Comprehensive Product Summary – TRP-C68H Isolated 8-Channel Analog Input Modbus TCP Module

---

### 1. Product Overview

Product Name: TRP-C68H
Model: TRP-C68H
Series: TRP-C Series Industrial Communication Modules
Article Number: TRP-C68H
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)
Firmware Version: 613
Manual Revision: Rev. 1.0 (Printed November 2016)

The Trycom TRP-C68H is an industrial-grade, isolated 8-channel analog input module designed for data acquisition and remote monitoring applications over Ethernet networks. It supports Modbus TCP, Modbus RTU/ASCII, and Trycom’s proprietary TRP-ASCII protocols, enabling flexible integration with SCADA systems, PLCs, and industrial automation controllers. The device provides high-resolution analog input measurement with galvanic isolation, surge protection, and robust network connectivity for reliable operation in harsh industrial environments.

---

### 2. Key Features

- 8 Differential Analog Input Channels: Each channel supports voltage or current input modes, selectable via internal jumpers.
- High Resolution and Sampling Rate: 16-bit or 24-bit resolution with selectable sampling modes—Normal (10 samples/sec) and Fast (60 samples/sec).
- Wide Input Range: Voltage input ranges of ±10V, ±5V, ±2.5V, ±1.25V, ±650mV; current input range of ±20mA or 4–20mA.
- Electrical Isolation: 3750 Vrms optical isolation between input channels and communication interface for enhanced safety and noise immunity.
- Surge Protection: Built-in surge absorbers on each channel to prevent damage from transient voltages.
- Multi-Protocol Support: Automatically detects and supports TRP-ASCII, Modbus RTU, and Modbus ASCII communication protocols.
- Ethernet Connectivity: RJ45 interface with Auto-MDIX support for automatic crossover detection and correction.
- Web-Based Configuration: Integrated web server for configuration, monitoring, and firmware updates via LAN.
- Network Security: Supports up to 8 authorized host IP addresses for controlled network access.
- Watchdog Function: Ensures stable operation and automatic recovery from system or network failures.
- Heartbeat Function: Periodic TCP keep-alive messages every 5 seconds to maintain reliable communication.
- Multiple TCP Connections: Supports up to 16 simultaneous TCP client connections.
- Flexible Power Input: Dual power input options—screw terminal or DC jack (10–30V DC).
- Mounting Options: DIN-rail and panel mounting supported for versatile installation.
- LED Indicators: Power, link, and per-channel status LEDs for quick diagnostics.
- Factory Reset Button: External button for restoring factory default configuration.
- Firmware Upgrade via LAN: Simplified update process through network interface.
- Virtual COM Port Support: Enables legacy serial applications to communicate over Ethernet.

---

### 3. Technical Specifications

| Parameter | Specification |
|----------------|------------------|
| Analog Input Channels | 8 differential inputs |
| Input Type | Voltage or Current (jumper selectable) |
| Voltage Input Ranges | ±10V, ±5V, ±2.5V, ±1.25V, ±650mV |
| Current Input Ranges | ±20mA, 4–20mA |
| Resolution | 16-bit (Fast Mode), 24-bit (Normal Mode) |
| Sampling Rate | 10 samples/sec (Normal), 60 samples/sec (Fast) |
| Bandwidth | 15.72 Hz (Normal), 78.72 Hz (Fast) |
| Accuracy | ±0.1% (Normal), ±0.5% (Fast) |
| Zero Drift | 0.03 µV/°C |
| Span Drift | 25 ppm/°C |
| Common Mode Rejection Ratio (CMRR) | ≥92 dB @ 50/60 Hz |
| Overvoltage Protection | ±48V |
| Isolation Voltage | 3750 Vrms optical isolation |
| Power Supply Voltage | +10V to +30V DC |
| Power Consumption | 320 mA @ 12V DC |
| Communication Interface | Ethernet RJ45 (Auto-MDIX) |
| Supported Protocols | TRP-ASCII, Modbus RTU, Modbus ASCII |
| TCP Connections | 1–16 simultaneous connections |
| Module ID Range | 1–255 |
| Configuration Interfaces | Web browser, DSM utility |
| Heartbeat Interval | 5 seconds |
| 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 | DIN-rail or panel mount |
| Connection Type | Screw terminal (max AWG 12) |
| Power Connector | Screw terminal or 5.5 × 2.1 mm DC jack |

---

### 4. Functionality

The TRP-C68H functions as an Ethernet-based analog input acquisition module. It converts analog voltage or current signals from sensors or transducers into digital data accessible via Modbus TCP or ASCII protocols. Each of the eight channels can be configured independently for voltage or current input, allowing flexible integration with various analog devices.

Operation Workflow:
1. Analog signals are received through differential input terminals.
2. The internal ADC (Analog-to-Digital Converter) digitizes the signals with 16- or 24-bit resolution.
3. Data is transmitted over Ethernet using Modbus TCP or ASCII protocol.
4. Users can monitor and configure the module through a web browser or Trycom’s DSM utility.

Use Cases and Applications:
- Industrial process monitoring and control
- SCADA and DCS systems
- Remote data acquisition
- Environmental monitoring (temperature, pressure, flow sensors)
- Laboratory instrumentation
- Building automation and energy management systems

Compatibility:
- Compatible with Modbus TCP/RTU/ASCII master devices such as PLCs, HMIs, and SCADA software.
- Supports Trycom’s TRP-ASCII protocol for custom software integration (VB, VC, etc.).
- Works with Trycom DSM and TRPCOM utilities for configuration and testing.

---

### 5. Components & Accessories

Included Components:
- TRP-C68H main module
- User manual (digital or printed)
- Mounting hardware (DIN-rail clip or panel screws)

Connectors:
- Ethernet Port: RJ45 connector with link/activity LED
- Power Input: Screw terminal and DC jack (5.5 × 2.1 mm)
- Analog Input Terminals: 8 differential channel pairs (VIN0± to VIN7±)
- Ground Terminals: F-GND and A-GND for earth grounding

Optional Accessories:
- External DC power adapter (10–30V DC)
- Ethernet cable (straight or crossover, Auto-MDIX supported)
- DIN-rail mounting kit

---

### 6. Installation & Setup

Installation Steps:
1. Power Connection: Connect a 10–30V DC power source via screw terminal or DC jack. The PWR LED will blink to indicate readiness.
2. Network Connection: Connect the RJ45 Ethernet port to a LAN, router, or PC. The LINK LED will illuminate when a valid connection is established.
3. Signal Wiring: Connect analog input signals to the screw terminals according to the channel pinout.
4. Configuration:
- Use the DSM utility to detect and configure the module over the network.
- Alternatively, access the built-in web server by entering the module’s IP address in a browser.

Mounting Options:
- DIN-rail mounting for industrial control panels.
- Panel mounting using screw holes on the enclosure.

Configuration Tools:
- DSM Utility: For network discovery, configuration, firmware upgrade, and saving/loading settings.
- Web Interface: For IP configuration, channel setup, and real-time analog value monitoring.

Factory Reset Procedure:
Hold the factory button while powering on the device until the power LED flashes, then release to restore default settings.

---

### 7. Performance & Capabilities

- High-Speed Data Acquisition: Up to 60 samples per second in fast mode for dynamic signal monitoring.
- Precision Measurement: 24-bit resolution ensures high accuracy and low noise for sensitive analog signals.
- Network Reliability: Heartbeat and watchdog functions maintain stable communication and prevent system lockups.
- Multi-Host Connectivity: Supports up to 16 simultaneous TCP connections, allowing multiple clients to access data concurrently.
- Security Control: Restrict access to up to 8 predefined host IP addresses for secure network operation.
- Auto-Reconnection: Automatically re-establishes communication after power or Ethernet failure.
- Firmware Upgradability: LAN-based firmware updates ensure long-term maintainability.

Limitations:
- Operating temperature limited to 0–50°C; not suitable for extreme environments without enclosure protection.
- Analog input limited to ±48V overvoltage protection; higher transients require external suppression.
- No built-in relay or digital output functions (analog input only).

---

### 8. Standards & Compliance

- Isolation Standard: 3750 Vrms optical isolation between input and communication circuits.
- Communication Standards:
- Modbus TCP (Ethernet-based)
- Modbus RTU/ASCII (serial protocol emulation)
- TRP-ASCII proprietary protocol
- Electrical Safety: Designed for industrial DC power systems (10–30V DC).
- Environmental Compliance: Operates within industrial temperature and humidity ranges.
- EMC Protection: Built-in surge absorbers and noise suppression for stable operation in electrically noisy environments.
- Network Standards: IEEE 802.3 Ethernet, Auto-MDIX compliant.

---

### 9. Additional Information

Warranty:
Standard manufacturer warranty provided by Trycom Technology Co., Ltd. (duration subject to regional policy). Covers defects in materials and workmanship under normal use.

Technical Support:
- Trycom provides online resources, firmware updates, and configuration utilities via its official website.
- Technical assistance available through email or phone support.

Maintenance:
- Periodically inspect wiring and connectors for corrosion or looseness.
- Ensure proper grounding to maintain isolation integrity.
- Firmware updates can be applied via LAN using DSM utility or web interface.

Firmware & Software Updates:
- Firmware version 613 or later recommended for full feature support.
- DSM utility version 6.07 or above required for network security configuration.
- TRPCOM test utility available for debugging and development.

Documentation & Resources:
- User’s Manual (Rev. 1.0, Nov. 2016)
- DSM Utility and TRPCOM software (available from Trycom website)
- Modbus and TRP-ASCII protocol documentation for integration and custom development.

---

### Summary

The Trycom TRP-C68H is a robust, high-precision, Ethernet-based analog input module engineered for industrial automation and remote monitoring applications. With eight isolated differential channels, multi-protocol support, and flexible configuration options, it provides a reliable interface between analog sensors and digital control systems. Its combination of 24-bit resolution, surge protection, and network redundancy features ensures accurate data acquisition and dependable performance in demanding environments. The TRP-C68H’s web-based management, firmware upgradability, and multi-host connectivity make it a versatile and future-proof solution for modern industrial networks.