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- Four Independent Serial Ports: Each board provides four RS-422/485 serial ports, supporting full-duplex and half-duplex communication modes.
- Universal PCI Compatibility: Supports both 3.3 V and 5 V PCI and PCI-X slots, ensuring broad compatibility with modern and legacy systems.
- High-Speed Data Transmission: Supports baud rates from 50 bps up to 921.6 Kbps, enabling fast and reliable data exchange.
- Moxa Turbo Serial Engine™: Integrated MU860 communication controller (16C550C compatible) with on-chip ADDC® (Automatic Data Direction Control) for precise RS-485 communication timing.
- ADDC® Technology: Automatically manages data direction control for RS-485 communication, simplifying configuration and improving reliability.
- Enhanced FIFO Buffer: 128-byte FIFO per port for efficient data handling and reduced CPU load.
- Surge and ESD Protection: 15 kV ESD protection on all signal lines; CP-134U-I adds 2 kV optical isolation for additional safety.
- Multi-Protocol Support: Ports 1 and 2 can be configured for RS-232, RS-422, or RS-485 operation.
- Wide OS Driver Support: Compatible with Windows (2000, XP, 2003, Vista, CE 5.0, XP Embedded), Linux (2.4/2.6), FreeBSD, QNX, DOS, and Unix systems.
- Long-Distance Communication: RS-485 multidrop capability supports up to 31 devices over distances up to 1.2 km.
- Industrial-Grade Reliability: Designed for continuous operation in industrial environments with wide temperature and humidity tolerance.
- Comprehensive Regulatory Compliance: Meets FCC, CE, and IEC industrial standards for electromagnetic compatibility and safety.
- Universal PCI Compatibility: Supports both 3.3 V and 5 V PCI and PCI-X slots, ensuring broad compatibility with modern and legacy systems.
- High-Speed Data Transmission: Supports baud rates from 50 bps up to 921.6 Kbps, enabling fast and reliable data exchange.
- Moxa Turbo Serial Engine™: Integrated MU860 communication controller (16C550C compatible) with on-chip ADDC® (Automatic Data Direction Control) for precise RS-485 communication timing.
- ADDC® Technology: Automatically manages data direction control for RS-485 communication, simplifying configuration and improving reliability.
- Enhanced FIFO Buffer: 128-byte FIFO per port for efficient data handling and reduced CPU load.
- Surge and ESD Protection: 15 kV ESD protection on all signal lines; CP-134U-I adds 2 kV optical isolation for additional safety.
- Multi-Protocol Support: Ports 1 and 2 can be configured for RS-232, RS-422, or RS-485 operation.
- Wide OS Driver Support: Compatible with Windows (2000, XP, 2003, Vista, CE 5.0, XP Embedded), Linux (2.4/2.6), FreeBSD, QNX, DOS, and Unix systems.
- Long-Distance Communication: RS-485 multidrop capability supports up to 31 devices over distances up to 1.2 km.
- Industrial-Grade Reliability: Designed for continuous operation in industrial environments with wide temperature and humidity tolerance.
- Comprehensive Regulatory Compliance: Meets FCC, CE, and IEC industrial standards for electromagnetic compatibility and safety.
Comprehensive Product Summary: Moxa CP-134U / CP-134U-I Universal PCI 4-Port RS-422/485 Serial Board
### 1. Product Overview
Product Name: CP-134U / CP-134U-I
Model Series: CP-134U Series – Universal PCI 4-Port RS-422/485 Smart Serial Boards
Article Number: CP-134U
Manufacturer: Moxa Inc.
Product Category: Industrial Serial Communication Interface / Serial Expansion Board
Product Type: Universal PCI Serial Communication Board with 4 RS-422/485 Ports
Intended Use: Industrial automation, data acquisition, and multi-point serial communication applications requiring high-speed, long-distance, and reliable data transmission.
The Moxa CP-134U and CP-134U-I are advanced 4-port Universal PCI serial boards designed for industrial-grade communication systems. They provide robust, high-performance serial connectivity for RS-422 and RS-485 interfaces, with optional RS-232 support on specific ports. The boards are engineered for PC-based data acquisition and control systems that demand reliable, long-distance, and multi-drop serial communication. The CP-134U-I variant includes 2 kV optical isolation for enhanced protection in electrically noisy environments.
### 2. Key Features
- Four Independent Serial Ports: Each board provides four RS-422/485 serial ports, supporting full-duplex and half-duplex communication modes.
- Universal PCI Compatibility: Supports both 3.3 V and 5 V PCI and PCI-X slots, ensuring broad compatibility with modern and legacy systems.
- High-Speed Data Transmission: Supports baud rates from 50 bps up to 921.6 Kbps, enabling fast and reliable data exchange.
- Moxa Turbo Serial Engine™: Integrated MU860 communication controller (16C550C compatible) with on-chip ADDC® (Automatic Data Direction Control) for precise RS-485 communication timing.
- ADDC® Technology: Automatically manages data direction control for RS-485 communication, simplifying configuration and improving reliability.
- Enhanced FIFO Buffer: 128-byte FIFO per port for efficient data handling and reduced CPU load.
- Surge and ESD Protection: 15 kV ESD protection on all signal lines; CP-134U-I adds 2 kV optical isolation for additional safety.
- Multi-Protocol Support: Ports 1 and 2 can be configured for RS-232, RS-422, or RS-485 operation.
- Wide OS Driver Support: Compatible with Windows (2000, XP, 2003, Vista, CE 5.0, XP Embedded), Linux (2.4/2.6), FreeBSD, QNX, DOS, and Unix systems.
- Long-Distance Communication: RS-485 multidrop capability supports up to 31 devices over distances up to 1.2 km.
- Industrial-Grade Reliability: Designed for continuous operation in industrial environments with wide temperature and humidity tolerance.
- Comprehensive Regulatory Compliance: Meets FCC, CE, and IEC industrial standards for electromagnetic compatibility and safety.
### 3. Technical Specifications
Hardware Controller: MU860 (16C550C compatible)
Bus Interface: 32-bit Universal PCI (3.3 V / 5 V, PCI-X compatible)
Number of Ports: 4 independent serial ports
Connector Type: DB44 female connector on board
Cable Options:
- DB44 male to 4 × DB9 male (50 cm, model CBL-M44M9x4-50)
- DB44 male to 4 × DB25 male (50 cm, model CBL-M44M25x4-50)
Serial Standards Supported: RS-232, RS-422, RS-485 (2-wire and 4-wire modes)
Baud Rate Range: 50 bps to 921.6 Kbps
FIFO Buffer: 128 bytes per port
Flow Control: Hardware (RTS/CTS) and Software (XON/XOFF)
Data Bits: 5, 6, 7, 8
Stop Bits: 1, 1.5, 2
Parity Options: None, Even, Odd, Space, Mark
I/O Address & IRQ: Assigned automatically by BIOS
Electrical Protection:
- ESD Protection: 15 kV (on-board)
- Optical Isolation: 2 kV (CP-134U-I only)
Power Requirements:
- CP-134U: 180 mA @ +5 V
- CP-134U-I: 850 mA @ +5 V
Physical Dimensions:
- CP-134U: 82.5 × 120 mm (3.24 × 4.72 in)
- CP-134U-I: 115 × 120 mm (4.52 × 4.72 in)
Weight: Approximately 150–200 g (board only, depending on model)
Material: Multi-layer PCB with industrial-grade components
Environmental Limits:
- Operating Temperature: 0 to 55°C (32 to 131°F)
- Storage Temperature: -20 to 85°C (-4 to 185°F)
- Humidity: 5% to 95% RH (non-condensing)
### 4. Functionality
The CP-134U series boards function as intelligent serial communication interfaces that expand a PC’s capability to connect with multiple serial devices simultaneously. Each of the four ports can be independently configured for RS-422 or RS-485 operation, with ports 1 and 2 optionally supporting RS-232.
How It Works:
The board installs into a standard PCI or PCI-X slot. Once installed, it provides four serial communication channels accessible through the DB44 connector and breakout cable. The integrated Moxa Turbo Serial Engine™ manages data flow and timing, while ADDC® automatically controls the RS-485 data direction, eliminating the need for manual RTS signal management.
Use Cases and Applications:
- Industrial automation and control systems
- SCADA and data acquisition networks
- Building management systems (BMS)
- Factory equipment monitoring
- Serial device networking (PLC, sensors, meters)
- Embedded system integration
- Long-distance RS-485 communication networks
Compatibility:
The CP-134U series supports a wide range of operating systems and is compatible with both 32-bit and 64-bit architectures. It integrates seamlessly with Moxa’s driver suite, providing COM port emulation for Windows and TTY device support for Linux/Unix environments.
### 5. Components & Accessories
Included in Package:
- CP-134U or CP-134U-I PCI board
- One DB44-to-4×DB9 or DB44-to-4×DB25 cable (50 cm)
- Documentation and Software CD (drivers, manuals)
- Quick Installation Guide (printed)
- Warranty Card
Optional Accessories (sold separately):
- CBL-M44M9x4-50: DB44 male to 4 × DB9 male, 50 cm cable
- CBL-M44M25x4-50: DB44 male to 4 × DB25 male, 50 cm cable
Connector Pin Assignments:
Each cable provides pin mappings for RS-232, RS-422, RS-485 (2-wire and 4-wire) modes, ensuring flexible connectivity to various serial devices.
### 6. Installation & Setup
System Requirements:
- Available PCI or PCI-X slot (3.3 V or 5 V)
- Supported operating system (Windows, Linux, Unix, etc.)
- Administrative privileges for driver installation
Installation Steps:
1. Power off the host PC and insert the CP-134U or CP-134U-I board into an available PCI slot.
2. Secure the board using the mounting bracket.
3. Connect the DB44 breakout cable to the board’s connector.
4. Attach serial devices to the DB9 or DB25 connectors as required.
5. Power on the system and install the appropriate Moxa driver from the included CD or Moxa website.
6. Configure port parameters (baud rate, parity, data bits, etc.) via the operating system’s device manager or Moxa configuration utility.
Mounting Options:
Standard PCI bracket mounting; compatible with desktop and industrial PC chassis.
Configuration:
Ports can be configured for RS-422 or RS-485 operation via software. ADDC® automatically manages RS-485 data direction, simplifying setup.
### 7. Performance & Capabilities
Data Throughput:
- Up to 700 Kbps sustained throughput per port
- Maximum baud rate: 921.6 Kbps
Communication Distance:
- RS-485: Up to 1.2 km (4000 ft)
- RS-422: Up to 1.2 km (4000 ft)
Device Connectivity:
- RS-485 multidrop supports up to 31 devices per port
Efficiency Features:
- 128-byte FIFO reduces CPU overhead
- Hardware and software flow control ensures data integrity
- ADDC® technology eliminates manual RTS control for RS-485
Limitations:
- Optical isolation available only on CP-134U-I model
- Operating temperature limited to 55°C (not suitable for extreme environments without additional cooling)
Reliability:
- Industrial-grade design ensures stable operation under continuous load
- ESD and isolation protection prevent damage from electrical surges and ground loops
### 8. Standards & Compliance
Regulatory Approvals:
- EMC Compliance: EN55022, EN55024
- Harmonic and Flicker Standards: EN61000-3-2, EN61000-3-3
- Immunity Standards: IEC61000-4-2 (ESD), IEC61000-4-3 (Radiated Immunity), IEC61000-4-4 (EFT), IEC61000-4-5 (Surge), IEC61000-4-6 (Conducted Immunity), IEC61000-4-8 (Magnetic Field), IEC61000-4-11 (Voltage Dips/Interruptions)
- FCC Compliance: Part 15 Class B (for home and industrial environments)
Industry Standards:
- PCI Local Bus Specification Revision 2.3 compliant
- RS-232, RS-422, RS-485 serial communication standards compliant
- CE and FCC certified for electromagnetic compatibility
Environmental Compliance:
Designed and manufactured in accordance with RoHS directives (lead-free components).
### 9. Additional Information
Warranty:
- Duration: 5 years standard manufacturer warranty
- Coverage: Hardware defects and manufacturing faults
- Support: Technical support available via Moxa’s global service network and online resources
- Warranty Details: Refer to [www.moxa.com/warranty](https://www.moxa.com/warranty)
Maintenance:
- Periodic inspection of connectors and cables recommended
- Firmware and driver updates available from Moxa’s website
- No user-serviceable internal components; repairs should be performed by authorized service centers
Software & Driver Updates:
- Regular driver updates for Windows, Linux, and embedded systems
- Configuration utilities and diagnostic tools provided on CD and online
Documentation & Resources:
- User Manual (PDF)
- Quick Installation Guide
- Driver Installation Guide
- Technical Notes and FAQs available on Moxa’s support portal
Ordering Information:
- CP-134U: 4-port RS-422/485 Universal PCI serial board (includes DB9 or DB25 cable)
- CP-134U-I: 4-port RS-422/485 Universal PCI serial board with 2 kV isolation (includes DB9 or DB25 cable)
Optional Cables:
- CBL-M44M9x4-50: DB44 male to 4 × DB9 male, 50 cm
- CBL-M44M25x4-50: DB44 male to 4 × DB25 male, 50 cm
### Summary
The Moxa CP-134U and CP-134U-I are high-performance, industrial-grade Universal PCI serial boards designed to expand a PC’s serial communication capabilities. With four independent RS-422/485 ports, advanced ADDC® technology, and robust protection features, these boards deliver reliable, high-speed data communication for industrial automation and control systems. The CP-134U-I variant adds 2 kV optical isolation for enhanced safety in electrically harsh environments. Both models support a wide range of operating systems, ensuring seamless integration into diverse industrial and embedded applications.
Their combination of performance, flexibility, and durability makes the CP-134U series a trusted solution for engineers and system integrators seeking dependable serial connectivity in mission-critical environments.
### 1. Product Overview
Product Name: CP-134U / CP-134U-I
Model Series: CP-134U Series – Universal PCI 4-Port RS-422/485 Smart Serial Boards
Article Number: CP-134U
Manufacturer: Moxa Inc.
Product Category: Industrial Serial Communication Interface / Serial Expansion Board
Product Type: Universal PCI Serial Communication Board with 4 RS-422/485 Ports
Intended Use: Industrial automation, data acquisition, and multi-point serial communication applications requiring high-speed, long-distance, and reliable data transmission.
The Moxa CP-134U and CP-134U-I are advanced 4-port Universal PCI serial boards designed for industrial-grade communication systems. They provide robust, high-performance serial connectivity for RS-422 and RS-485 interfaces, with optional RS-232 support on specific ports. The boards are engineered for PC-based data acquisition and control systems that demand reliable, long-distance, and multi-drop serial communication. The CP-134U-I variant includes 2 kV optical isolation for enhanced protection in electrically noisy environments.
### 2. Key Features
- Four Independent Serial Ports: Each board provides four RS-422/485 serial ports, supporting full-duplex and half-duplex communication modes.
- Universal PCI Compatibility: Supports both 3.3 V and 5 V PCI and PCI-X slots, ensuring broad compatibility with modern and legacy systems.
- High-Speed Data Transmission: Supports baud rates from 50 bps up to 921.6 Kbps, enabling fast and reliable data exchange.
- Moxa Turbo Serial Engine™: Integrated MU860 communication controller (16C550C compatible) with on-chip ADDC® (Automatic Data Direction Control) for precise RS-485 communication timing.
- ADDC® Technology: Automatically manages data direction control for RS-485 communication, simplifying configuration and improving reliability.
- Enhanced FIFO Buffer: 128-byte FIFO per port for efficient data handling and reduced CPU load.
- Surge and ESD Protection: 15 kV ESD protection on all signal lines; CP-134U-I adds 2 kV optical isolation for additional safety.
- Multi-Protocol Support: Ports 1 and 2 can be configured for RS-232, RS-422, or RS-485 operation.
- Wide OS Driver Support: Compatible with Windows (2000, XP, 2003, Vista, CE 5.0, XP Embedded), Linux (2.4/2.6), FreeBSD, QNX, DOS, and Unix systems.
- Long-Distance Communication: RS-485 multidrop capability supports up to 31 devices over distances up to 1.2 km.
- Industrial-Grade Reliability: Designed for continuous operation in industrial environments with wide temperature and humidity tolerance.
- Comprehensive Regulatory Compliance: Meets FCC, CE, and IEC industrial standards for electromagnetic compatibility and safety.
### 3. Technical Specifications
Hardware Controller: MU860 (16C550C compatible)
Bus Interface: 32-bit Universal PCI (3.3 V / 5 V, PCI-X compatible)
Number of Ports: 4 independent serial ports
Connector Type: DB44 female connector on board
Cable Options:
- DB44 male to 4 × DB9 male (50 cm, model CBL-M44M9x4-50)
- DB44 male to 4 × DB25 male (50 cm, model CBL-M44M25x4-50)
Serial Standards Supported: RS-232, RS-422, RS-485 (2-wire and 4-wire modes)
Baud Rate Range: 50 bps to 921.6 Kbps
FIFO Buffer: 128 bytes per port
Flow Control: Hardware (RTS/CTS) and Software (XON/XOFF)
Data Bits: 5, 6, 7, 8
Stop Bits: 1, 1.5, 2
Parity Options: None, Even, Odd, Space, Mark
I/O Address & IRQ: Assigned automatically by BIOS
Electrical Protection:
- ESD Protection: 15 kV (on-board)
- Optical Isolation: 2 kV (CP-134U-I only)
Power Requirements:
- CP-134U: 180 mA @ +5 V
- CP-134U-I: 850 mA @ +5 V
Physical Dimensions:
- CP-134U: 82.5 × 120 mm (3.24 × 4.72 in)
- CP-134U-I: 115 × 120 mm (4.52 × 4.72 in)
Weight: Approximately 150–200 g (board only, depending on model)
Material: Multi-layer PCB with industrial-grade components
Environmental Limits:
- Operating Temperature: 0 to 55°C (32 to 131°F)
- Storage Temperature: -20 to 85°C (-4 to 185°F)
- Humidity: 5% to 95% RH (non-condensing)
### 4. Functionality
The CP-134U series boards function as intelligent serial communication interfaces that expand a PC’s capability to connect with multiple serial devices simultaneously. Each of the four ports can be independently configured for RS-422 or RS-485 operation, with ports 1 and 2 optionally supporting RS-232.
How It Works:
The board installs into a standard PCI or PCI-X slot. Once installed, it provides four serial communication channels accessible through the DB44 connector and breakout cable. The integrated Moxa Turbo Serial Engine™ manages data flow and timing, while ADDC® automatically controls the RS-485 data direction, eliminating the need for manual RTS signal management.
Use Cases and Applications:
- Industrial automation and control systems
- SCADA and data acquisition networks
- Building management systems (BMS)
- Factory equipment monitoring
- Serial device networking (PLC, sensors, meters)
- Embedded system integration
- Long-distance RS-485 communication networks
Compatibility:
The CP-134U series supports a wide range of operating systems and is compatible with both 32-bit and 64-bit architectures. It integrates seamlessly with Moxa’s driver suite, providing COM port emulation for Windows and TTY device support for Linux/Unix environments.
### 5. Components & Accessories
Included in Package:
- CP-134U or CP-134U-I PCI board
- One DB44-to-4×DB9 or DB44-to-4×DB25 cable (50 cm)
- Documentation and Software CD (drivers, manuals)
- Quick Installation Guide (printed)
- Warranty Card
Optional Accessories (sold separately):
- CBL-M44M9x4-50: DB44 male to 4 × DB9 male, 50 cm cable
- CBL-M44M25x4-50: DB44 male to 4 × DB25 male, 50 cm cable
Connector Pin Assignments:
Each cable provides pin mappings for RS-232, RS-422, RS-485 (2-wire and 4-wire) modes, ensuring flexible connectivity to various serial devices.
### 6. Installation & Setup
System Requirements:
- Available PCI or PCI-X slot (3.3 V or 5 V)
- Supported operating system (Windows, Linux, Unix, etc.)
- Administrative privileges for driver installation
Installation Steps:
1. Power off the host PC and insert the CP-134U or CP-134U-I board into an available PCI slot.
2. Secure the board using the mounting bracket.
3. Connect the DB44 breakout cable to the board’s connector.
4. Attach serial devices to the DB9 or DB25 connectors as required.
5. Power on the system and install the appropriate Moxa driver from the included CD or Moxa website.
6. Configure port parameters (baud rate, parity, data bits, etc.) via the operating system’s device manager or Moxa configuration utility.
Mounting Options:
Standard PCI bracket mounting; compatible with desktop and industrial PC chassis.
Configuration:
Ports can be configured for RS-422 or RS-485 operation via software. ADDC® automatically manages RS-485 data direction, simplifying setup.
### 7. Performance & Capabilities
Data Throughput:
- Up to 700 Kbps sustained throughput per port
- Maximum baud rate: 921.6 Kbps
Communication Distance:
- RS-485: Up to 1.2 km (4000 ft)
- RS-422: Up to 1.2 km (4000 ft)
Device Connectivity:
- RS-485 multidrop supports up to 31 devices per port
Efficiency Features:
- 128-byte FIFO reduces CPU overhead
- Hardware and software flow control ensures data integrity
- ADDC® technology eliminates manual RTS control for RS-485
Limitations:
- Optical isolation available only on CP-134U-I model
- Operating temperature limited to 55°C (not suitable for extreme environments without additional cooling)
Reliability:
- Industrial-grade design ensures stable operation under continuous load
- ESD and isolation protection prevent damage from electrical surges and ground loops
### 8. Standards & Compliance
Regulatory Approvals:
- EMC Compliance: EN55022, EN55024
- Harmonic and Flicker Standards: EN61000-3-2, EN61000-3-3
- Immunity Standards: IEC61000-4-2 (ESD), IEC61000-4-3 (Radiated Immunity), IEC61000-4-4 (EFT), IEC61000-4-5 (Surge), IEC61000-4-6 (Conducted Immunity), IEC61000-4-8 (Magnetic Field), IEC61000-4-11 (Voltage Dips/Interruptions)
- FCC Compliance: Part 15 Class B (for home and industrial environments)
Industry Standards:
- PCI Local Bus Specification Revision 2.3 compliant
- RS-232, RS-422, RS-485 serial communication standards compliant
- CE and FCC certified for electromagnetic compatibility
Environmental Compliance:
Designed and manufactured in accordance with RoHS directives (lead-free components).
### 9. Additional Information
Warranty:
- Duration: 5 years standard manufacturer warranty
- Coverage: Hardware defects and manufacturing faults
- Support: Technical support available via Moxa’s global service network and online resources
- Warranty Details: Refer to [www.moxa.com/warranty](https://www.moxa.com/warranty)
Maintenance:
- Periodic inspection of connectors and cables recommended
- Firmware and driver updates available from Moxa’s website
- No user-serviceable internal components; repairs should be performed by authorized service centers
Software & Driver Updates:
- Regular driver updates for Windows, Linux, and embedded systems
- Configuration utilities and diagnostic tools provided on CD and online
Documentation & Resources:
- User Manual (PDF)
- Quick Installation Guide
- Driver Installation Guide
- Technical Notes and FAQs available on Moxa’s support portal
Ordering Information:
- CP-134U: 4-port RS-422/485 Universal PCI serial board (includes DB9 or DB25 cable)
- CP-134U-I: 4-port RS-422/485 Universal PCI serial board with 2 kV isolation (includes DB9 or DB25 cable)
Optional Cables:
- CBL-M44M9x4-50: DB44 male to 4 × DB9 male, 50 cm
- CBL-M44M25x4-50: DB44 male to 4 × DB25 male, 50 cm
### Summary
The Moxa CP-134U and CP-134U-I are high-performance, industrial-grade Universal PCI serial boards designed to expand a PC’s serial communication capabilities. With four independent RS-422/485 ports, advanced ADDC® technology, and robust protection features, these boards deliver reliable, high-speed data communication for industrial automation and control systems. The CP-134U-I variant adds 2 kV optical isolation for enhanced safety in electrically harsh environments. Both models support a wide range of operating systems, ensuring seamless integration into diverse industrial and embedded applications.
Their combination of performance, flexibility, and durability makes the CP-134U series a trusted solution for engineers and system integrators seeking dependable serial connectivity in mission-critical environments.
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