Comprehensive Product Summary – Moxa Industio C114HI 4-Port Isolated RS-232/422/485 AT Card

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### 1. Product Overview

Product Name: Industio C114HI
Model: C114HI
Series: Industio C100 Family (C104/C114 Series)
Article Number: C114HI
Manufacturer: Moxa Technologies Co., Ltd.
Manufacturer Contact:
- Tel: +886-2-8665-6373
- Fax: +886-2-8665-6372
- Website: [www.moxa.com](http://www.moxa.com)
- Email: support@moxa.com.tw

Product Description:
The Moxa Industio C114HI is a 4-port isolated RS-232/RS-422/RS-485 serial communication interface board designed for industrial and commercial PC-based systems. Each port can be independently configured for RS-232, RS-422, or RS-485 operation, providing flexible connectivity for a wide range of serial devices. The board supports high-speed asynchronous communication up to 921.6 kbps and features 2000 V isolation protection for RS-422/485 interfaces. It is compatible with ISA/EISA bus architectures and supports multiple operating systems including Windows NT/95/98, DOS, Windows 3.x, Linux, SCO UNIX/XENIX, OS/2, and others.

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### 2. Key Features

- Triple Interface Support: Each of the four ports can be individually configured for RS-232, RS-422, or RS-485 communication.
- High-Speed Operation: Supports baud rates from 50 bps to 921.6 kbps, with selectable normal and high-speed spectra (up to 8× standard rates).
- Isolation Protection: Provides up to 2000 V isolation for RS-422 and RS-485 ports, ensuring reliable operation in electrically noisy environments.
- Flexible Configuration: Independent I/O address and IRQ settings for each port; configurable via software utility (IO-IRQ.EXE).
- UART Compatibility: Equipped with four 16C550C-compatible UARTs with 16-byte FIFO buffers for efficient data handling and hardware flow control.
- ISA/EISA Bus Interface: 16-bit AT bus architecture supporting IRQs 2–5, 7, 10–12, and 15.
- Auto Data Direction Control: RS-485 ports support automatic data direction switching for half-duplex communication.
- Comprehensive OS Support: Native drivers for Windows NT, Windows 95/98, DOS, and Windows 3.x; compatible with Linux, SCO UNIX, OS/2, and others.
- Diagnostic and Development Tools: Bundled with Moxa’s PComm communication library and utilities for diagnostics, monitoring, and programming.
- Industrial Reliability: Designed for system integrators and OEMs requiring robust, high-performance multiport serial communication solutions.

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### 3. Technical Specifications

| Parameter | Specification |
|----------------|-------------------|
| Bus Interface | ISA (EISA compatible), 16-bit AT bus |
| Number of Ports | 4 independent serial ports |
| Interface Types | RS-232, RS-422, RS-485 (individually selectable per port) |
| Isolation Protection | 2000 V (RS-422/RS-485 only) |
| Baud Rate Range | 50 bps to 921.6 kbps |
| Data Bits | 5, 6, 7, 8 |
| Stop Bits | 1, 1.5, 2 |
| Parity | None, Even, Odd, Space, Mark |
| UART Type | 4 × 16C550C or compatible (with 16-byte FIFO) |
| I/O Address Range | 0x0000 – 0xFFFF (DIP switch selectable) |
| IRQ Options | 2, 3, 4, 5, 7, 10, 11, 12, 15 |
| Interrupt Vector | Configurable (default 0x1C0) |
| Configuration Access Port (CAP) | Default 0x180; optional 0xA700 (via JP1) |
| Connectors | DB-37 female on board; breakout cable to 4 × DB-9 male (DTE) |
| Cable Length | 0.3 m (DB-37 to 4 × DB-9) |
| Dimensions | 220 mm × 115 mm (approx. 8.7 × 4.5 in) |
| Operating Temperature | 0°C to 55°C |
| Storage Temperature | -20°C to 85°C (typical) |
| Relative Humidity | 5% to 95% non-condensing |
| Power Requirements | Standard ISA bus power (5 VDC) |
| Weight | Approx. 200 g (board only) |
| Material | Multi-layer PCB with gold-plated edge connector |

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### 4. Functionality

Operational Overview:
The C114HI functions as a multiport asynchronous serial communication board, enabling PCs to interface with up to four serial devices simultaneously. Each port can be configured for RS-232 (non-isolated), RS-422, or RS-485 (isolated) operation. Configuration is achieved via onboard jumpers and software utilities.

Use Cases and Applications:
- Industrial automation and process control
- Data acquisition systems
- SCADA and telemetry networks
- POS and kiosk systems
- Modem, printer, and terminal connectivity
- Multi-drop RS-485 communication networks

Compatibility:
- Fully compatible with PC COM1–COM4 standards.
- Supports both 2-wire and 4-wire RS-485 modes.
- Compatible with most operating systems and third-party communication software.

Communication Modes:
- RS-232: Point-to-point, single-ended signaling.
- RS-422: Differential signaling for long-distance, high-speed communication.
- RS-485: Differential, multi-drop communication supporting up to 32 nodes per bus.

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### 5. Components & Accessories

Included Items:
1. C114HI 4-port serial board
2. User’s Manual (printed and digital)
3. Driver diskettes:
- Windows NT/95/98 driver
- DOS/Windows 3.x driver
- PComm utility diskette
4. 30 cm DB-37 to 4 × DB-9 male cable

Optional Accessories:
- Additional DB-37 to DB-9 breakout cables
- Termination resistors (RT1–RT8) for impedance matching
- External isolation modules (for extended protection)

Connectors:
- DB-37 Female (on board): Breaks out to four DB-9 male connectors.
- DB-9 Male (per port): Standard DTE pinout for RS-232/422/485.

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### 6. Installation & Setup

Hardware Installation Steps:
1. Power off the PC and remove the cover.
2. Set interface type (RS-232/422/485) for each port using jumpers JP2–JP13.
3. Insert the C114HI into a 16-bit ISA slot.
4. Connect the DB-37 to 4 × DB-9 cable.
5. Power on the PC and run the DOS configuration utility IO-IRQ.EXE to assign I/O addresses, IRQs, and interrupt vectors.
6. Install the appropriate driver for the target operating system.

Default Factory Settings:
- I/O Addresses: 0x180, 0x188, 0x190, 0x198
- IRQ: 10 (shared by all ports)
- Interrupt Vector: 0x1C0
- CAP Address: 0x180

Software Installation:
- Windows NT/95/98: Use Setup95.exe or Control Panel → Network → Adapters → “Moxa Smartio/Industio Family.”
- DOS/Windows 3.x: Run DOSINST.EXE or WININST.EXE.
- UNIX/OS2: Configure using system utilities (e.g., `mkdev serial` for SCO UNIX).

Configuration Utility:
- IO-IRQ.EXE: DOS-based tool for setting I/O, IRQ, and CAP parameters.
- Moxa Configuration Panel: Windows GUI for board and port setup.

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### 7. Performance & Capabilities

Speed and Throughput:
- Supports baud rates from 50 bps to 921.6 kbps.
- Two selectable speed spectra:
- Normal Spectrum: Standard baud rates (50–115.2 kbps).
- High-Speed Spectrum: 8× normal rates (400–921.6 kbps).

Data Integrity:
- 16-byte FIFO buffers prevent data loss at high speeds.
- Hardware and software flow control supported.

Isolation and Protection:
- 2000 V isolation for RS-422/485 channels.
- Protection against ground loops and transient surges.

Capacity:
- Up to 4 ports per board; up to 4 boards per system (16 ports total).

Limitations:
- RS-232 mode is non-isolated.
- ISA bus limits compatibility with modern PCI-only systems.

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### 8. Standards & Compliance

Electrical Standards:
- RS-232 (EIA/TIA-232)
- RS-422 (EIA/TIA-422-B)
- RS-485 (EIA/TIA-485-A)

Bus Interface Standard:
- ISA/EISA 16-bit AT bus

Isolation Rating:
- 2000 V RMS (RS-422/485)

Regulatory Compliance:
- CE compliant (EMC and safety)
- FCC Class A (industrial/commercial use)

Software Standards:
- Microsoft Windows COMM API compatible
- Supports standard serial communication protocols (ASCII, XMODEM, YMODEM, ZMODEM, KERMIT)

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### 9. Additional Information

Warranty:
- Standard Moxa limited warranty (typically 3 years; consult manufacturer for details).

Technical Support:
- Email: support@moxa.com.tw
- FTP: ftp.moxa.com / ftp.moxa.com.tw (User ID: ftp, Password: your_email_address)
- Online resources: driver updates, manuals, FAQs, and troubleshooting guides.

Maintenance:
- Periodic inspection of connectors and cables recommended.
- Ensure proper grounding and termination for RS-422/485 networks.
- Firmware and driver updates available via Moxa FTP site.

Software Tools:
- PComm: Windows-based communication library and utilities for diagnostics, monitoring, and programming.
- API-232: DOS-based programming library supporting C, Pascal, BASIC, Assembly, and Clipper.
- Data Scope Utility: For real-time monitoring and debugging of serial communication.

Troubleshooting Highlights:
- “Board not found” errors typically indicate I/O or IRQ conflicts.
- CAP address conflicts can be resolved by setting JP1 to force CAP = 0xA700.
- Verify jumper settings and cable wiring for correct interface mode.

Return Procedure:
- Obtain Product Return Agreement (PRA) from dealer.
- Complete Problem Report Form (PRF) with detailed configuration and error description.
- Return product in anti-static packaging with PRA number visible.

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### Summary

The Moxa Industio C114HI is a robust, high-performance 4-port serial communication board engineered for industrial and embedded PC applications requiring flexible, isolated, and high-speed serial connectivity. With its independent port configuration, 2000 V isolation, and comprehensive driver support across multiple operating systems, the C114HI provides a reliable and scalable solution for system integrators and OEMs. Its compatibility with standard PC COM ports, advanced configuration utilities, and Moxa’s PComm development tools make it ideal for demanding industrial communication environments where stability, performance, and configurability are critical.