digital input/output lines for flexible signal interfacing.
- TTL Logic Compatibility: Supports standard Transistor-Transistor Logic (TTL) voltage levels, ensuring compatibility with a wide range of digital devices and control systems.
- Opto-22 Compatibility: Designed to interface seamlessly with Opto-22 digital I/O racks and modules, allowing easy integration into existing industrial control infrastructures.
- 8255 Mode 0 Emulation: Emulates the Intel 8255 PPI in Mode 0, providing a familiar programming model and compatibility with legacy software and hardware systems.
- PC/104 Bus Interface: Fully compliant with the PC/104 standard, supporting stackable embedded system configurations without the need for a backplane.
- Interrupt Support: Configurable interrupt request (IRQ) lines including IRQ5, IRQ9, IRQ10, IRQ11, IRQ12, and IRQ15 for event-driven I/O operations.
- Compact Form Factor: Measures 95 mm x 90 mm, optimized for embedded and space-constrained applications.
- Industrial Reliability: Designed for robust operation in industrial environments, with durable construction and stable electrical performance.
- Flexible Configuration: Each I/O port can be configured as input or output under software control, enabling dynamic reconfiguration for different tasks.
- High-Speed Digital Operation: Supports fast digital signal switching suitable for real-time control and monitoring applications.
3. Technical Specifications
- Form Factor: PC/104 (stackable embedded module)
- Bus Interface: PC/104 (ISA-compatible 8/16-bit bus)
- Digital I/O Channels: 48 TTL-level lines
- Logic Levels:
- Input high voltage (VIH): typically 2.0 V min
- Input low voltage (VIL): typically 0.8 V max
- Output high voltage (VOH): typically 2.4 V min
- Output low voltage (VOL): typically 0.4 V max
- I/O Configuration: Programmable in groups of 8 bits (Port A, Port B, Port C per 8255 standard)
- Emulation: Intel 8255 PPI Mode 0 (basic input/output mode)
- Interrupt Lines: IRQ5, IRQ9, IRQ10, IRQ11, IRQ12, IRQ15 selectable
- Dimensions: 95 mm (L) × 90 mm (W)
- Weight: Approximately 80–120 g (typical for PC/104 modules of this size)
- Power Requirements: +5 V DC (typical), current consumption dependent on I/O load
- Operating Temperature: Typically 0°C to +70°C (industrial versions may support extended ranges)
- Storage Temperature: -40°C to +85°C
- Humidity: 5% to 95% non-condensing
- Connectors: Standard 50-pin headers compatible with Opto-22 racks and digital I/O cables
- Mounting: PC/104 stack-through connectors with mechanical standoffs for secure installation
4. Functionality
The AX10420 functions as a digital I/O expansion module for embedded PC/104 systems. It provides 48 TTL-compatible digital lines that can be configured as inputs or outputs in software. The module emulates the Intel 8255 PPI in Mode 0, meaning each of the three ports (A, B, and C) can be independently programmed for input or output operation. This allows flexible control of digital devices such as relays, sensors, switches, LEDs, and actuators.
Use Cases and Applications:
- Industrial automation and process control systems
- Embedded control units in machinery and robotics
- Data acquisition and monitoring systems
- Laboratory instrumentation and test equipment
- Digital signal interfacing for PLCs and SCADA systems
- OEM embedded controller integration
- Signal conditioning and digital control in transportation, energy, and manufacturing sectors
Compatibility:
- Fully compatible with PC/104 embedded system architecture
- Software-compatible with 8255-based I/O control routines
- Hardware-compatible with Opto-22 digital I/O racks and accessories
- Can be used with DOS, Windows, Linux, and real-time operating systems supporting PC/104 I/O access
5. Components & Accessories
Included Items:
- AX10420 PC/104 digital I/O module
- PC/104 stack-through connectors (pre-installed)
- Mounting hardware (standoffs, screws)
- Documentation (user manual, pinout diagram, installation guide)
Optional Accessories:
- Opto-22 compatible I/O racks and terminal boards
- Ribbon cables (50-pin) for external signal interfacing
- PC/104 stack extenders or spacers
- Software drivers and example code libraries
- Protective enclosures or DIN-rail mounting kits (depending on system integration)
Connectors:
- 50-pin dual-row header connectors for digital I/O lines
- PC/104 bus connectors for power and data interface
- Optional external connectors for field wiring or breakout boards
6. Installation & Setup
Requirements:
- Host system with available PC/104 slot
- +5 V DC power supply
- Compatible operating system and I/O driver support
Mounting Options:
- Stackable installation on PC/104 bus using standard mounting holes and standoffs
- Can be positioned above or below other PC/104 modules in the stack
- Mechanical alignment ensured by PC/104 connector design
Configuration:
- I/O direction (input/output) configured via software registers following 8255 programming model
- Interrupts enabled and assigned through jumper or software configuration (IRQ5, IRQ9–12, IRQ15)
- Address selection typically via onboard DIP switches or jumpers (depending on manufacturer implementation)
- Optional pull-up or pull-down resistors may be configured for input lines
Setup Procedure:
1. Power off the host system.
2. Mount the AX10420 module onto the PC/104 stack using the provided standoffs.
3. Connect the digital I/O cables or Opto-22 rack interface.
4. Configure base address and IRQ settings as required.
5. Power on the system and verify module detection.
6. Load or install the appropriate driver or software library.
7. Test I/O functionality using diagnostic utilities or custom applications.
7. Performance & Capabilities
- Speed: Supports high-speed digital switching suitable for real-time control applications; typical I/O access times in the microsecond range depending on host CPU and bus speed.
- Capacity: 48 independent digital channels, configurable in groups of 8 bits.
- Efficiency: Low power consumption due to TTL logic design and efficient PC/104 bus interface.
- Response Time: Determined by host system and interrupt configuration; capable of handling rapid digital signal transitions.
- Reliability: Solid-state design with no moving parts; suitable for continuous operation in industrial environments.
- Limitations:
- TTL-level signals only (not isolated or high-voltage tolerant).
- Requires external buffering or isolation for high-current or high-voltage applications.
- Limited to PC/104 bus systems (not directly compatible with PCIe or USB without adapters).
8. Standards & Compliance
- Bus Standard: PC/104 (IEEE P996.1, ISA-compatible)
- Electrical Interface: TTL logic levels per standard digital I/O specifications
- Compatibility: Opto-22 digital I/O standard
- Emulation Standard: Intel 8255 PPI Mode 0
- Regulatory Compliance:
- CE (Electromagnetic Compatibility, if applicable)
- RoHS (Restriction of Hazardous Substances) compliant materials
- Designed to meet industrial EMC and ESD protection standards (depending on manufacturer implementation)
- Industry Standards:
- PC/104 Consortium mechanical and electrical specifications
- TTL logic voltage and current standards
9. Additional Information
Warranty: Typically 1–2 years limited warranty covering manufacturing defects (varies by supplier).
Technical Support:
- Documentation and software support available from manufacturer or distributor.
- Example code and driver libraries for major operating systems.
- Engineering support for integration and troubleshooting.
Maintenance:
- No routine maintenance required; solid-state design ensures long operational life.
- Periodic inspection of connectors and cables recommended in industrial environments.
- Firmware or driver updates may be provided to enhance compatibility or performance.
Updates & Lifecycle:
- Long-term availability typical for industrial PC/104 modules.
- Backward compatibility maintained with legacy PC/104 systems.
- May be succeeded by newer models offering higher integration or isolation features.
Summary
The AX10420 48-bit Digital I/O TTL PC/104 Module is a versatile, high-density digital interface solution for embedded and industrial control systems. With 48 programmable TTL-level I/O lines, Opto-22 compatibility, and 8255 Mode 0 emulation, it provides a flexible and reliable platform for digital signal control and monitoring. Its compact 95 × 90 mm PC/104 form factor allows seamless integration into stackable embedded systems, while support for multiple IRQ lines and software-configurable I/O directions ensures adaptability across a wide range of applications. Designed for robust performance, the AX10420 is ideal for automation, data acquisition, and embedded control tasks requiring dependable digital interfacing in a compact, industry-standard format.
Product Name: 48-bit Digital I/O TTL PC/104 Module
Model: AX10420
Series: AX10 Series (Industrial PC/104 I/O Modules)
Article Number: AX10420
Manufacturer: [Manufacturer not specified in source; typically produced by an industrial embedded systems vendor specializing in PC/104 modules]
The AX10420 is a compact, high-performance digital input/output (I/O) module designed for embedded and industrial control applications. It provides 48 channels of TTL-level digital I/O in a PC/104 form factor, offering full compatibility with Opto-22 digital I/O standards and emulation of the Intel 8255 Programmable Peripheral Interface (PPI) operating in Mode 0. This module is engineered for integration into PC/104-based embedded systems, enabling reliable digital signal interfacing, control, and monitoring in automation, instrumentation, and data acquisition environments.
2. Key Features
- 48-Bit Digital I/O: Provides 48 individually programmable digital input/output lines for flexible signal interfacing.
- TTL Logic Compatibility: Supports standard Transistor-Transistor Logic (TTL) voltage levels, ensuring compatibility with a wide range of digital devices and control systems.
- Opto-22 Compatibility: Designed to interface seamlessly with Opto-22 digital I/O racks and modules, allowing easy integration into existing industrial control infrastructures.
- 8255 Mode 0 Emulation: Emulates the Intel 8255 PPI in Mode 0, providing a familiar programming model and compatibility with legacy software and hardware systems.
- PC/104 Bus Interface: Fully compliant with the PC/104 standard, supporting stackable embedded system configurations without the need for a backplane.
- Interrupt Support: Configurable interrupt request (IRQ) lines including IRQ5, IRQ9, IRQ10, IRQ11, IRQ12, and IRQ15 for event-driven I/O operations.
- Compact Form Factor: Measures 95 mm x 90 mm, optimized for embedded and space-constrained applications.
- Industrial Reliability: Designed for robust operation in industrial environments, with durable construction and stable electrical performance.
- Flexible Configuration: Each I/O port can be configured as input or output under software control, enabling dynamic reconfiguration for different tasks.
- High-Speed Digital Operation: Supports fast digital signal switching suitable for real-time control and monitoring applications.
3. Technical Specifications
- Form Factor: PC/104 (stackable embedded module)
- Bus Interface: PC/104 (ISA-compatible 8/16-bit bus)
- Digital I/O Channels: 48 TTL-level lines
- Logic Levels:
- Input high voltage (VIH): typically 2.0 V min
- Input low voltage (VIL): typically 0.8 V max
- Output high voltage (VOH): typically 2.4 V min
- Output low voltage (VOL): typically 0.4 V max
- I/O Configuration: Programmable in groups of 8 bits (Port A, Port B, Port C per 8255 standard)
- Emulation: Intel 8255 PPI Mode 0 (basic input/output mode)
- Interrupt Lines: IRQ5, IRQ9, IRQ10, IRQ11, IRQ12, IRQ15 selectable
- Dimensions: 95 mm (L) × 90 mm (W)
- Weight: Approximately 80–120 g (typical for PC/104 modules of this size)
- Power Requirements: +5 V DC (typical), current consumption dependent on I/O load
- Operating Temperature: Typically 0°C to +70°C (industrial versions may support extended ranges)
- Storage Temperature: -40°C to +85°C
- Humidity: 5% to 95% non-condensing
- Connectors: Standard 50-pin headers compatible with Opto-22 racks and digital I/O cables
- Mounting: PC/104 stack-through connectors with mechanical standoffs for secure installation
4. Functionality
The AX10420 functions as a digital I/O expansion module for embedded PC/104 systems. It provides 48 TTL-compatible digital lines that can be configured as inputs or outputs in software. The module emulates the Intel 8255 PPI in Mode 0, meaning each of the three ports (A, B, and C) can be independently programmed for input or output operation. This allows flexible control of digital devices such as relays, sensors, switches, LEDs, and actuators.
Use Cases and Applications:
- Industrial automation and process control systems
- Embedded control units in machinery and robotics
- Data acquisition and monitoring systems
- Laboratory instrumentation and test equipment
- Digital signal interfacing for PLCs and SCADA systems
- OEM embedded controller integration
- Signal conditioning and digital control in transportation, energy, and manufacturing sectors
Compatibility:
- Fully compatible with PC/104 embedded system architecture
- Software-compatible with 8255-based I/O control routines
- Hardware-compatible with Opto-22 digital I/O racks and accessories
- Can be used with DOS, Windows, Linux, and real-time operating systems supporting PC/104 I/O access
5. Components & Accessories
Included Items:
- AX10420 PC/104 digital I/O module
- PC/104 stack-through connectors (pre-installed)
- Mounting hardware (standoffs, screws)
- Documentation (user manual, pinout diagram, installation guide)
Optional Accessories:
- Opto-22 compatible I/O racks and terminal boards
- Ribbon cables (50-pin) for external signal interfacing
- PC/104 stack extenders or spacers
- Software drivers and example code libraries
- Protective enclosures or DIN-rail mounting kits (depending on system integration)
Connectors:
- 50-pin dual-row header connectors for digital I/O lines
- PC/104 bus connectors for power and data interface
- Optional external connectors for field wiring or breakout boards
6. Installation & Setup
Requirements:
- Host system with available PC/104 slot
- +5 V DC power supply
- Compatible operating system and I/O driver support
Mounting Options:
- Stackable installation on PC/104 bus using standard mounting holes and standoffs
- Can be positioned above or below other PC/104 modules in the stack
- Mechanical alignment ensured by PC/104 connector design
Configuration:
- I/O direction (input/output) configured via software registers following 8255 programming model
- Interrupts enabled and assigned through jumper or software configuration (IRQ5, IRQ9–12, IRQ15)
- Address selection typically via onboard DIP switches or jumpers (depending on manufacturer implementation)
- Optional pull-up or pull-down resistors may be configured for input lines
Setup Procedure:
1. Power off the host system.
2. Mount the AX10420 module onto the PC/104 stack using the provided standoffs.
3. Connect the digital I/O cables or Opto-22 rack interface.
4. Configure base address and IRQ settings as required.
5. Power on the system and verify module detection.
6. Load or install the appropriate driver or software library.
7. Test I/O functionality using diagnostic utilities or custom applications.
7. Performance & Capabilities
- Speed: Supports high-speed digital switching suitable for real-time control applications; typical I/O access times in the microsecond range depending on host CPU and bus speed.
- Capacity: 48 independent digital channels, configurable in groups of 8 bits.
- Efficiency: Low power consumption due to TTL logic design and efficient PC/104 bus interface.
- Response Time: Determined by host system and interrupt configuration; capable of handling rapid digital signal transitions.
- Reliability: Solid-state design with no moving parts; suitable for continuous operation in industrial environments.
- Limitations:
- TTL-level signals only (not isolated or high-voltage tolerant).
- Requires external buffering or isolation for high-current or high-voltage applications.
- Limited to PC/104 bus systems (not directly compatible with PCIe or USB without adapters).
8. Standards & Compliance
- Bus Standard: PC/104 (IEEE P996.1, ISA-compatible)
- Electrical Interface: TTL logic levels per standard digital I/O specifications
- Compatibility: Opto-22 digital I/O standard
- Emulation Standard: Intel 8255 PPI Mode 0
- Regulatory Compliance:
- CE (Electromagnetic Compatibility, if applicable)
- RoHS (Restriction of Hazardous Substances) compliant materials
- Designed to meet industrial EMC and ESD protection standards (depending on manufacturer implementation)
- Industry Standards:
- PC/104 Consortium mechanical and electrical specifications
- TTL logic voltage and current standards
9. Additional Information
Warranty: Typically 1–2 years limited warranty covering manufacturing defects (varies by supplier).
Technical Support:
- Documentation and software support available from manufacturer or distributor.
- Example code and driver libraries for major operating systems.
- Engineering support for integration and troubleshooting.
Maintenance:
- No routine maintenance required; solid-state design ensures long operational life.
- Periodic inspection of connectors and cables recommended in industrial environments.
- Firmware or driver updates may be provided to enhance compatibility or performance.
Updates & Lifecycle:
- Long-term availability typical for industrial PC/104 modules.
- Backward compatibility maintained with legacy PC/104 systems.
- May be succeeded by newer models offering higher integration or isolation features.
Summary
The AX10420 48-bit Digital I/O TTL PC/104 Module is a versatile, high-density digital interface solution for embedded and industrial control systems. With 48 programmable TTL-level I/O lines, Opto-22 compatibility, and 8255 Mode 0 emulation, it provides a flexible and reliable platform for digital signal control and monitoring. Its compact 95 × 90 mm PC/104 form factor allows seamless integration into stackable embedded systems, while support for multiple IRQ lines and software-configurable I/O directions ensures adaptability across a wide range of applications. Designed for robust performance, the AX10420 is ideal for automation, data acquisition, and embedded control tasks requiring dependable digital interfacing in a compact, industry-standard format.
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