Comprehensive Product Summary: SUNIX IPC‑E2002SI PCI‑Express 2‑Port RS‑422/485 Isolated Serial Card

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### 1. Product Overview

Product Name: PCI‑Express 2‑Port RS‑422/485 Isolated Professional Serial Card
Model: IPC‑E2002SI
Series: SUNIX Industrial Multi‑Port Serial Communication Boards – PCI‑Express RS‑422/485 Series (SI Version)
Article Number: IPC‑E2002SI
Manufacturer: SUNIX Co., Ltd.

The SUNIX IPC‑E2002SI is a professional‑grade, industrial two‑port RS‑422/485 serial communication card designed for PCI‑Express systems. It provides galvanic isolation, surge protection, and advanced automatic communication control technologies for reliable operation in demanding industrial and automation environments. The card is part of SUNIX’s “SI” (Surge & Isolation) series, offering 2.5 kV isolation and 600 W surge protection compliant with IEC 61000‑4‑5 standards.

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### 2. Key Features

- Dual RS‑422/485 Ports: Two independent serial communication ports supporting both RS‑422 full‑duplex and RS‑485 half‑duplex modes.
- PCI‑Express Interface: Compliant with PCI Express Bus Specification Revision 1.0a, utilizing a single‑lane (x1) interface for high‑speed data throughput and compatibility with modern systems.
- Automatic RS‑422/485 Detection and Switching: SUNIX’s proprietary auto‑detect technology automatically identifies and configures the port for RS‑422 or RS‑485 operation without manual jumper settings.
- AHDC/CS™ Technology: Auto Hardware Direction Control/Carrier Sense technology automatically manages RS‑485 signal direction, ensuring precise timing and preventing data collisions on the bus.
- High‑Speed Communication: Supports baud rates from 75 bps up to 921.6 kbps with 64‑byte hardware FIFO buffers per port for efficient data handling.
- Electrical Isolation: 2.5 kV optical isolation between system and serial lines to eliminate ground loops and protect against electrical noise.
- Surge Protection: 600 W peak surge suppression per IEC 61000‑4‑5 standard to protect connected devices from transient voltage spikes.
- ESD Protection: Embedded 15 kV electrostatic discharge protection on all signal lines.
- Software Flow Control: XON/XOFF software‑based flow control supported.
- Unlimited Scalability: Multiple cards can be installed in a single system, limited only by available PCI‑Express slots.
- Compact Design: Supplied with both standard (121 mm) and low‑profile (79.2 mm) brackets for flexible installation in various chassis types.
- Cross‑Platform Driver Support: Compatible with Windows 2000/XP/2003/Vista (32/64‑bit), DOS, Linux 2.4/2.6, and SCO OpenServer 5.06/5.07.
- Industrial Reliability: Designed for continuous operation in 0 °C – 70 °C environments with high humidity tolerance (5 % – 95 % RH).
- Long‑Term Warranty: Backed by a 5‑year manufacturer warranty.

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### 3. Technical Specifications

Interface & Bus:
- PCI Express Bus Specification Revision 1.0a
- 1‑lane (x1) PCI‑Express slot compatible with x1/x4/x8/x16 connectors
- IRQ and I/O address automatically assigned by system BIOS/OS

Ports:
- 2 independent RS‑422/485 serial ports
- Connector: DB‑44 female on card
- Cable: DB‑44 male to dual DB‑9 or DB‑25 male connectors (40 cm or 100 cm length options)

Communication Parameters:
- Baud Rate: 75 bps – 921.6 kbps
- Data Bits: 5, 6, 7, 8
- Stop Bits: 1, 1.5, 2
- Parity: None, Even, Odd, Space, Mark
- Flow Control: XON/XOFF (software)
- FIFO Buffer: 64‑byte hardware FIFO, 16C750‑compatible UART

Electrical Protection:
- ESD: 15 kV embedded protection
- Surge: 600 W peak per IEC 61000‑4‑5
- Isolation: 2.5 kV optical isolation for all signal and power lines

Signal Pinouts:
- RS‑422: TxD+, TxD−, RxD+, RxD−, GND
- 4‑Wire RS‑485: TxD+, TxD−, RxD+, RxD−, GND
- 2‑Wire RS‑485: Data+, Data−, GND

Physical Characteristics:
- Dimensions: 68.5 mm × 110 mm (W × D)
- Brackets: Standard 121 mm and Low‑Profile 79.2 mm included
- Weight: Approx. 100 g (card only)
- Material: Multi‑layer PCB with industrial‑grade components

Environmental Conditions:
- Operating Temperature: 0 °C – 70 °C
- Storage Temperature: −40 °C – 85 °C
- Operating Humidity: 5 % – 95 % RH (non‑condensing)

Regulatory Compliance:
- CE and FCC Class B certified

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### 4. Functionality

The IPC‑E2002SI extends a host system’s serial communication capabilities by providing two isolated RS‑422/485 ports through a PCI‑Express interface. Each port can automatically detect whether the connected device requires RS‑422 full‑duplex or RS‑485 half‑duplex signaling. The card’s AHDC/CS™ hardware logic manages RS‑485 data direction automatically, ensuring that the transmitter is enabled only when the bus is idle and data is ready to send, thus preventing collisions and improving bus efficiency.

Typical Use Cases and Applications:
- Industrial automation and control systems
- SCADA and data acquisition networks
- Building management and HVAC control
- Factory equipment monitoring and PLC communication
- POS (Point‑of‑Sale) terminals and kiosks
- Medical instrumentation and patient data systems
- Transportation and logistics communication systems
- Embedded and OEM industrial PCs requiring reliable serial connectivity

Compatibility:
- Compatible with all major operating systems supporting PCI‑Express serial interfaces.
- Supports integration with RS‑422/485 devices such as sensors, controllers, motor drives, and serial modems.
- Multiple IPC‑E2002SI cards can coexist in one system for large‑scale serial expansion.

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### 5. Components & Accessories

Included in Package:
1. IPC‑E2002SI Serial Card – 2‑port PCI‑Express RS‑422/485 isolated card
2. Connection Cable – DB‑44 male to dual DB‑9 or DB‑25 male connectors (40 cm or 100 cm)
3. Brackets – Standard 121 mm and Low‑Profile 79.2 mm mounting brackets
4. Driver CD – Includes Windows, Linux, and DOS drivers
5. Quick Installation Guide
6. User Manual

Optional Accessories:
- Extended‑length connection cables (custom lengths available)
- DB‑9/DB‑25 adapters for specific equipment interfaces
- DIN‑rail mounting kits for industrial enclosures

Connectors:
- On‑board DB‑44 female connector
- External breakout cable providing two DB‑9 or DB‑25 male connectors

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### 6. Installation & Setup

System Requirements:
- Available PCI‑Express slot (x1 or higher)
- Supported operating system (Windows 2000/XP/2003/Vista 32/64‑bit, Linux 2.4/2.6, DOS, SCO OpenServer 5.06/5.07)

Hardware Installation Steps:
1. Power off the computer and disconnect from mains.
2. Remove the system cover and locate an available PCI‑Express slot.
3. Insert the IPC‑E2002SI card firmly into the slot and secure it with the bracket screw.
4. Replace the system cover and reconnect power.
5. Attach the DB‑44 cable to the card and connect the desired RS‑422/485 devices.

Software Installation:
- Upon system boot, the OS detects the new hardware and prompts for driver installation.
- Insert the SUNIX driver CD and follow the on‑screen instructions.
- For Windows systems, select the appropriate driver folder (e.g., `Windows\2K&XP&2003&Vista_32bit` or `XP&2003_64bit`).
- For Linux, extract and install the driver package using `make install`, then load the module `sunix_matrix`.
- Configure COM port numbers and FIFO settings via Device Manager (Windows) or `/dev/ttySMX*` nodes (Linux).

Configuration Options:
- Enable or disable 64‑byte FIFO buffers.
- Re‑map COM port numbers to avoid conflicts.
- Adjust baud rate, parity, and stop bits per application requirements.

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### 7. Performance & Capabilities

Data Throughput:
- Up to 921.6 kbps per port, full‑duplex (RS‑422) or half‑duplex (RS‑485).

Latency & Efficiency:
- Low‑latency communication enabled by SUNIX Matrix single‑chip UART architecture.
- Hardware‑based flow control and buffering minimize CPU load.

Isolation & Protection:
- 2.5 kV optical isolation prevents ground‑loop interference and protects host systems from voltage differentials.
- 600 W surge suppression ensures resilience against transient spikes from industrial equipment.
- 15 kV ESD protection safeguards against electrostatic discharge events.

Scalability:
- Unlimited number of cards can be installed per system (limited only by available PCI‑Express slots).
- Each card operates independently with system‑assigned IRQ and I/O addresses.

Limitations:
- Maximum baud rate limited to 921.6 kbps per port.
- RS‑485 bus limited to 32 receivers per line as per standard.
- Operating temperature range restricted to 0 °C – 70 °C (not suitable for extreme outdoor environments without enclosure).

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### 8. Standards & Compliance

Electrical and Safety Standards:
- Isolation: 2.5 kV optical isolation for signal and power lines
- Surge Protection: 600 W peak per IEC 61000‑4‑5
- ESD Protection: 15 kV embedded protection

Regulatory Certifications:
- CE (Conformité Européenne) – Electromagnetic compatibility and safety compliance
- FCC Class B – U.S. Federal Communications Commission certification for low‑emission devices

Industry Standards Supported:
- RS‑422 (EIA/TIA‑422) and RS‑485 (EIA/TIA‑485) serial communication standards
- PCI Express Bus Specification Revision 1.0a
- UART 16C750 compatibility

Environmental Compliance:
- Designed for industrial environments with high humidity and electrical noise immunity
- Meets RoHS directives for hazardous substance reduction (manufacturer standard)

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### 9. Additional Information

Warranty:
- 5‑year limited hardware warranty covering manufacturing defects and component failures under normal use.

Technical Support & Updates:
- Email: info@sunix‑ncci.com.tw
- Website: [www.sunix‑ncci.com.tw](http://www.sunix-ncci.com.tw)
- Provides driver updates, product documentation, and technical assistance.

Maintenance:
- No periodic maintenance required; ensure connectors remain clean and secure.
- Avoid exposure to moisture, vibration, or magnetic fields.
- Do not disassemble the card; doing so voids the warranty.

Firmware & Driver Updates:
- SUNIX periodically releases updated drivers for new operating systems and kernel versions.
- Linux drivers available for kernel 2.4.x and 2.6.x; Windows drivers WHQL‑certified for XP/2003 (32/64‑bit).

Troubleshooting Highlights:
- If the card is not detected, verify seating in PCI‑Express slot and available IRQ resources.
- For communication errors, check cable integrity and correct RS‑422/485 wiring.
- FIFO overruns can be mitigated by reducing buffer size or enabling flow control.

Safety Precautions:
- Power off the system before installation.
- Keep away from direct sunlight and high humidity.
- Avoid placing near strong magnetic fields or vibration sources.

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### Summary

The SUNIX IPC‑E2002SI is a robust, industrial‑grade PCI‑Express serial communication card engineered for high‑reliability RS‑422/485 networking. Its combination of 2.5 kV isolation, 600 W surge protection, and 15 kV ESD protection ensures exceptional durability in electrically noisy environments. The card’s auto‑detect RS‑422/485 switching and AHDC/CS™ direction control technologies simplify configuration and guarantee stable, collision‑free data transmission. With support for a wide range of operating systems, flexible installation options, and a 5‑year warranty, the IPC‑E2002SI is ideally suited for industrial automation, data acquisition, and embedded control applications requiring secure, high‑performance serial connectivity.