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- Four Independent RS-232 Ports: Provides four fully functional serial communication channels for simultaneous data transmission and reception.
- High-Speed Data Transfer: Supports baud rates from 50 bps up to 921,600 bps, enabling compatibility with a wide range of serial devices and communication requirements.
- TI 16550C UART Chipset: Each port is equipped with a 16-byte FIFO buffer, ensuring efficient data handling, reduced CPU load, and minimized data loss during high-speed communication.
- Software-Based Configuration: No jumpers or DIP switches are required; all port parameters (I/O address, IRQ, etc.) are configured via software utilities, simplifying installation and maintenance.
- Compact AT Form Factor: Designed for embedded and industrial PC systems with limited space, measuring 157 mm x 83 mm, allowing easy integration into standard AT slots.
- RJ45 Connectors: Utilizes RJ45 connectors for serial port connections, offering a compact and secure interface that simplifies cabling and reduces clutter.
- Space-Saving Design: Optimized for embedded systems and compact industrial PCs where board space is at a premium.
- Wide Baud Rate Range: Supports both low-speed and high-speed serial communication, making it suitable for diverse industrial applications.
- Reliable Industrial-Grade Construction: Engineered for continuous operation in demanding environments, ensuring long-term stability and durability.
- Moxa Software Support: Compatible with Moxa’s configuration and diagnostic tools for easy setup, monitoring, and troubleshooting.
- High-Speed Data Transfer: Supports baud rates from 50 bps up to 921,600 bps, enabling compatibility with a wide range of serial devices and communication requirements.
- TI 16550C UART Chipset: Each port is equipped with a 16-byte FIFO buffer, ensuring efficient data handling, reduced CPU load, and minimized data loss during high-speed communication.
- Software-Based Configuration: No jumpers or DIP switches are required; all port parameters (I/O address, IRQ, etc.) are configured via software utilities, simplifying installation and maintenance.
- Compact AT Form Factor: Designed for embedded and industrial PC systems with limited space, measuring 157 mm x 83 mm, allowing easy integration into standard AT slots.
- RJ45 Connectors: Utilizes RJ45 connectors for serial port connections, offering a compact and secure interface that simplifies cabling and reduces clutter.
- Space-Saving Design: Optimized for embedded systems and compact industrial PCs where board space is at a premium.
- Wide Baud Rate Range: Supports both low-speed and high-speed serial communication, making it suitable for diverse industrial applications.
- Reliable Industrial-Grade Construction: Engineered for continuous operation in demanding environments, ensuring long-term stability and durability.
- Moxa Software Support: Compatible with Moxa’s configuration and diagnostic tools for easy setup, monitoring, and troubleshooting.
1. Product Overview
Product Name: 4-Port RS232 AT Card
Model: CI-104JU
Series: CI Series Industrial Communication Interface Cards
Article Number: CI-104JU
Manufacturer: Moxa Inc.
The Moxa CI-104JU is a high-performance, space-efficient 4-port RS-232 AT communication card designed for industrial and embedded computing environments. It provides reliable serial connectivity for legacy and modern systems requiring multiple asynchronous serial interfaces. Built around the Texas Instruments 16550C UART chipset, the CI-104JU delivers stable, high-speed data transmission and flexible configuration options through software-based setup, eliminating the need for manual jumper settings. Its compact AT form factor and RJ45 connectors make it ideal for embedded systems, industrial automation, and control applications where space and reliability are critical.
2. Key Features
- Four Independent RS-232 Ports: Provides four fully functional serial communication channels for simultaneous data transmission and reception.
- High-Speed Data Transfer: Supports baud rates from 50 bps up to 921,600 bps, enabling compatibility with a wide range of serial devices and communication requirements.
- TI 16550C UART Chipset: Each port is equipped with a 16-byte FIFO buffer, ensuring efficient data handling, reduced CPU load, and minimized data loss during high-speed communication.
- Software-Based Configuration: No jumpers or DIP switches are required; all port parameters (I/O address, IRQ, etc.) are configured via software utilities, simplifying installation and maintenance.
- Compact AT Form Factor: Designed for embedded and industrial PC systems with limited space, measuring 157 mm x 83 mm, allowing easy integration into standard AT slots.
- RJ45 Connectors: Utilizes RJ45 connectors for serial port connections, offering a compact and secure interface that simplifies cabling and reduces clutter.
- Space-Saving Design: Optimized for embedded systems and compact industrial PCs where board space is at a premium.
- Wide Baud Rate Range: Supports both low-speed and high-speed serial communication, making it suitable for diverse industrial applications.
- Reliable Industrial-Grade Construction: Engineered for continuous operation in demanding environments, ensuring long-term stability and durability.
- Moxa Software Support: Compatible with Moxa’s configuration and diagnostic tools for easy setup, monitoring, and troubleshooting.
3. Technical Specifications
- Model: CI-104JU
- Bus Interface: AT (ISA) bus
- Number of Ports: 4 independent RS-232 serial ports
- UART Type: Texas Instruments 16550C UART with 16-byte FIFO per port
- Baud Rate: 50 bps to 921,600 bps (configurable per port)
- Connector Type: RJ45 (8-pin modular jack)
- Configuration: Software-configurable (no jumpers required)
- Dimensions: 157 mm (L) × 83 mm (W)
- Weight: Approx. 100–150 g (typical for AT card of this size; manufacturer specification may vary)
- Signal Lines (RS-232): TxD, RxD, RTS, CTS, DTR, DSR, DCD, GND
- Operating Voltage: 5 V DC (supplied via AT bus)
- Power Consumption: Low power design (typically < 1 W)
- Operating Temperature: 0°C to 55°C (standard operating range)
- Storage Temperature: -20°C to 85°C
- Humidity: 5% to 95% RH, non-condensing
- Material: Multi-layer PCB with industrial-grade components
- Form Factor: Full-height AT card, compact length for embedded chassis
4. Functionality
The CI-104JU functions as a multi-port serial communication interface card, enabling PCs and embedded systems to connect to multiple RS-232 devices simultaneously. Each of the four ports operates independently, allowing concurrent communication with different serial peripherals such as PLCs, sensors, barcode scanners, modems, or industrial controllers.
How It Works:
The card interfaces with the host system via the AT (ISA) bus. Each port is managed by a TI 16550C UART, which buffers data in a 16-byte FIFO to ensure smooth data flow even under high-speed or high-load conditions. The software-configurable interface allows users to assign I/O addresses and IRQs without physically adjusting jumpers, simplifying system integration and reconfiguration.
Use Cases and Applications:
- Industrial automation and process control systems
- Embedded computing platforms requiring multiple serial interfaces
- Data acquisition and monitoring systems
- Point-of-sale (POS) terminals and kiosks
- Communication gateways and protocol converters
- Legacy equipment integration in modern computing environments
- Laboratory instrumentation and test equipment connectivity
Compatibility:
- Compatible with standard AT (ISA) bus architecture
- Supports major operating systems with appropriate drivers (e.g., DOS, Windows, Linux, depending on Moxa driver availability)
- Works with Moxa’s serial communication utilities for configuration and diagnostics
5. Components & Accessories
Included Items:
- CI-104JU 4-Port RS232 AT Card
- Quick installation guide or user manual (digital or printed)
- Software utilities and drivers (typically provided via download or CD-ROM)
Optional Accessories:
- RJ45-to-DB9 or RJ45-to-DB25 serial adapter cables (for connecting to standard serial devices)
- External serial breakout boxes for multi-port management
- Mounting brackets or retention clips for embedded chassis installation
Connectors:
- 4 × RJ45 connectors for RS-232 ports
- AT bus edge connector for system interface
6. Installation & Setup
System Requirements:
- AT (ISA) bus slot available on host system
- Compatible operating system with Moxa driver support
- Administrative privileges for software installation
Installation Steps:
1. Power off the host system and remove the chassis cover.
2. Insert the CI-104JU card into an available AT (ISA) slot, ensuring a secure connection.
3. Secure the card with a mounting screw or bracket.
4. Power on the system and install the Moxa configuration software or drivers.
5. Use the software utility to configure port parameters (I/O address, IRQ, baud rate, etc.).
6. Connect serial devices to the RJ45 ports using appropriate adapter cables.
7. Verify communication using diagnostic tools or terminal software.
Mounting Options:
- Standard AT slot mounting
- Suitable for embedded chassis or industrial PC enclosures
Configuration:
- Fully software-configurable; no jumpers or DIP switches required
- Supports dynamic reassignment of resources for flexible system integration
7. Performance & Capabilities
Speed:
- Supports baud rates from 50 bps to 921,600 bps, allowing both low-speed and high-speed serial communication.
Capacity:
- Four independent RS-232 channels, each capable of full-duplex communication.
Efficiency:
- TI 16550C UART with 16-byte FIFO buffers reduces CPU overhead and prevents data loss during high-speed transfers.
- Software configuration streamlines setup and minimizes downtime.
Reliability:
- Industrial-grade design ensures stable operation in continuous-use environments.
- RJ45 connectors provide secure, vibration-resistant connections.
Limitations:
- RS-232 only (no RS-422/485 support)
- AT (ISA) bus interface limits compatibility with modern PCI/PCIe systems unless used with legacy or embedded platforms.
Performance Highlights:
- Stable communication at up to 921.6 kbps per port
- Low latency and minimal data error rate due to FIFO buffering
- Consistent throughput across all four ports under simultaneous operation
8. Standards & Compliance
Electrical and Interface Standards:
- Complies with EIA/TIA RS-232 standard for serial communication
- AT (ISA) bus interface compliant with industry specifications
Certifications and Compliance:
- CE (Conformité Européenne) compliant (typical for Moxa industrial products)
- FCC Class A compliance for electromagnetic emissions (industrial environment)
- RoHS compliant (Restriction of Hazardous Substances)
- Manufactured under ISO 9001 quality management standards
Industry Standards Supported:
- RS-232 asynchronous serial communication standard
- UART 16550C compatibility for software and driver interoperability
9. Additional Information
Warranty:
- Standard Moxa warranty (typically 3 years for interface cards; confirm with manufacturer)
Technical Support:
- Comprehensive technical documentation and driver downloads available from Moxa’s official website
- Global technical support network for configuration, troubleshooting, and integration assistance
Maintenance:
- No moving parts; minimal maintenance required
- Periodic inspection of connectors and cables recommended for optimal performance
Firmware & Software Updates:
- Driver and utility updates available through Moxa’s support portal
- Backward compatibility maintained with previous driver versions
Service Life & Reliability:
- Designed for long-term industrial operation with high mean time between failures (MTBF)
- Stable performance under continuous operation in embedded and automation systems
Environmental Considerations:
- RoHS-compliant materials ensure environmentally responsible manufacturing
- Low power consumption contributes to energy-efficient system design
### Summary
The Moxa CI-104JU 4-Port RS232 AT Card is a compact, high-performance communication interface designed for industrial and embedded applications requiring multiple serial connections. Featuring four independent RS-232 ports, each powered by a TI 16550C UART with 16-byte FIFO buffers, it supports data rates up to 921.6 kbps while maintaining reliable, low-latency communication. Its software-configurable design eliminates the need for hardware jumpers, simplifying installation and system integration. With a compact 157 × 83 mm AT form factor and RJ45 connectors, the CI-104JU is optimized for space-constrained embedded systems and industrial PCs.
Engineered to meet industrial standards for reliability, compliance, and performance, the CI-104JU provides a robust solution for connecting legacy serial devices to modern computing platforms. It is ideal for automation, control, data acquisition, and communication gateway applications where dependable serial connectivity is essential.
In essence, the Moxa CI-104JU delivers industrial-grade reliability, flexible configuration, and high-speed serial performance in a compact AT card form factor—making it a trusted choice for engineers and system integrators seeking efficient multi-port RS-232 communication solutions.
Product Name: 4-Port RS232 AT Card
Model: CI-104JU
Series: CI Series Industrial Communication Interface Cards
Article Number: CI-104JU
Manufacturer: Moxa Inc.
The Moxa CI-104JU is a high-performance, space-efficient 4-port RS-232 AT communication card designed for industrial and embedded computing environments. It provides reliable serial connectivity for legacy and modern systems requiring multiple asynchronous serial interfaces. Built around the Texas Instruments 16550C UART chipset, the CI-104JU delivers stable, high-speed data transmission and flexible configuration options through software-based setup, eliminating the need for manual jumper settings. Its compact AT form factor and RJ45 connectors make it ideal for embedded systems, industrial automation, and control applications where space and reliability are critical.
2. Key Features
- Four Independent RS-232 Ports: Provides four fully functional serial communication channels for simultaneous data transmission and reception.
- High-Speed Data Transfer: Supports baud rates from 50 bps up to 921,600 bps, enabling compatibility with a wide range of serial devices and communication requirements.
- TI 16550C UART Chipset: Each port is equipped with a 16-byte FIFO buffer, ensuring efficient data handling, reduced CPU load, and minimized data loss during high-speed communication.
- Software-Based Configuration: No jumpers or DIP switches are required; all port parameters (I/O address, IRQ, etc.) are configured via software utilities, simplifying installation and maintenance.
- Compact AT Form Factor: Designed for embedded and industrial PC systems with limited space, measuring 157 mm x 83 mm, allowing easy integration into standard AT slots.
- RJ45 Connectors: Utilizes RJ45 connectors for serial port connections, offering a compact and secure interface that simplifies cabling and reduces clutter.
- Space-Saving Design: Optimized for embedded systems and compact industrial PCs where board space is at a premium.
- Wide Baud Rate Range: Supports both low-speed and high-speed serial communication, making it suitable for diverse industrial applications.
- Reliable Industrial-Grade Construction: Engineered for continuous operation in demanding environments, ensuring long-term stability and durability.
- Moxa Software Support: Compatible with Moxa’s configuration and diagnostic tools for easy setup, monitoring, and troubleshooting.
3. Technical Specifications
- Model: CI-104JU
- Bus Interface: AT (ISA) bus
- Number of Ports: 4 independent RS-232 serial ports
- UART Type: Texas Instruments 16550C UART with 16-byte FIFO per port
- Baud Rate: 50 bps to 921,600 bps (configurable per port)
- Connector Type: RJ45 (8-pin modular jack)
- Configuration: Software-configurable (no jumpers required)
- Dimensions: 157 mm (L) × 83 mm (W)
- Weight: Approx. 100–150 g (typical for AT card of this size; manufacturer specification may vary)
- Signal Lines (RS-232): TxD, RxD, RTS, CTS, DTR, DSR, DCD, GND
- Operating Voltage: 5 V DC (supplied via AT bus)
- Power Consumption: Low power design (typically < 1 W)
- Operating Temperature: 0°C to 55°C (standard operating range)
- Storage Temperature: -20°C to 85°C
- Humidity: 5% to 95% RH, non-condensing
- Material: Multi-layer PCB with industrial-grade components
- Form Factor: Full-height AT card, compact length for embedded chassis
4. Functionality
The CI-104JU functions as a multi-port serial communication interface card, enabling PCs and embedded systems to connect to multiple RS-232 devices simultaneously. Each of the four ports operates independently, allowing concurrent communication with different serial peripherals such as PLCs, sensors, barcode scanners, modems, or industrial controllers.
How It Works:
The card interfaces with the host system via the AT (ISA) bus. Each port is managed by a TI 16550C UART, which buffers data in a 16-byte FIFO to ensure smooth data flow even under high-speed or high-load conditions. The software-configurable interface allows users to assign I/O addresses and IRQs without physically adjusting jumpers, simplifying system integration and reconfiguration.
Use Cases and Applications:
- Industrial automation and process control systems
- Embedded computing platforms requiring multiple serial interfaces
- Data acquisition and monitoring systems
- Point-of-sale (POS) terminals and kiosks
- Communication gateways and protocol converters
- Legacy equipment integration in modern computing environments
- Laboratory instrumentation and test equipment connectivity
Compatibility:
- Compatible with standard AT (ISA) bus architecture
- Supports major operating systems with appropriate drivers (e.g., DOS, Windows, Linux, depending on Moxa driver availability)
- Works with Moxa’s serial communication utilities for configuration and diagnostics
5. Components & Accessories
Included Items:
- CI-104JU 4-Port RS232 AT Card
- Quick installation guide or user manual (digital or printed)
- Software utilities and drivers (typically provided via download or CD-ROM)
Optional Accessories:
- RJ45-to-DB9 or RJ45-to-DB25 serial adapter cables (for connecting to standard serial devices)
- External serial breakout boxes for multi-port management
- Mounting brackets or retention clips for embedded chassis installation
Connectors:
- 4 × RJ45 connectors for RS-232 ports
- AT bus edge connector for system interface
6. Installation & Setup
System Requirements:
- AT (ISA) bus slot available on host system
- Compatible operating system with Moxa driver support
- Administrative privileges for software installation
Installation Steps:
1. Power off the host system and remove the chassis cover.
2. Insert the CI-104JU card into an available AT (ISA) slot, ensuring a secure connection.
3. Secure the card with a mounting screw or bracket.
4. Power on the system and install the Moxa configuration software or drivers.
5. Use the software utility to configure port parameters (I/O address, IRQ, baud rate, etc.).
6. Connect serial devices to the RJ45 ports using appropriate adapter cables.
7. Verify communication using diagnostic tools or terminal software.
Mounting Options:
- Standard AT slot mounting
- Suitable for embedded chassis or industrial PC enclosures
Configuration:
- Fully software-configurable; no jumpers or DIP switches required
- Supports dynamic reassignment of resources for flexible system integration
7. Performance & Capabilities
Speed:
- Supports baud rates from 50 bps to 921,600 bps, allowing both low-speed and high-speed serial communication.
Capacity:
- Four independent RS-232 channels, each capable of full-duplex communication.
Efficiency:
- TI 16550C UART with 16-byte FIFO buffers reduces CPU overhead and prevents data loss during high-speed transfers.
- Software configuration streamlines setup and minimizes downtime.
Reliability:
- Industrial-grade design ensures stable operation in continuous-use environments.
- RJ45 connectors provide secure, vibration-resistant connections.
Limitations:
- RS-232 only (no RS-422/485 support)
- AT (ISA) bus interface limits compatibility with modern PCI/PCIe systems unless used with legacy or embedded platforms.
Performance Highlights:
- Stable communication at up to 921.6 kbps per port
- Low latency and minimal data error rate due to FIFO buffering
- Consistent throughput across all four ports under simultaneous operation
8. Standards & Compliance
Electrical and Interface Standards:
- Complies with EIA/TIA RS-232 standard for serial communication
- AT (ISA) bus interface compliant with industry specifications
Certifications and Compliance:
- CE (Conformité Européenne) compliant (typical for Moxa industrial products)
- FCC Class A compliance for electromagnetic emissions (industrial environment)
- RoHS compliant (Restriction of Hazardous Substances)
- Manufactured under ISO 9001 quality management standards
Industry Standards Supported:
- RS-232 asynchronous serial communication standard
- UART 16550C compatibility for software and driver interoperability
9. Additional Information
Warranty:
- Standard Moxa warranty (typically 3 years for interface cards; confirm with manufacturer)
Technical Support:
- Comprehensive technical documentation and driver downloads available from Moxa’s official website
- Global technical support network for configuration, troubleshooting, and integration assistance
Maintenance:
- No moving parts; minimal maintenance required
- Periodic inspection of connectors and cables recommended for optimal performance
Firmware & Software Updates:
- Driver and utility updates available through Moxa’s support portal
- Backward compatibility maintained with previous driver versions
Service Life & Reliability:
- Designed for long-term industrial operation with high mean time between failures (MTBF)
- Stable performance under continuous operation in embedded and automation systems
Environmental Considerations:
- RoHS-compliant materials ensure environmentally responsible manufacturing
- Low power consumption contributes to energy-efficient system design
### Summary
The Moxa CI-104JU 4-Port RS232 AT Card is a compact, high-performance communication interface designed for industrial and embedded applications requiring multiple serial connections. Featuring four independent RS-232 ports, each powered by a TI 16550C UART with 16-byte FIFO buffers, it supports data rates up to 921.6 kbps while maintaining reliable, low-latency communication. Its software-configurable design eliminates the need for hardware jumpers, simplifying installation and system integration. With a compact 157 × 83 mm AT form factor and RJ45 connectors, the CI-104JU is optimized for space-constrained embedded systems and industrial PCs.
Engineered to meet industrial standards for reliability, compliance, and performance, the CI-104JU provides a robust solution for connecting legacy serial devices to modern computing platforms. It is ideal for automation, control, data acquisition, and communication gateway applications where dependable serial connectivity is essential.
In essence, the Moxa CI-104JU delivers industrial-grade reliability, flexible configuration, and high-speed serial performance in a compact AT card form factor—making it a trusted choice for engineers and system integrators seeking efficient multi-port RS-232 communication solutions.
No manuals/catalogs available.
