1. Product Overview
Product Name: PCIe 2-Port Isolated RS422/485 Card
Model: COM-8562
Series: COM Series Industrial Communication Interfaces
Article Number: COM-8562
Manufacturer: JS Automation

The COM-8562 is a high-performance industrial communication interface card designed for systems requiring robust, isolated serial connectivity over RS422 and RS485 standards. Developed by JS Automation, the card integrates two independent, optically isolated serial ports on a single PCI Express (PCIe) interface, providing reliable data transmission in electrically noisy environments. It is engineered for industrial automation, control systems, and embedded computing applications where signal integrity, isolation, and multi-port communication are critical.

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2. Key Features
- Dual-Port Serial Interface: Two independent RS422/RS485 communication ports for simultaneous multi-channel data exchange.
- PCI Express Interface: Fully compliant with PCI Express (PCIe) bus architecture, ensuring high-speed data throughput and compatibility with modern PC-based systems.
- Electrical Isolation: Channel-to-channel isolation rated at 1 kVDC, protecting connected devices and host systems from ground loops, surges, and electrical interference.
- High-Speed Communication: Supports baud rates up to 921.6 kBd, suitable for demanding industrial communication protocols.
- FIFO Buffering: Each UART channel features a 128-byte FIFO buffer based on the industry-standard 16550 UART architecture, minimizing CPU load and ensuring smooth data flow.
- Compact Design: Board dimensions of 112 mm x 115 mm, optimized for installation in standard PCIe slots.
- Power Supply: Operates from 12 V DC supplied directly through the PCIe bus, eliminating the need for external power sources.
- Connector Configuration: Equipped with a DB25 female D-sub connector on the bracket, with an included breakout cable converting to two DB9 male connectors for easy device interfacing.
- Multi-Board Support: Up to four COM-8562 boards can be installed in a single PC system, expanding the number of available serial ports.
- Industrial Reliability: Designed for continuous operation in industrial environments, offering stable performance under extended temperature and electrical stress conditions.

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3. Technical Specifications
- Bus Interface: PCI Express (PCIe)
- Number of Ports: 2 isolated serial ports
- Communication Standards: RS422 / RS485
- UART Type: 16550-compatible UART with 128-byte FIFO per channel
- Maximum Baud Rate: 921.6 kBd
- Isolation Voltage: 1 kVDC channel-to-channel isolation
- Connector Type:
- On-board: 1 × DB25 female D-sub connector
- Cable: M27032509015, 0.15 m cable, DB25 male to 2 × DB9 male connectors
- Power Supply: 12 V DC from PCIe bus
- Board Dimensions: 112 mm (W) × 115 mm (L)
- Maximum Boards per System: 4
- Weight: (approx.) 100–150 g (typical for PCIe half-length cards; manufacturer specification not explicitly stated)
- Material: Multi-layer PCB with industrial-grade components and gold-plated edge connector for PCIe interface
- Operating Environment: Industrial-grade design suitable for extended temperature and vibration conditions (exact range not specified)

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4. Functionality
The COM-8562 functions as a dual-port serial communication interface card that enables a host PC to communicate with external RS422 or RS485 devices through the PCI Express bus. Each port operates independently, allowing simultaneous data transmission and reception across two isolated channels.

Operational Modes:
- RS422 Mode: Full-duplex differential signaling for point-to-point communication, ideal for high-speed, long-distance data transfer.
- RS485 Mode: Half-duplex or full-duplex multi-drop communication, supporting multiple devices on a shared bus.

Use Cases and Applications:
- Industrial automation and process control systems
- PLC and SCADA communication interfaces
- Data acquisition and monitoring systems
- Embedded control and instrumentation
- Serial device networking and legacy equipment integration
- Machine-to-machine (M2M) communication in manufacturing environments

Compatibility:
- Compatible with standard PCI Express slots (x1, x4, x8, x16)
- Supports major operating systems with appropriate drivers (Windows, Linux, and other industrial OS platforms, depending on manufacturer support)
- Interoperable with a wide range of RS422/RS485 devices such as sensors, controllers, HMIs, and industrial gateways

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5. Components & Accessories
Included Items:
- COM-8562 PCIe 2-Port Isolated RS422/485 Card
- M27032509015 cable (0.15 m length)
- DB25 male connector (to card)
- Two DB9 male connectors (to external devices)
- User documentation and installation guide (digital or printed, depending on packaging)

Optional Accessories (typical for this product class):
- Extended-length DB25-to-DB9 breakout cables
- DIN-rail mounting brackets for cable management
- RS422/RS485 terminal adapters
- Surge protection modules for additional line protection

Connectors and Pinouts:
- DB25 Female (on card): Provides access to both serial channels through a single connector.
- DB9 Male (via cable): Each DB9 connector corresponds to one isolated RS422/RS485 port, simplifying device connection.

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6. Installation & Setup
System Requirements:
- Available PCI Express slot (x1 or higher)
- 12 V DC power supplied via PCIe bus
- Compatible operating system with driver support

Installation Procedure:
1. Power down the host PC and disconnect it from the power source.
2. Insert the COM-8562 card into an available PCIe slot, ensuring a secure connection.
3. Fasten the card bracket to the chassis for mechanical stability.
4. Connect the included DB25-to-DB9 cable to the card’s DB25 female connector.
5. Attach external RS422/RS485 devices to the DB9 connectors.
6. Power on the system and install the appropriate drivers if required.
7. Configure communication parameters (baud rate, parity, stop bits, etc.) through the operating system or application software.

Mounting Options:
- Standard PCIe slot mounting within desktop or industrial PC chassis
- Compatible with rackmount and embedded PC systems supporting PCIe expansion

Configuration:
- Software-configurable communication parameters
- Selectable RS422 or RS485 mode per port (depending on driver or jumper configuration, as supported)
- Supports multi-board configuration (up to 4 cards per system) for expanded port count

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7. Performance & Capabilities
Data Throughput:
- Up to 921.6 kBd per channel, ensuring high-speed serial communication suitable for modern industrial protocols.

Buffering and Flow Control:
- 128-byte FIFO per UART channel reduces CPU overhead and prevents data loss during high-speed transmission.
- Hardware and software flow control supported (RTS/CTS, XON/XOFF, depending on driver implementation).

Isolation and Protection:
- 1 kVDC channel-to-channel isolation ensures electrical separation between ports, protecting against transient voltages and ground potential differences.
- Enhanced reliability in environments with high electromagnetic interference (EMI).

Scalability:
- Supports installation of up to four COM-8562 cards in a single system, providing up to eight isolated serial ports.

Efficiency and Reliability:
- Low power consumption through PCIe bus power supply.
- Industrial-grade components ensure long-term stability and minimal maintenance.

Limitations:
- Maximum baud rate limited to 921.6 kBd (not suitable for ultra-high-speed serial applications beyond this threshold).
- Isolation rating of 1 kVDC may not suffice for extreme high-voltage environments requiring higher isolation levels.

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8. Standards & Compliance
Interface Standards:
- PCI Express (PCIe) compliant
- RS422 and RS485 serial communication standards compliant

Electrical and Safety Compliance:
- Channel-to-channel isolation tested to 1 kVDC
- Designed to meet industrial EMC and ESD protection standards (specific certifications may vary by region)

Industry Standards:
- UART 16550 compatibility ensures interoperability with standard serial communication software and drivers.
- Conforms to industrial-grade design practices for reliability and signal integrity.

Regulatory Compliance (typical for JS Automation products):
- CE marking (Electromagnetic Compatibility and Low Voltage Directive compliance)
- RoHS compliance (Restriction of Hazardous Substances)
- REACH compliance (Registration, Evaluation, Authorization, and Restriction of Chemicals)

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9. Additional Information
Warranty:
- Standard manufacturer warranty (typically 1–2 years, depending on region and distributor policy).

Technical Support:
- JS Automation provides technical documentation, driver downloads, and configuration utilities through its official support channels.
- Email and online support available for installation and troubleshooting assistance.

Maintenance:
- No regular maintenance required beyond standard system care.
- Periodic inspection of connectors and cables recommended to ensure signal integrity.

Firmware and Software Updates:
- Driver and firmware updates available from JS Automation’s website to maintain compatibility with new operating systems and improve performance.

Product Lifecycle and Availability:
- Designed for long-term availability in industrial and embedded markets.
- Backward compatibility with legacy RS422/RS485 devices ensures extended usability.

Environmental Considerations:
- RoHS-compliant materials used in manufacturing.
- Low power consumption contributes to energy-efficient system design.

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Summary
The JS Automation COM-8562 PCIe 2-Port Isolated RS422/485 Card is a robust, high-performance communication interface designed for industrial and embedded applications requiring reliable, isolated serial connectivity. With dual independent ports, 1 kVDC isolation, 128-byte FIFO buffering, and support for baud rates up to 921.6 kBd, it delivers stable and efficient data transmission across a wide range of industrial environments. Its PCIe interface ensures compatibility with modern computing platforms, while the included DB25-to-DB9 cable simplifies integration with existing serial devices.

Engineered for scalability, up to four COM-8562 cards can be installed in a single system, providing up to eight isolated serial channels. The card’s industrial-grade design, compliance with RS422/RS485 standards, and adherence to CE and RoHS directives make it a dependable choice for automation, control, and data acquisition systems.

In summary, the COM-8562 combines electrical isolation, high-speed performance, and flexible connectivity in a compact PCIe form factor—offering a reliable, future-proof solution for industrial serial communication applications.