1. Product Overview
The PLX51-HART-4I solves the communication gap between traditional process instruments (such as pressure and flow transmitters) and modern Ethernet-based control systems. It converts HART device data into Ethernet-compatible protocols, allowing PLCs, SCADA systems, and host computers to directly read and control field instruments.
2. Key Specifications
Communication Channels
- 4 independent HART channels
Electrical Characteristics
- Resolution: 12-bit ADC
- Input impedance: 247.5 Ω
- Accuracy: < 0.15% calibrated, < 0.30% uncalibrated
- Measuring range: 0 to 22 mA
- Current limiting: 34 mA
Network Interface
- Physical: RJ45 port, compatible with Cat5 STP/UTP cables
- Protocols: EtherNet/IP, Modbus TCP/IP, DNP3 (TCP/UDP), PCCC (AB-ETH)
- Connection capacity: Up to 20 ARP/TCP connections, 10 CIP connections
3. Main Features
- Multi-drop Communication: Supports up to 4 HART devices in multi-drop mode, reducing wiring costs.
- Direct Access & Customization: Allows custom HART messaging for direct device access and advanced diagnostics.
- Easy Integration: Works with the ProSoft PLX50 Configuration Utility and supports hot-swapping for simplified maintenance.
- Broad Compatibility: Interoperable with various HART-enabled instruments, including 4-20 mA and 0-20 mA devices.
4. Structure & Components
Front Panel
- 6 LED indicators (Ok, Eth, Ch 0–Ch 3) for monitoring device and channel status.
Terminal Area
- Power terminals
- Earth ground terminal
- 4 channel terminals (Channel 0–3) for connecting field instruments
5. Typical Applications
- Process Control: Connect pressure, temperature, and flow transmitters to host systems.
- Industrial Automation: Integrate HART instruments with Allen‑Bradley/Rockwell PLCs.
- SCADA Systems: Enable remote data acquisition and monitoring via DNP3.
6. Installation & Maintenance Recommendations
- Mounting: Use a DIN rail for secure installation and easy access.
- Power: Supply 24V DC and ensure proper grounding.
- Network Configuration: DHCP is enabled by default; use a static IP in control networks to avoid conflicts.
- Software Tools:
- PLX50 Configuration Utility for IP and channel setup
- Device Flash tool for firmware updates and backups

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If you would like to learn more about our products and services, please feel free to contact us at any time!
- Sales Manager : Jinny
- Email : sales5@xrjdcs.com
- Whatsapp/Mobile:+86 15359273791
Global renowned brand cooperation
ABB 丨 GE 丨Allen Bradley 丨 Honeywell 丨 Emerson 丨 Bently Nevada 丨 Westinghouse
Triconex 丨 Foxboro 丨 ICS Triplex 丨 Hima 丨 Schneider 丨 Yokogawa 丨 Woodward
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• One‑stop shopping: We offer a wide range of industrial control products to meet all your procurement needs.
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We warmly welcome you to contact us by phone or email for inquiries.
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