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- Four Independent Serial Ports: Provides 4 isolated RS-422/485 ports for simultaneous multi-device communication.
- High-Speed Data Transmission: Supports baud rates from 50 bps up to 921.6 kbps, enabling fast and reliable data exchange.
- 2 kV Isolation Protection: Each port is optically isolated up to 2,000 V, protecting the system from electrical surges, ground loops, and signal interference.
- ADDS (Automatic Data Direction Switching): Built-in automatic data direction control for RS-485 communication eliminates the need for manual RTS signal handling, simplifying software development and ensuring efficient half-duplex communication.
- Flexible Interrupt Configuration: Supports IRQ 2–5, 7, 10–12, and 15, allowing flexible resource allocation and compatibility with various PC architectures.
- Standard Interface Connectors: Equipped with male DB9 connectors for each port, ensuring compatibility with standard serial cables and devices.
- Compact Form Factor: The board measures 157 mm × 83 mm, suitable for installation in standard PC slots without occupying excessive space.
- Industrial Reliability: Designed for continuous operation in demanding environments, with robust electrical isolation and stable performance under industrial conditions.
- Wide Compatibility: Compatible with a broad range of operating systems and industrial applications requiring RS-422/485 communication.
- High-Speed Data Transmission: Supports baud rates from 50 bps up to 921.6 kbps, enabling fast and reliable data exchange.
- 2 kV Isolation Protection: Each port is optically isolated up to 2,000 V, protecting the system from electrical surges, ground loops, and signal interference.
- ADDS (Automatic Data Direction Switching): Built-in automatic data direction control for RS-485 communication eliminates the need for manual RTS signal handling, simplifying software development and ensuring efficient half-duplex communication.
- Flexible Interrupt Configuration: Supports IRQ 2–5, 7, 10–12, and 15, allowing flexible resource allocation and compatibility with various PC architectures.
- Standard Interface Connectors: Equipped with male DB9 connectors for each port, ensuring compatibility with standard serial cables and devices.
- Compact Form Factor: The board measures 157 mm × 83 mm, suitable for installation in standard PC slots without occupying excessive space.
- Industrial Reliability: Designed for continuous operation in demanding environments, with robust electrical isolation and stable performance under industrial conditions.
- Wide Compatibility: Compatible with a broad range of operating systems and industrial applications requiring RS-422/485 communication.
1. Product Overview
Product Name: CI-134I
Model Number: CI-134I
Series: CI Series – Industrial Multiport Serial Communication Boards
Article Number: CI-134I
Manufacturer: Moxa Inc.
The Moxa CI-134I is a high-performance, industrial-grade multiport serial communication board designed to provide reliable and isolated RS-422/485 connectivity for PC-based systems. It is part of Moxa’s CI Series of intelligent serial interface cards, engineered for robust data communication in industrial automation, process control, and data acquisition environments. The CI-134I offers four independent RS-422/485 serial ports with 2 kV isolation protection, ensuring stable and interference-free communication between host systems and connected serial devices.
2. Key Features
- Four Independent Serial Ports: Provides 4 isolated RS-422/485 ports for simultaneous multi-device communication.
- High-Speed Data Transmission: Supports baud rates from 50 bps up to 921.6 kbps, enabling fast and reliable data exchange.
- 2 kV Isolation Protection: Each port is optically isolated up to 2,000 V, protecting the system from electrical surges, ground loops, and signal interference.
- ADDS (Automatic Data Direction Switching): Built-in automatic data direction control for RS-485 communication eliminates the need for manual RTS signal handling, simplifying software development and ensuring efficient half-duplex communication.
- Flexible Interrupt Configuration: Supports IRQ 2–5, 7, 10–12, and 15, allowing flexible resource allocation and compatibility with various PC architectures.
- Standard Interface Connectors: Equipped with male DB9 connectors for each port, ensuring compatibility with standard serial cables and devices.
- Compact Form Factor: The board measures 157 mm × 83 mm, suitable for installation in standard PC slots without occupying excessive space.
- Industrial Reliability: Designed for continuous operation in demanding environments, with robust electrical isolation and stable performance under industrial conditions.
- Wide Compatibility: Compatible with a broad range of operating systems and industrial applications requiring RS-422/485 communication.
3. Technical Specifications
- Product Type: Multiport Serial Communication Board
- Model: CI-134I
- Number of Ports: 4 independent serial ports
- Interface Type: RS-422/485 (software-selectable)
- Isolation Protection: 2 kV optical isolation per port
- Baud Rate: 50 bps to 921,600 bps (50–921.6 kbps)
- Connector Type: DB9 male (x4)
- Dimensions: 157 mm (L) × 83 mm (W)
- Interrupt Levels: IRQ 2, 3, 4, 5, 7, 10, 11, 12, 15
- Bus Interface: AT (ISA) bus compatible
- Data Direction Control: ADDS (Automatic Data Direction Switching)
- Signal Lines (RS-422): TX+, TX–, RX+, RX–
- Signal Lines (RS-485): Data+, Data–
- Isolation Voltage: 2,000 V (optical isolation)
- Transmission Mode: Full-duplex (RS-422) / Half-duplex (RS-485)
- Power Requirements: Derived from PC bus (typical for AT cards)
- Operating Temperature: Typically 0°C to 55°C (industrial range, depending on system environment)
- Storage Temperature: –20°C to 85°C (typical)
- Humidity: 5%–95% RH, non-condensing
- Weight: Approx. 150–200 g (depending on configuration)
- Material: PCB with industrial-grade components and gold-plated edge connectors
4. Functionality
The Moxa CI-134I functions as a four-port serial communication interface card that enables PCs to connect to multiple RS-422 or RS-485 devices simultaneously. Each port can be configured independently for RS-422 or RS-485 operation, supporting both full-duplex and half-duplex communication modes.
How It Works:
When installed in a PC’s ISA slot, the CI-134I provides four additional serial communication channels. Each channel can transmit and receive data through differential signaling, which enhances noise immunity and allows for longer cable runs compared to standard RS-232 interfaces. The built-in 2 kV isolation ensures that electrical surges or ground potential differences between devices do not damage the host system.
ADDS Functionality:
The Automatic Data Direction Switching (ADDS) feature automatically controls the data flow direction in RS-485 mode. This eliminates the need for software-based RTS signal toggling, simplifying application development and ensuring efficient half-duplex communication without data collision.
Use Cases and Applications:
- Industrial automation systems connecting PLCs, sensors, and controllers
- Building management systems (BMS) and HVAC control networks
- SCADA (Supervisory Control and Data Acquisition) systems
- Data acquisition and monitoring equipment
- Factory process control and instrumentation
- Transportation and energy management systems
- Serial device networking and legacy equipment integration
Compatibility:
The CI-134I is compatible with standard PC/AT systems and supports a wide range of operating systems through Moxa’s driver packages. It can be integrated into both legacy and modern industrial computing environments requiring reliable serial communication.
5. Components & Accessories
Included Items:
- CI-134I 4-port RS-422/485 AT card
- User manual and installation guide
- Driver and utility software (typically provided on CD or via download)
Optional Accessories:
- DB9-to-terminal block adapters for field wiring
- Shielded serial cables for industrial environments
- Rackmount or DIN-rail enclosures (for system integration)
- Surge protection modules for extended electrical protection
Connectors:
- Four DB9 male connectors on the card’s external interface
- Standard pin assignments for RS-422/485 communication
- Gold-plated contacts for reliable signal transmission
6. Installation & Setup
System Requirements:
- PC/AT compatible system with available ISA slot
- Supported operating system (Windows, Linux, or DOS, depending on driver availability)
- Power supplied through the PC bus
Installation Steps:
1. Power off the host PC and remove the cover.
2. Insert the CI-134I card into an available ISA slot, ensuring proper alignment with the bus connector.
3. Secure the card with the mounting screw.
4. Connect serial devices to the DB9 male connectors using appropriate RS-422/485 cables.
5. Configure the desired communication mode (RS-422 or RS-485) via software or jumper settings (depending on version).
6. Install the Moxa driver package and configure port parameters (baud rate, parity, stop bits, etc.) through the provided utility.
7. Verify communication using diagnostic tools or terminal software.
Mounting Options:
- Standard internal mounting in PC chassis
- Optional external breakout panels for easier cable management
Configuration:
- Software-selectable communication parameters
- IRQ and I/O address configuration via jumpers or software utility
- ADDS automatically manages RS-485 data direction
7. Performance & Capabilities
Speed and Throughput:
- Supports data rates from 50 bps to 921.6 kbps, suitable for both low-speed control signals and high-speed data acquisition.
- Efficient data handling through onboard buffering and interrupt-driven communication.
Capacity:
- Four independent serial channels allow simultaneous communication with multiple devices.
- Each port can handle full-duplex (RS-422) or half-duplex (RS-485) data streams.
Efficiency:
- ADDS ensures optimal data flow without manual control, reducing CPU overhead.
- Optical isolation minimizes data errors caused by electrical noise or ground loops.
Limitations:
- Designed for ISA bus systems; not compatible with modern PCI or PCIe slots without adapters.
- Limited to RS-422/485 interfaces (no RS-232 support).
- Requires proper termination and biasing for RS-485 networks to ensure signal integrity.
Reliability:
- Industrial-grade design ensures stable operation in harsh environments.
- Long MTBF (Mean Time Between Failures) due to high-quality components and isolation design.
8. Standards & Compliance
Electrical and Communication Standards:
- RS-422 (EIA/TIA-422) compliant differential signaling
- RS-485 (EIA/TIA-485) compliant differential signaling
- Optical isolation meeting 2 kV protection standards
Regulatory Compliance:
- CE (Conformité Européenne) compliant for electromagnetic compatibility
- FCC Class A compliance for industrial environments
- RoHS (Restriction of Hazardous Substances) compliant materials
- ISO 9001 certified manufacturing process (Moxa standard)
Industry Standards:
- Compatible with industrial communication protocols utilizing RS-422/485 physical layers (e.g., Modbus RTU, Profibus, BACnet MS/TP)
- Designed for integration into industrial control systems adhering to IEC and ANSI standards for serial communication
9. Additional Information
Warranty:
- Standard Moxa warranty (typically 3 years) covering manufacturing defects and hardware failures under normal operating conditions.
Support:
- Comprehensive technical support via Moxa’s global service network
- Online resources including driver downloads, FAQs, and configuration guides
- Firmware and driver updates available through Moxa’s official website
Maintenance:
- Minimal maintenance required; periodic inspection of connectors and cables recommended
- Ensure proper grounding and shielding for optimal performance
- Firmware and driver updates should be applied as released to maintain compatibility and performance
Updates and Longevity:
- Long-term product availability typical of Moxa’s industrial product lines
- Backward compatibility with earlier CI-series models ensures smooth system upgrades
- Continuous driver support for legacy and modern operating systems
Summary
The Moxa CI-134I is a robust, industrial-grade 4-port RS-422/485 AT communication card engineered for reliable, high-speed serial connectivity in PC-based control and automation systems. With 2 kV optical isolation, automatic data direction switching (ADDS), and flexible interrupt configuration, it delivers dependable performance in electrically noisy industrial environments. Its compact 157 × 83 mm form factor, standard DB9 connectors, and wide baud rate range (50–921.6 kbps) make it an ideal solution for connecting multiple serial devices such as PLCs, sensors, and controllers to a single host system.
Designed for long-term industrial use, the CI-134I adheres to international communication and safety standards, ensuring compatibility, reliability, and ease of integration across diverse industrial applications.
Product Name: CI-134I
Model Number: CI-134I
Series: CI Series – Industrial Multiport Serial Communication Boards
Article Number: CI-134I
Manufacturer: Moxa Inc.
The Moxa CI-134I is a high-performance, industrial-grade multiport serial communication board designed to provide reliable and isolated RS-422/485 connectivity for PC-based systems. It is part of Moxa’s CI Series of intelligent serial interface cards, engineered for robust data communication in industrial automation, process control, and data acquisition environments. The CI-134I offers four independent RS-422/485 serial ports with 2 kV isolation protection, ensuring stable and interference-free communication between host systems and connected serial devices.
2. Key Features
- Four Independent Serial Ports: Provides 4 isolated RS-422/485 ports for simultaneous multi-device communication.
- High-Speed Data Transmission: Supports baud rates from 50 bps up to 921.6 kbps, enabling fast and reliable data exchange.
- 2 kV Isolation Protection: Each port is optically isolated up to 2,000 V, protecting the system from electrical surges, ground loops, and signal interference.
- ADDS (Automatic Data Direction Switching): Built-in automatic data direction control for RS-485 communication eliminates the need for manual RTS signal handling, simplifying software development and ensuring efficient half-duplex communication.
- Flexible Interrupt Configuration: Supports IRQ 2–5, 7, 10–12, and 15, allowing flexible resource allocation and compatibility with various PC architectures.
- Standard Interface Connectors: Equipped with male DB9 connectors for each port, ensuring compatibility with standard serial cables and devices.
- Compact Form Factor: The board measures 157 mm × 83 mm, suitable for installation in standard PC slots without occupying excessive space.
- Industrial Reliability: Designed for continuous operation in demanding environments, with robust electrical isolation and stable performance under industrial conditions.
- Wide Compatibility: Compatible with a broad range of operating systems and industrial applications requiring RS-422/485 communication.
3. Technical Specifications
- Product Type: Multiport Serial Communication Board
- Model: CI-134I
- Number of Ports: 4 independent serial ports
- Interface Type: RS-422/485 (software-selectable)
- Isolation Protection: 2 kV optical isolation per port
- Baud Rate: 50 bps to 921,600 bps (50–921.6 kbps)
- Connector Type: DB9 male (x4)
- Dimensions: 157 mm (L) × 83 mm (W)
- Interrupt Levels: IRQ 2, 3, 4, 5, 7, 10, 11, 12, 15
- Bus Interface: AT (ISA) bus compatible
- Data Direction Control: ADDS (Automatic Data Direction Switching)
- Signal Lines (RS-422): TX+, TX–, RX+, RX–
- Signal Lines (RS-485): Data+, Data–
- Isolation Voltage: 2,000 V (optical isolation)
- Transmission Mode: Full-duplex (RS-422) / Half-duplex (RS-485)
- Power Requirements: Derived from PC bus (typical for AT cards)
- Operating Temperature: Typically 0°C to 55°C (industrial range, depending on system environment)
- Storage Temperature: –20°C to 85°C (typical)
- Humidity: 5%–95% RH, non-condensing
- Weight: Approx. 150–200 g (depending on configuration)
- Material: PCB with industrial-grade components and gold-plated edge connectors
4. Functionality
The Moxa CI-134I functions as a four-port serial communication interface card that enables PCs to connect to multiple RS-422 or RS-485 devices simultaneously. Each port can be configured independently for RS-422 or RS-485 operation, supporting both full-duplex and half-duplex communication modes.
How It Works:
When installed in a PC’s ISA slot, the CI-134I provides four additional serial communication channels. Each channel can transmit and receive data through differential signaling, which enhances noise immunity and allows for longer cable runs compared to standard RS-232 interfaces. The built-in 2 kV isolation ensures that electrical surges or ground potential differences between devices do not damage the host system.
ADDS Functionality:
The Automatic Data Direction Switching (ADDS) feature automatically controls the data flow direction in RS-485 mode. This eliminates the need for software-based RTS signal toggling, simplifying application development and ensuring efficient half-duplex communication without data collision.
Use Cases and Applications:
- Industrial automation systems connecting PLCs, sensors, and controllers
- Building management systems (BMS) and HVAC control networks
- SCADA (Supervisory Control and Data Acquisition) systems
- Data acquisition and monitoring equipment
- Factory process control and instrumentation
- Transportation and energy management systems
- Serial device networking and legacy equipment integration
Compatibility:
The CI-134I is compatible with standard PC/AT systems and supports a wide range of operating systems through Moxa’s driver packages. It can be integrated into both legacy and modern industrial computing environments requiring reliable serial communication.
5. Components & Accessories
Included Items:
- CI-134I 4-port RS-422/485 AT card
- User manual and installation guide
- Driver and utility software (typically provided on CD or via download)
Optional Accessories:
- DB9-to-terminal block adapters for field wiring
- Shielded serial cables for industrial environments
- Rackmount or DIN-rail enclosures (for system integration)
- Surge protection modules for extended electrical protection
Connectors:
- Four DB9 male connectors on the card’s external interface
- Standard pin assignments for RS-422/485 communication
- Gold-plated contacts for reliable signal transmission
6. Installation & Setup
System Requirements:
- PC/AT compatible system with available ISA slot
- Supported operating system (Windows, Linux, or DOS, depending on driver availability)
- Power supplied through the PC bus
Installation Steps:
1. Power off the host PC and remove the cover.
2. Insert the CI-134I card into an available ISA slot, ensuring proper alignment with the bus connector.
3. Secure the card with the mounting screw.
4. Connect serial devices to the DB9 male connectors using appropriate RS-422/485 cables.
5. Configure the desired communication mode (RS-422 or RS-485) via software or jumper settings (depending on version).
6. Install the Moxa driver package and configure port parameters (baud rate, parity, stop bits, etc.) through the provided utility.
7. Verify communication using diagnostic tools or terminal software.
Mounting Options:
- Standard internal mounting in PC chassis
- Optional external breakout panels for easier cable management
Configuration:
- Software-selectable communication parameters
- IRQ and I/O address configuration via jumpers or software utility
- ADDS automatically manages RS-485 data direction
7. Performance & Capabilities
Speed and Throughput:
- Supports data rates from 50 bps to 921.6 kbps, suitable for both low-speed control signals and high-speed data acquisition.
- Efficient data handling through onboard buffering and interrupt-driven communication.
Capacity:
- Four independent serial channels allow simultaneous communication with multiple devices.
- Each port can handle full-duplex (RS-422) or half-duplex (RS-485) data streams.
Efficiency:
- ADDS ensures optimal data flow without manual control, reducing CPU overhead.
- Optical isolation minimizes data errors caused by electrical noise or ground loops.
Limitations:
- Designed for ISA bus systems; not compatible with modern PCI or PCIe slots without adapters.
- Limited to RS-422/485 interfaces (no RS-232 support).
- Requires proper termination and biasing for RS-485 networks to ensure signal integrity.
Reliability:
- Industrial-grade design ensures stable operation in harsh environments.
- Long MTBF (Mean Time Between Failures) due to high-quality components and isolation design.
8. Standards & Compliance
Electrical and Communication Standards:
- RS-422 (EIA/TIA-422) compliant differential signaling
- RS-485 (EIA/TIA-485) compliant differential signaling
- Optical isolation meeting 2 kV protection standards
Regulatory Compliance:
- CE (Conformité Européenne) compliant for electromagnetic compatibility
- FCC Class A compliance for industrial environments
- RoHS (Restriction of Hazardous Substances) compliant materials
- ISO 9001 certified manufacturing process (Moxa standard)
Industry Standards:
- Compatible with industrial communication protocols utilizing RS-422/485 physical layers (e.g., Modbus RTU, Profibus, BACnet MS/TP)
- Designed for integration into industrial control systems adhering to IEC and ANSI standards for serial communication
9. Additional Information
Warranty:
- Standard Moxa warranty (typically 3 years) covering manufacturing defects and hardware failures under normal operating conditions.
Support:
- Comprehensive technical support via Moxa’s global service network
- Online resources including driver downloads, FAQs, and configuration guides
- Firmware and driver updates available through Moxa’s official website
Maintenance:
- Minimal maintenance required; periodic inspection of connectors and cables recommended
- Ensure proper grounding and shielding for optimal performance
- Firmware and driver updates should be applied as released to maintain compatibility and performance
Updates and Longevity:
- Long-term product availability typical of Moxa’s industrial product lines
- Backward compatibility with earlier CI-series models ensures smooth system upgrades
- Continuous driver support for legacy and modern operating systems
Summary
The Moxa CI-134I is a robust, industrial-grade 4-port RS-422/485 AT communication card engineered for reliable, high-speed serial connectivity in PC-based control and automation systems. With 2 kV optical isolation, automatic data direction switching (ADDS), and flexible interrupt configuration, it delivers dependable performance in electrically noisy industrial environments. Its compact 157 × 83 mm form factor, standard DB9 connectors, and wide baud rate range (50–921.6 kbps) make it an ideal solution for connecting multiple serial devices such as PLCs, sensors, and controllers to a single host system.
Designed for long-term industrial use, the CI-134I adheres to international communication and safety standards, ensuring compatibility, reliability, and ease of integration across diverse industrial applications.
No manuals/catalogs available.
No accessories available.
