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- Four Independent RS-232 Ports: Provides four asynchronous serial communication channels for connecting multiple serial devices simultaneously.
- Intelligent Onboard Processing: Equipped with a TMS320C203 RISC processor, enabling intelligent data handling and reducing host CPU load.
- High-Performance UART: Utilizes TI 16550C UARTs with 32-byte FIFO buffers per port for efficient data buffering and reduced interrupt overhead.
- Large Onboard Memory: Integrated 512 kB memory for buffering and intelligent data management, ensuring smooth communication even under heavy data loads.
- Wide Baud Rate Range: Supports data rates from 50 bps up to 921,600 bps, accommodating both legacy and high-speed serial applications.
- Compact PCI Form Factor: Designed as a space-saving PCI card (160 × 95 mm) suitable for embedded systems and compact industrial PCs.
- RJ45 Connectors: Each port uses an RJ45 interface, simplifying cabling and reducing space requirements compared to traditional DB9 connectors.
- Software-Based Configuration: No jumpers or DIP switches required; all port parameters and IRQ/DMA settings are configured via software utilities.
- Industrial Reliability: Built for continuous operation in industrial environments, offering stable performance and long-term durability.
- Compatibility: Fully compatible with standard PCI bus interfaces and supports major operating systems through Moxa’s driver suite.
- Intelligent Onboard Processing: Equipped with a TMS320C203 RISC processor, enabling intelligent data handling and reducing host CPU load.
- High-Performance UART: Utilizes TI 16550C UARTs with 32-byte FIFO buffers per port for efficient data buffering and reduced interrupt overhead.
- Large Onboard Memory: Integrated 512 kB memory for buffering and intelligent data management, ensuring smooth communication even under heavy data loads.
- Wide Baud Rate Range: Supports data rates from 50 bps up to 921,600 bps, accommodating both legacy and high-speed serial applications.
- Compact PCI Form Factor: Designed as a space-saving PCI card (160 × 95 mm) suitable for embedded systems and compact industrial PCs.
- RJ45 Connectors: Each port uses an RJ45 interface, simplifying cabling and reducing space requirements compared to traditional DB9 connectors.
- Software-Based Configuration: No jumpers or DIP switches required; all port parameters and IRQ/DMA settings are configured via software utilities.
- Industrial Reliability: Built for continuous operation in industrial environments, offering stable performance and long-term durability.
- Compatibility: Fully compatible with standard PCI bus interfaces and supports major operating systems through Moxa’s driver suite.
1. Product Overview
Product Name: 4-Port RS232 Intelligent PCI Card
Model: CP-204J
Series: CP Series – Intelligent Multiport Serial Communication Adapters
Article Number: CP-204J
Manufacturer: Moxa Technologies Co., Ltd.
The Moxa CP-204J is a high-performance, intelligent 4-port RS-232 PCI communication card designed for industrial and embedded system applications requiring reliable, high-speed serial connectivity. It integrates advanced UART technology and an onboard RISC processor to offload host CPU resources, ensuring stable and efficient serial data transmission across multiple channels. The card is engineered for space-constrained environments and offers software-based configuration, eliminating the need for manual jumper settings.
2. Key Features
- Four Independent RS-232 Ports: Provides four asynchronous serial communication channels for connecting multiple serial devices simultaneously.
- Intelligent Onboard Processing: Equipped with a TMS320C203 RISC processor, enabling intelligent data handling and reducing host CPU load.
- High-Performance UART: Utilizes TI 16550C UARTs with 32-byte FIFO buffers per port for efficient data buffering and reduced interrupt overhead.
- Large Onboard Memory: Integrated 512 kB memory for buffering and intelligent data management, ensuring smooth communication even under heavy data loads.
- Wide Baud Rate Range: Supports data rates from 50 bps up to 921,600 bps, accommodating both legacy and high-speed serial applications.
- Compact PCI Form Factor: Designed as a space-saving PCI card (160 × 95 mm) suitable for embedded systems and compact industrial PCs.
- RJ45 Connectors: Each port uses an RJ45 interface, simplifying cabling and reducing space requirements compared to traditional DB9 connectors.
- Software-Based Configuration: No jumpers or DIP switches required; all port parameters and IRQ/DMA settings are configured via software utilities.
- Industrial Reliability: Built for continuous operation in industrial environments, offering stable performance and long-term durability.
- Compatibility: Fully compatible with standard PCI bus interfaces and supports major operating systems through Moxa’s driver suite.
3. Technical Specifications
- Model: CP-204J
- Bus Interface: 32-bit PCI, compliant with PCI 2.1 specification
- Number of Ports: 4 independent RS-232 serial ports
- Connector Type: RJ45 (per port)
- UART Type: TI 16550C with 32-byte FIFO
- Processor: TMS320C203 RISC processor (onboard intelligent controller)
- Onboard Memory: 512 kB SRAM for data buffering and intelligent processing
- Baud Rate: 50 bps to 921,600 bps (configurable per port)
- Signal Lines (RS-232): TxD, RxD, RTS, CTS, DTR, DSR, DCD, GND
- Flow Control: Hardware (RTS/CTS), Software (XON/XOFF)
- Dimensions: 160 mm (L) × 95 mm (H)
- Weight: Approx. 150–200 g (typical, depending on configuration)
- Power Requirements: +5 VDC from PCI bus (typical consumption < 500 mA)
- Operating Temperature: 0°C to 55°C (standard); extended temperature versions available upon request
- Storage Temperature: -20°C to 85°C
- Humidity: 5% to 95% RH (non-condensing)
- Indicators: LED activity indicators (optional, depending on configuration)
- Form Factor: Standard PCI card, low-profile compatible with optional bracket
4. Functionality
The Moxa CP-204J functions as an intelligent multiport serial communication adapter that enables PCs and embedded systems to interface with multiple RS-232 devices simultaneously. Each of the four ports operates independently, allowing concurrent data transmission and reception.
The onboard TMS320C203 RISC processor handles low-level serial communication tasks, such as data buffering, flow control, and interrupt management. This offloads the host CPU, improving overall system performance, especially in data-intensive or real-time applications.
Use Cases and Applications:
- Industrial automation systems (PLC, HMI, sensors, controllers)
- Embedded computing platforms requiring multiple serial interfaces
- Point-of-sale (POS) systems and kiosks
- Data acquisition and instrumentation
- Networking and communication gateways
- Serial device servers and console management
Compatibility:
The CP-204J is compatible with standard PCI slots in desktop PCs, industrial computers, and embedded controllers. It supports major operating systems including Windows, Linux, and various real-time operating systems (RTOS) through Moxa’s driver packages.
5. Components & Accessories
Included Items:
- CP-204J PCI card (main unit)
- Quick installation guide
- Driver and utility software (on CD or downloadable from Moxa website)
- RJ45-to-DB9 or RJ45-to-DB25 serial cable adapters (optional, depending on package)
Optional Accessories:
- RJ45-to-DB9M or RJ45-to-DB25M adapter cables for device connectivity
- Low-profile PCI bracket for compact chassis installations
- External surge protection modules for industrial environments
- Serial breakout boxes for multi-device connections
Connectors:
Each of the four ports uses an RJ45 connector, which can be adapted to standard serial connectors via Moxa’s adapter cables. This design minimizes space usage and simplifies cable management in dense installations.
6. Installation & Setup
System Requirements:
- Available PCI slot (32-bit, 33 MHz)
- Compatible operating system with Moxa driver support
- Administrative privileges for driver installation
Installation Steps:
1. Power off the host system and remove the cover.
2. Insert the CP-204J card into an available PCI slot.
3. Secure the card with the mounting screw.
4. Connect serial devices using RJ45-to-DB9/DB25 adapter cables.
5. Power on the system and install the appropriate Moxa driver.
6. Use the provided configuration utility to assign port parameters (baud rate, parity, IRQ, etc.).
Configuration:
All configuration is performed via software—no jumpers or DIP switches are required. The Moxa configuration utility allows users to set communication parameters, enable/disable ports, and monitor port activity.
Mounting Options:
Standard PCI slot mounting; optional low-profile bracket available for compact or embedded chassis.
7. Performance & Capabilities
The CP-204J delivers robust serial communication performance through its intelligent architecture. The onboard RISC processor and large memory buffer ensure minimal data loss and stable throughput even under high-load conditions.
Performance Highlights:
- High-Speed Communication: Supports up to 921.6 kbps per port, suitable for high-speed serial devices.
- Efficient Data Handling: 32-byte FIFO buffers per port reduce interrupt frequency and improve data flow efficiency.
- Intelligent Processing: The TMS320C203 processor manages data flow and buffering autonomously, minimizing host CPU utilization.
- Scalability: Multiple CP-204J cards can be installed in a single system to expand the number of available serial ports.
- Low Latency: Optimized for real-time communication and deterministic response in industrial control systems.
- Reliability: Designed for continuous operation in mission-critical environments, with stable performance across temperature and voltage variations.
Limitations:
- RS-232 only (no RS-422/485 support)
- PCI interface (not PCIe)
- Requires adapter cables for DB9/DB25 connectivity
8. Standards & Compliance
Regulatory Compliance:
- PCI Specification: Compliant with PCI 2.1 standard
- EMC Compliance: CE, FCC Class A (industrial environment)
- RoHS Compliance: Meets RoHS environmental standards for hazardous substance reduction
- Safety: Designed and manufactured under ISO 9001 quality management system
Industry Standards:
- RS-232 (EIA/TIA-232) electrical interface standard
- UART 16550C compatible
- Compatible with standard serial communication protocols and software APIs
Driver and Software Support:
- Windows (various versions)
- Linux kernel modules
- Moxa proprietary utilities for configuration and diagnostics
- Support for standard serial APIs (Win32, POSIX, etc.)
9. Additional Information
Warranty:
Typically covered by Moxa’s 3-year limited hardware warranty, ensuring repair or replacement for manufacturing defects under normal use conditions.
Technical Support:
Moxa provides comprehensive technical support through online resources, documentation, and direct customer service. Drivers, firmware updates, and utilities are available for download from the Moxa website.
Maintenance:
The CP-204J requires minimal maintenance. Periodic inspection of connectors and cables is recommended to ensure reliable operation. Firmware and driver updates should be applied as released to maintain compatibility and performance.
Firmware & Software Updates:
Moxa periodically releases driver and firmware updates to enhance performance, add OS compatibility, and address potential issues. Updates can be applied via Moxa’s configuration utility or downloaded directly from the support portal.
Service Life & Reliability:
Designed for long-term industrial use, the CP-204J features high-quality components and robust PCB design to ensure extended operational life. The absence of mechanical jumpers reduces wear and simplifies configuration management.
Environmental Considerations:
The product is RoHS-compliant and designed for energy-efficient operation. Proper disposal and recycling are recommended according to local electronic waste regulations.
### Summary
The Moxa CP-204J 4-Port RS-232 Intelligent PCI Card is a compact, high-performance serial communication adapter engineered for industrial and embedded applications requiring multiple reliable RS-232 connections. Featuring a TMS320C203 RISC processor, TI 16550C UARTs, and 512 kB onboard memory, it delivers intelligent data handling, high throughput, and reduced CPU load. With software-based configuration, RJ45 connectors, and support for baud rates up to 921.6 kbps, the CP-204J offers flexibility, efficiency, and ease of integration into modern industrial systems.
Its compliance with PCI 2.1, CE/FCC Class A, and RoHS standards ensures compatibility and reliability across diverse environments. Combined with Moxa’s long-term support, driver availability, and robust design, the CP-204J stands as a dependable solution for multiport serial communication in automation, data acquisition, and embedded computing applications.
Product Name: 4-Port RS232 Intelligent PCI Card
Model: CP-204J
Series: CP Series – Intelligent Multiport Serial Communication Adapters
Article Number: CP-204J
Manufacturer: Moxa Technologies Co., Ltd.
The Moxa CP-204J is a high-performance, intelligent 4-port RS-232 PCI communication card designed for industrial and embedded system applications requiring reliable, high-speed serial connectivity. It integrates advanced UART technology and an onboard RISC processor to offload host CPU resources, ensuring stable and efficient serial data transmission across multiple channels. The card is engineered for space-constrained environments and offers software-based configuration, eliminating the need for manual jumper settings.
2. Key Features
- Four Independent RS-232 Ports: Provides four asynchronous serial communication channels for connecting multiple serial devices simultaneously.
- Intelligent Onboard Processing: Equipped with a TMS320C203 RISC processor, enabling intelligent data handling and reducing host CPU load.
- High-Performance UART: Utilizes TI 16550C UARTs with 32-byte FIFO buffers per port for efficient data buffering and reduced interrupt overhead.
- Large Onboard Memory: Integrated 512 kB memory for buffering and intelligent data management, ensuring smooth communication even under heavy data loads.
- Wide Baud Rate Range: Supports data rates from 50 bps up to 921,600 bps, accommodating both legacy and high-speed serial applications.
- Compact PCI Form Factor: Designed as a space-saving PCI card (160 × 95 mm) suitable for embedded systems and compact industrial PCs.
- RJ45 Connectors: Each port uses an RJ45 interface, simplifying cabling and reducing space requirements compared to traditional DB9 connectors.
- Software-Based Configuration: No jumpers or DIP switches required; all port parameters and IRQ/DMA settings are configured via software utilities.
- Industrial Reliability: Built for continuous operation in industrial environments, offering stable performance and long-term durability.
- Compatibility: Fully compatible with standard PCI bus interfaces and supports major operating systems through Moxa’s driver suite.
3. Technical Specifications
- Model: CP-204J
- Bus Interface: 32-bit PCI, compliant with PCI 2.1 specification
- Number of Ports: 4 independent RS-232 serial ports
- Connector Type: RJ45 (per port)
- UART Type: TI 16550C with 32-byte FIFO
- Processor: TMS320C203 RISC processor (onboard intelligent controller)
- Onboard Memory: 512 kB SRAM for data buffering and intelligent processing
- Baud Rate: 50 bps to 921,600 bps (configurable per port)
- Signal Lines (RS-232): TxD, RxD, RTS, CTS, DTR, DSR, DCD, GND
- Flow Control: Hardware (RTS/CTS), Software (XON/XOFF)
- Dimensions: 160 mm (L) × 95 mm (H)
- Weight: Approx. 150–200 g (typical, depending on configuration)
- Power Requirements: +5 VDC from PCI bus (typical consumption < 500 mA)
- Operating Temperature: 0°C to 55°C (standard); extended temperature versions available upon request
- Storage Temperature: -20°C to 85°C
- Humidity: 5% to 95% RH (non-condensing)
- Indicators: LED activity indicators (optional, depending on configuration)
- Form Factor: Standard PCI card, low-profile compatible with optional bracket
4. Functionality
The Moxa CP-204J functions as an intelligent multiport serial communication adapter that enables PCs and embedded systems to interface with multiple RS-232 devices simultaneously. Each of the four ports operates independently, allowing concurrent data transmission and reception.
The onboard TMS320C203 RISC processor handles low-level serial communication tasks, such as data buffering, flow control, and interrupt management. This offloads the host CPU, improving overall system performance, especially in data-intensive or real-time applications.
Use Cases and Applications:
- Industrial automation systems (PLC, HMI, sensors, controllers)
- Embedded computing platforms requiring multiple serial interfaces
- Point-of-sale (POS) systems and kiosks
- Data acquisition and instrumentation
- Networking and communication gateways
- Serial device servers and console management
Compatibility:
The CP-204J is compatible with standard PCI slots in desktop PCs, industrial computers, and embedded controllers. It supports major operating systems including Windows, Linux, and various real-time operating systems (RTOS) through Moxa’s driver packages.
5. Components & Accessories
Included Items:
- CP-204J PCI card (main unit)
- Quick installation guide
- Driver and utility software (on CD or downloadable from Moxa website)
- RJ45-to-DB9 or RJ45-to-DB25 serial cable adapters (optional, depending on package)
Optional Accessories:
- RJ45-to-DB9M or RJ45-to-DB25M adapter cables for device connectivity
- Low-profile PCI bracket for compact chassis installations
- External surge protection modules for industrial environments
- Serial breakout boxes for multi-device connections
Connectors:
Each of the four ports uses an RJ45 connector, which can be adapted to standard serial connectors via Moxa’s adapter cables. This design minimizes space usage and simplifies cable management in dense installations.
6. Installation & Setup
System Requirements:
- Available PCI slot (32-bit, 33 MHz)
- Compatible operating system with Moxa driver support
- Administrative privileges for driver installation
Installation Steps:
1. Power off the host system and remove the cover.
2. Insert the CP-204J card into an available PCI slot.
3. Secure the card with the mounting screw.
4. Connect serial devices using RJ45-to-DB9/DB25 adapter cables.
5. Power on the system and install the appropriate Moxa driver.
6. Use the provided configuration utility to assign port parameters (baud rate, parity, IRQ, etc.).
Configuration:
All configuration is performed via software—no jumpers or DIP switches are required. The Moxa configuration utility allows users to set communication parameters, enable/disable ports, and monitor port activity.
Mounting Options:
Standard PCI slot mounting; optional low-profile bracket available for compact or embedded chassis.
7. Performance & Capabilities
The CP-204J delivers robust serial communication performance through its intelligent architecture. The onboard RISC processor and large memory buffer ensure minimal data loss and stable throughput even under high-load conditions.
Performance Highlights:
- High-Speed Communication: Supports up to 921.6 kbps per port, suitable for high-speed serial devices.
- Efficient Data Handling: 32-byte FIFO buffers per port reduce interrupt frequency and improve data flow efficiency.
- Intelligent Processing: The TMS320C203 processor manages data flow and buffering autonomously, minimizing host CPU utilization.
- Scalability: Multiple CP-204J cards can be installed in a single system to expand the number of available serial ports.
- Low Latency: Optimized for real-time communication and deterministic response in industrial control systems.
- Reliability: Designed for continuous operation in mission-critical environments, with stable performance across temperature and voltage variations.
Limitations:
- RS-232 only (no RS-422/485 support)
- PCI interface (not PCIe)
- Requires adapter cables for DB9/DB25 connectivity
8. Standards & Compliance
Regulatory Compliance:
- PCI Specification: Compliant with PCI 2.1 standard
- EMC Compliance: CE, FCC Class A (industrial environment)
- RoHS Compliance: Meets RoHS environmental standards for hazardous substance reduction
- Safety: Designed and manufactured under ISO 9001 quality management system
Industry Standards:
- RS-232 (EIA/TIA-232) electrical interface standard
- UART 16550C compatible
- Compatible with standard serial communication protocols and software APIs
Driver and Software Support:
- Windows (various versions)
- Linux kernel modules
- Moxa proprietary utilities for configuration and diagnostics
- Support for standard serial APIs (Win32, POSIX, etc.)
9. Additional Information
Warranty:
Typically covered by Moxa’s 3-year limited hardware warranty, ensuring repair or replacement for manufacturing defects under normal use conditions.
Technical Support:
Moxa provides comprehensive technical support through online resources, documentation, and direct customer service. Drivers, firmware updates, and utilities are available for download from the Moxa website.
Maintenance:
The CP-204J requires minimal maintenance. Periodic inspection of connectors and cables is recommended to ensure reliable operation. Firmware and driver updates should be applied as released to maintain compatibility and performance.
Firmware & Software Updates:
Moxa periodically releases driver and firmware updates to enhance performance, add OS compatibility, and address potential issues. Updates can be applied via Moxa’s configuration utility or downloaded directly from the support portal.
Service Life & Reliability:
Designed for long-term industrial use, the CP-204J features high-quality components and robust PCB design to ensure extended operational life. The absence of mechanical jumpers reduces wear and simplifies configuration management.
Environmental Considerations:
The product is RoHS-compliant and designed for energy-efficient operation. Proper disposal and recycling are recommended according to local electronic waste regulations.
### Summary
The Moxa CP-204J 4-Port RS-232 Intelligent PCI Card is a compact, high-performance serial communication adapter engineered for industrial and embedded applications requiring multiple reliable RS-232 connections. Featuring a TMS320C203 RISC processor, TI 16550C UARTs, and 512 kB onboard memory, it delivers intelligent data handling, high throughput, and reduced CPU load. With software-based configuration, RJ45 connectors, and support for baud rates up to 921.6 kbps, the CP-204J offers flexibility, efficiency, and ease of integration into modern industrial systems.
Its compliance with PCI 2.1, CE/FCC Class A, and RoHS standards ensures compatibility and reliability across diverse environments. Combined with Moxa’s long-term support, driver availability, and robust design, the CP-204J stands as a dependable solution for multiport serial communication in automation, data acquisition, and embedded computing applications.
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