Comprehensive Product Summary – TRP-C24H Isolated 16-Channel Open Collector Modbus TCP Module

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### 1. Product Overview

Product Name: TRP-C24H
Model: TRP-C24H
Series: TRP-C Industrial Ethernet I/O Series
Article Number: TRP-C24H
Manufacturer: Trycom Technology Co., Ltd.
Manufacturer Address: No. 35, Zhongxing Rd., Guishan Township, Taoyuan County 333, Taiwan
Contact: Tel: +886-3-350-3351 | Fax: +886-3-350-3352
Website: [www.trycom.com.tw](http://www.trycom.com.tw)

The Trycom TRP-C24H is an isolated 16-channel open collector digital output module designed for Modbus TCP, Modbus RTU/ASCII, and TRP-ASCII communication. It provides robust network-based control for industrial automation systems, offering high isolation, flexible configuration, and compatibility with SCADA and Modbus-based software environments. The module is engineered for reliability in harsh industrial conditions and supports both DIN-rail and panel mounting.

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### 2. Key Features

- 16 Isolated Digital Output Channels: Each channel provides open collector output up to +30V, 100mA per channel.
- High Isolation Protection: 3750 Vrms isolation between channels and logic circuitry ensures electrical safety and noise immunity.
- Multi-Protocol Support: Automatically detects and supports TRP-ASCII, Modbus RTU, and Modbus ASCII protocols.
- Ethernet Connectivity: Integrated RJ45 Ethernet interface with Auto-MDIX for automatic crossover detection and correction.
- Web-Based Configuration: Built-in web server allows configuration and I/O monitoring via browser on PC, tablet, or smartphone.
- Virtual COM Mode: Enables serial-over-Ethernet communication for legacy applications.
- Pair Mode Functionality: Can be paired directly with TRP-C26H (16-channel digital input module) for remote I/O mirroring without software or drivers.
- Watchdog and Heartbeat Functions: Hardware watchdog prevents system lock-up; heartbeat packets maintain reliable TCP connections.
- Multiple TCP Connections: Supports up to 16 simultaneous TCP client connections.
- Flexible Power Input: Accepts DC +10 V to +30 V via screw terminal or DC jack (5.5 × 2.1 mm).
- LED Indicators: Power, Link, and 16 channel-specific LEDs for real-time status monitoring.
- Firmware Upgradable: Supports firmware updates via the Internet.
- Factory Reset Button: External push button for restoring default configuration.
- Auto-Reconnection: Automatically reconnects after power or Ethernet failure.
- Compact Industrial Design: Rugged enclosure suitable for DIN-rail or panel mounting.

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### 3. Technical Specifications

| Parameter | Specification |
|----------------|------------------|
| Power Input Voltage | DC +10 V to +30 V |
| Power Consumption | 240 mA @ 12 V DC |
| Digital Output Channels | 16 open collector outputs |
| Output Voltage (max) | +30 V DC |
| Output Current (max) | 100 mA per channel |
| Isolation Voltage | 3750 Vrms |
| Communication Interface | Ethernet RJ45 (Auto-MDIX supported) |
| Protocols Supported | TRP-ASCII, Modbus RTU, Modbus ASCII |
| TCP Connections | 1–16 simultaneous connections |
| Module ID Range | 1–255 |
| Heartbeat Interval | 5 seconds (TCP keep-alive) |
| Configuration Tools | Trycom Device Manager (DSM), Web browser |
| Power Connection | Screw terminal or DC jack (5.5 × 2.1 mm) |
| Terminal Wire Gauge | Up to AWG 12 |
| Operating Temperature | 0 °C to +50 °C |
| Storage Temperature | –10 °C to +70 °C |
| Humidity | 10–90 % RH, non-condensing |
| Dimensions | 151 mm (L) × 75 mm (W) × 26 mm (H) |
| Weight | 395 g |
| Mounting Options | DIN-rail or panel mount |
| Indicators | Power, Link, 16 × DO LEDs |
| Enclosure | Industrial-grade metal housing |

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### 4. Functionality

The TRP-C24H operates as a network-based digital output controller. Each of its 16 open collector outputs can drive external devices such as relays, lamps, solenoids, or other low-voltage actuators. The module communicates over Ethernet using Modbus TCP, Modbus RTU/ASCII, or TRP-ASCII protocols, allowing seamless integration into existing industrial control systems.

Operation Modes:
- Modbus TCP Server Mode: Responds to Modbus TCP requests from SCADA or PLC systems.
- Virtual COM Mode: Emulates a serial COM port over Ethernet for legacy software compatibility.
- Pair Mode: When paired with a TRP-C26H input module, the TRP-C24H mirrors input states remotely without requiring a PC or software intermediary.

Use Cases:
- Industrial automation and process control
- Remote I/O expansion for PLCs
- Building management systems (BMS)
- SCADA and HMI integration
- Machine control and monitoring
- Remote relay actuation and alarm signaling

Compatibility:
- Works with Modbus-compatible software such as Modscan32, Modbus Poll, CAS Modbus Scanner, and most SCADA platforms.
- Supports integration with custom software via TRP-ASCII commands (usable in VB, VC++, or other programming environments).

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### 5. Components & Accessories

Included Components:
- TRP-C24H main module
- User manual (Rev. 1.4, printed September 2014)
- Configuration utility software (DSM and TRPCOM)
- Virtual COM driver (VCOMM.exe)
- Mounting hardware for DIN-rail/panel installation

Optional Accessories:
- TRP-C26H 16-channel digital input module (for pair mode operation)
- TRP-C28H 4-channel digital I/O module (for mixed I/O pairing)
- External DC power adapter (10–30 V DC)
- Ethernet RJ45 cable (straight or crossover, Auto-MDIX supported)

Connectors:
- Ethernet Port: RJ45, 10/100 Mbps, Auto-MDIX
- Power Input: Screw terminal or DC jack (5.5 × 2.1 mm)
- I/O Terminal Block: Screw terminals for 16 DO channels, EXT.PWR, and EXT.GND

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### 6. Installation & Setup

Installation Steps:
1. Power Connection: Connect a DC power source (10–30 V) to the screw terminal or DC jack. The Power LED will blink to indicate readiness.
2. Network Connection: Connect the RJ45 Ethernet port to a LAN switch, router, or PC. The Link LED will illuminate when a valid connection is established.
3. I/O Wiring: Connect external devices to the screw terminal block according to the pin assignment (DO0–DOF).
4. Configuration:
- Use Trycom Device Manager (DSM) to search, configure, and update firmware.
- Alternatively, access the built-in web server by entering the module’s IP address (default 192.168.1.1) in a browser.
5. Factory Reset: Hold the reset button during power-up until the Power LED flashes to restore default settings.

Mounting Options:
- DIN-Rail Mounting: Standard 35 mm DIN-rail clip for industrial cabinets.
- Panel Mounting: Screw holes provided for direct panel installation.

Configuration Parameters:
- Device name, IP address, subnet mask, gateway, DNS
- DHCP enable/disable
- TCP port and maximum connection count (1–16)
- Module ID (1–255)
- Power-on and safe-mode output states
- LED display mode (on/off)
- Watchdog enable/disable
- Pair mode activation and remote IP configuration

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### 7. Performance & Capabilities

Electrical Performance:
- Each output channel supports up to 100 mA sink current at +30 V DC maximum.
- 3750 Vrms isolation ensures protection against surges and ground loops.
- Power consumption: 240 mA at 12 V DC (typical).

Network Performance:
- Ethernet 10/100 Mbps with Auto-MDIX for flexible cabling.
- Up to 16 concurrent TCP connections, allowing multiple clients (e.g., SCADA, HMI, and monitoring systems) to access the module simultaneously.
- Heartbeat function: Sends a keep-alive packet every 5 seconds to maintain stable communication.
- Auto-reconnection: Automatically restores communication after network or power interruptions.

Reliability Features:
- Hardware watchdog: Prevents system hang-ups and ensures automatic recovery.
- Voltage monitoring: Ensures stable operation during power-up.
- Safe-mode output: Maintains predefined output states during communication loss or watchdog activation.

Limitations:
- Output current limited to 100 mA per channel (suitable for signal-level control, not direct load driving).
- Operating temperature limited to 0–50 °C; requires ambient control in extreme environments.

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### 8. Standards & Compliance

- Communication Standards:
- Modbus TCP (Ethernet-based)
- Modbus RTU/ASCII (serial protocol emulation)
- TRP-ASCII proprietary command set

- Electrical Safety:
- 3750 Vrms isolation between logic and output circuits
- Industrial-grade surge and noise immunity

- Network Standards:
- IEEE 802.3 10/100 Base-T Ethernet
- Auto-MDIX crossover detection

- Environmental Compliance:
- Operating humidity 10–90 % non-condensing
- RoHS-compliant construction (lead-free components)

- Regulatory Compliance:
- CE and FCC Class A (industrial environment) compliance (typical for Trycom modules)

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### 9. Additional Information

Warranty:
Standard manufacturer’s warranty (typically 1 year) covering defects in materials and workmanship.

Support & Maintenance:
- Technical support available via Trycom’s website and email.
- Firmware updates downloadable from Trycom’s support portal.
- DSM utility allows firmware upgrade, configuration backup, and restoration.

Maintenance Recommendations:
- Ensure stable DC power supply within 10–30 V range.
- Avoid simultaneous use of DC jack and screw terminal power inputs.
- Periodically verify Ethernet connection integrity and LED indicators.
- Use surge protection in electrically noisy environments.

Software Tools Provided:
- Trycom Device Manager (DSM): For device discovery, configuration, and firmware updates.
- TRPCOM Utility: For command testing and debugging during software development.
- Virtual COM Utility (VCOMM.exe): For creating virtual serial ports over Ethernet.

Firmware & Configuration Management:
- Firmware can be updated via DSM or web interface.
- Configuration can be saved to or loaded from external log files.
- Factory reset restores default IP (192.168.1.1) and parameters.

Pair Mode Operation:
When paired with a TRP-C26H input module, the TRP-C24H replicates input states across the network in real time.
- No PC or software required.
- Automatic reconnection after power or network failure.
- LED indicators flash during pairing and remain steady when linked.

Example Applications:
- Remote control of machinery or lighting systems.
- Distributed I/O expansion for PLCs.
- Real-time monitoring and actuation in SCADA networks.
- Integration with Modbus-based automation controllers.

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### Summary

The Trycom TRP-C24H is a versatile, industrial-grade Ethernet digital output module offering 16 isolated open collector outputs with robust Modbus TCP/RTU/ASCII communication. Its combination of multi-protocol support, web-based configuration, pairing capability, and high isolation makes it ideal for distributed control and monitoring in industrial automation, building management, and remote I/O applications. With flexible power options, multiple mounting methods, and comprehensive software support, the TRP-C24H provides a reliable and scalable solution for modern networked control systems.