Comprehensive Product Summary – TRP-C08S USB to 1 RS232 and 1 RS422/485 Isolated Converter

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### 1. Product Overview

Product Name: TRP-C08S
Model: TRP-C08S
Series: TRP-C Series – USB to Serial Communication Converters
Article Number: TRP-C08S
Manufacturer: Trycom Technology Co., Ltd.
Manufacturer Address: No. 35, Zhongxing Rd., Guishan Township, Taoyuan County 333, Taiwan
Website: [www.trycom.com.tw](http://www.trycom.com.tw)
Contact: Tel: +886-3-350-3351 | Fax: +886-3-350-3352

The Trycom TRP-C08S is a professional-grade USB 2.0 to dual serial interface converter, designed to provide one RS-232 and one RS-422/485 isolated communication channel. It serves as a reliable bridge between modern USB-equipped computers and legacy or industrial serial devices. With robust isolation, surge protection, and full PLC compatibility, the TRP-C08S is engineered for industrial automation, control systems, and data communication applications requiring high reliability and electrical protection.

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### 2. Key Features

- Dual Serial Interface: Provides one RS-232 (DB-9 male) and one RS-422/485 (4-pin screw terminal) port.
- USB 2.0 Connectivity: Fully compliant with USB 2.0 specifications; backward compatible with USB 1.0 and 1.1.
- High Electrical Isolation: 3000 VDC optical isolation on RS-422/485 lines for protection against ground loops and voltage spikes.
- Surge and ESD Protection: ±15 kV ESD protection on both RS-232 and RS-422/485 data lines; surge and short-circuit protection included.
- Auto Configuration: Automatic detection and configuration of RS-422/485 mode, baud rate, and data flow direction.
- Flexible Baud Rate: Supports baud rates from 75 bps up to 921.6 Kbps (depending on configuration and OS driver).
- Full PLC Compatibility: Supports major PLC brands such as Mitsubishi Q/FX series and FATEK controllers.
- FIFO Buffers: On-chip 512-byte FIFO for upstream and downstream data transfers, ensuring stable high-speed communication.
- Power Supply: Powered directly from the USB port (130 mA typical current draw); no external power supply required.
- Mounting Options: Supports DIN-rail and panel mounting for industrial environments.
- LED Indicators: Power and communication LEDs (TXA/RXA/TXB/RXB) for real-time status monitoring.
- Cross-Platform Driver Support: Compatible with Windows (98/ME/2000/XP/Vista/7/8/8.1/CE5.0–7.0), Linux, Mac OS, and Android.
- Compact and Durable Design: Industrial-grade enclosure with robust connectors and screw terminals for secure wiring.

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### 3. Technical Specifications

| Parameter | Specification |
|----------------|-------------------|
| Input Interface | USB 2.0 Type B connector |
| Output Interfaces | 1 × RS-232 (DB-9 male, DTE) <br> 1 × RS-422/485 (4-pin screw terminal) |
| RS-232 Signal Type | Standard full-duplex, 9-pin DTE configuration |
| RS-422 Signal Type | Differential 4-wire full-duplex (TX+, TX−, RX+, RX−) |
| RS-485 Signal Type | Differential 2-wire half-duplex (D+, D−) |
| Isolation Voltage | 3000 VDC optical isolation (RS-422/485) |
| Surge Protection | Internal surge protection on all data lines |
| ESD Protection | ±15 kV ESD protection on RS-232 and RS-422/485 lines |
| Baud Rate Range | 75 bps to 921.6 Kbps (auto-switching) |
| Data Format | Asynchronous; configurable data bits, parity, and stop bits |
| Data Bits | 5, 6, 7, or 8 bits |
| Parity Options | None, Odd, Even, Mark, Space |
| Stop Bits | 1, 1.5, or 2 |
| Flow Control | XON/XOFF (software), RTS/CTS (hardware), or None |
| Communication Distance | RS-422/485: up to 4000 ft (1250 m) |
| Connection Type | Screw terminal block (AWG #12–30) |
| Power Source | USB bus-powered (no external supply) |
| Power Consumption | 130 mA (typical) |
| Operating Temperature | -10°C to +50°C (some documentation lists 0°C to +65°C) |
| Storage Temperature | -20°C to +65°C |
| Humidity | 10–90% RH, non-condensing |
| Dimensions | 151 mm (L) × 75 mm (W) × 26 mm (H) |
| Weight | Approximately 375 g |
| Enclosure Material | Industrial-grade metal housing |
| Mounting Options | DIN-rail or panel mount |
| Cable Type | USB Type A to Type B cable (included) |

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### 4. Functionality

The TRP-C08S functions as a USB-to-serial bridge, enabling a computer or embedded system with a USB interface to communicate with serial devices using RS-232, RS-422, or RS-485 protocols. Upon connection, the host operating system recognizes the converter as two independent COM ports—one for RS-232 and one for RS-422/485—allowing simultaneous communication with two serial devices.

Operation Modes:
- RS-232 Mode: Standard full-duplex communication for point-to-point connections with DCE devices such as modems, PLCs, or serial instruments.
- RS-422 Mode: Full-duplex differential signaling for long-distance, noise-immune communication.
- RS-485 Mode: Half-duplex differential signaling for multi-drop networks supporting up to 32 devices on a single bus.

Auto Configuration:
The converter automatically detects and configures the RS-422/485 mode, baud rate, and data flow direction without requiring manual DIP switch settings. This simplifies setup and ensures compatibility with a wide range of serial devices.

Use Cases and Applications:
- Industrial automation and control systems
- PLC communication (Mitsubishi, FATEK, Siemens, etc.)
- SCADA and data acquisition systems
- Serial device networking and monitoring
- Laboratory instrumentation and test equipment
- Building management and environmental monitoring systems

Compatibility:
The TRP-C08S is compatible with most operating systems and supports standard serial communication APIs, making it suitable for integration into custom software or existing industrial control applications.

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### 5. Components & Accessories

Included Items:
- TRP-C08S USB to RS232/RS422/485 converter unit
- USB 2.0 Type A to Type B cable
- Driver and utility CD (includes TRPCOM.exe test software and drivers for multiple OS platforms)
- User manual (printed or digital)

Optional Accessories:
- DIN-rail mounting kit
- Panel mounting screws
- Additional USB cables (for extended length or industrial-grade shielding)

Connectors:
- USB Port: Type B female connector
- RS-232 Port: DB-9 male connector (DTE configuration)
- RS-422/485 Port: 4-pin removable screw terminal block (supports AWG #12–30 wire gauge)

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### 6. Installation & Setup

System Requirements:
- Available USB 2.0 port on host computer or embedded system
- Supported operating system (Windows, Linux, Mac OS, or Android)
- Administrative privileges for driver installation

Installation Steps:
1. Driver Installation:
Insert the provided CD or download the latest drivers from Trycom’s website. Run the appropriate setup utility (e.g., *MSSetup.exe*) for your OS. Follow on-screen instructions to complete installation.
2. Device Connection:
Connect the TRP-C08S to the host computer using the supplied USB cable. The system will automatically detect the device and assign COM port numbers.
3. Verification:
Check the Device Manager (Windows) or equivalent system utility to confirm the presence of “High-Speed USB Multi Serial Compound Device” and corresponding COM ports.
4. Serial Wiring:
- RS-232: Connect using a straight-through cable for DCE devices or a null modem cable for DTE-to-DTE connections.
- RS-422: Connect TX+/TX− and RX+/RX− differential pairs.
- RS-485: Connect D+ and D− lines for half-duplex communication.
5. Mounting:
Secure the converter using the optional DIN-rail clip or panel-mount screws.

LED Indicators:
- PWR: Power on (USB connection active)
- TXA/RXA: Transmit/Receive activity on RS-422/485 port
- TXB/RXB: Transmit/Receive activity on RS-232 port

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### 7. Performance & Capabilities

Speed and Throughput:
The TRP-C08S supports baud rates from 75 bps up to 921.6 Kbps, depending on the driver and system configuration. The internal 512-byte FIFO buffer ensures smooth data flow even under high-speed or burst transmission conditions.

Capacity and Range:
- RS-422/485 communication distance up to 4000 ft (1250 m)
- Supports up to 32 nodes on an RS-485 bus
- Stable operation across wide temperature and humidity ranges

Efficiency and Reliability:
- Auto direction control on RS-485 eliminates the need for manual RTS signal handling.
- Optical isolation and surge protection safeguard both host and connected devices from electrical transients.
- USB bus power simplifies deployment and reduces wiring complexity.

Limitations:
- RS-485 mode supports half-duplex communication only.
- Maximum baud rate may vary depending on cable quality and environmental noise.
- Requires driver installation for proper operation under Windows and Linux systems.

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### 8. Standards & Compliance

Electrical and Communication Standards:
- USB 2.0 (Full-Speed, backward compatible with USB 1.1)
- EIA/TIA RS-232, RS-422, and RS-485 standards
- Optical isolation: 3000 VDC
- ESD protection: ±15 kV (IEC 61000-4-2 compliant)

Regulatory Compliance:
- CE compliant
- FCC Class A compliant (industrial environment)
- RoHS compliant (lead-free manufacturing)

Industry Compatibility:
- Fully compatible with industrial PLCs and automation systems (Mitsubishi, FATEK, Siemens, etc.)
- Supports SCADA, Modbus RTU, and other serial communication protocols.

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### 9. Additional Information

Warranty:
Standard manufacturer warranty (typically 1 year) covering defects in materials and workmanship. Extended warranty options may be available through Trycom distributors.

Technical Support:
Trycom provides technical documentation, driver updates, and troubleshooting assistance via their official website and support channels.
Support resources include:
- Driver downloads for all supported operating systems
- TRPCOM.exe test utility for loopback and communication verification
- Application notes and wiring diagrams

Maintenance:
The TRP-C08S requires minimal maintenance. Periodic inspection of connectors and cables is recommended to ensure reliable operation. Avoid exposure to excessive moisture or vibration.

Firmware and Software Updates:
Driver and firmware updates are periodically released to enhance compatibility and performance. Users are encouraged to check Trycom’s website for the latest versions.

Testing and Diagnostics:
The included TRPCOM.exe utility allows users to perform loopback tests for RS-232, RS-422, and RS-485 interfaces. This tool verifies data integrity and confirms proper wiring and configuration.

Example Test Procedures:
- RS-232 Loopback: Connect TX and RX pins on the DB-9 connector and verify data echo using TRPCOM.exe.
- RS-422 Loopback: Connect TX+/TX− to RX+/RX− and perform data transmission tests.
- RS-485 Test: Connect to an RS-485 device (e.g., TRP-C28) and send test commands such as “$01M” to verify communication response.

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### Summary

The Trycom TRP-C08S USB to RS232 and RS422/485 Isolated Converter is a robust, industrial-grade communication interface designed to bridge modern USB systems with legacy serial devices. Its combination of dual-port functionality, 3 kV isolation, surge and ESD protection, and auto-configuration capabilities make it ideal for demanding industrial and automation environments. With broad OS compatibility, flexible mounting options, and comprehensive protection features, the TRP-C08S delivers reliable, high-performance serial communication for a wide range of applications—from PLC integration to SCADA systems and laboratory instrumentation.

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Manufacturer: Trycom Technology Co., Ltd.
Model: TRP-C08S
Product Type: USB to RS232/RS422/RS485 Isolated Converter
Key Strengths: Dual-port operation, 3 kV isolation, surge protection, auto-configuration, industrial-grade reliability.
Applications: Industrial automation, PLC communication, SCADA, data acquisition, and serial networking.