PROSOFT PLX31-MBTCP-MB
1. Overview and Core Functions
The PROSOFT PLX31-MBTCP-MB is a protocol converter specifically designed for industrial field applications. It enables data exchange between modern Ethernet-based control systems (Modbus TCP/IP) and traditional serial devices (Modbus Serial).
It is typically used in scenarios requiring the integration of old and new systems, such as aggregating data from traditional serial sensors controlled by PLCs into upper-level computers or SCADA systems.
2. Parameters and Technical Specifications
Power Supply Specifications
DC power supply: 10-36 VDC, with a standard voltage of 24 VDC. Operating current is approximately 300mA, and the peak current can reach 610mA.
Interface Configuration
- Ethernet Interface: 1 x 10/100 Mbit RJ45 port, supporting full-duplex mode.
- Serial Interface: 1 x RS-232/RS-485/RS-422 interface (depending on the specific model), supporting 2500 Vrms electrical isolation.
Physical Characteristics
Complies with IP20 protection class, dimensions are approximately 50.5mm x 136.7mm x 111.3mm, and adopts a robust industrial housing design.
3. Product Features
- Flexible Communication Configuration: Supports up to 10 Modbus client and 10 Modbus server instances. Users can configure these instances within the gateway to map different device addresses.
- High-Speed and Reliable Transmission: Leverages the high-speed characteristics of Ethernet to improve the response speed of serial devices to the millisecond level, and supports efficient connection management of Modbus TCP/IP.
- Durable Design: Complies with IEC 60068 environmental testing standards, featuring shock resistance and vibration resistance, suitable for harsh industrial environments.
4. Structure and Composition
- Power Supply Module: Receives 10-36 VDC power supply and performs voltage conversion and regulation.
- Processing Module: Internally includes a microprocessor and protocol stack for executing protocol conversion between Modbus TCP/IP and Modbus Serial.
- Interface Module: Provides physical connection points, including an RJ45 Ethernet port and a serial port (usually a DB9 interface).
5. Application Areas
- Remote I/O Connection: Connects remote serial I/O modules using Ethernet in factory workshops.
- Historical Data Collection: Integrates old serial protocol instruments into modern SCADA or data acquisition systems.
- System Integration: Used to connect devices from different manufacturers or different protocol levels, breaking communication barriers.
6. Installation and Maintenance
Installation
Typically installed on DIN rails, with an IP20 protection class housing, suitable for placement inside control cabinets.
Maintenance
Equipped with multiple status indicators (such as power, error, network status, etc.), facilitating on-site troubleshooting and monitoring.

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About Us
We are a high-tech enterprise with many years of experience specializing in the sales of spare parts for large-scale imported automation systems, including Distributed Control Systems (DCS), Programmable Logic Controllers (PLC), redundant fault-tolerant control systems, and robot systems.
We focus on the sales and system integration of imported automation components from world-leading brands such as ABB, Foxboro, Triconex, Bently Nevada, Ovation, Motorola, Xycom, Allen-Bradley (A-B), Schneider Electric, GE Fanuc, Yaskawa, Woodward, and many others.
Core Business & Advantages
• Spare Parts SupplyWe maintain extensive inventory of automation spare parts, enabling us to respond quickly to customer needs. Our product range covers major brands including ABB, FOXBORO, TOSHIBA, and more.
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• Technical ServicesWe offer professional technical support, including system commissioning, fault diagnosis, repair, and maintenance services, to ensure the stable operation of our customers’ production lines.
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