Product Model: MOD2004-ARM ( DIN-Rail Mount)
Function Description:
Modbus Gateway, MOD2004-Lite (featuring 2 Ethernet port and 4 RS485 serial port, dynamically supporting 1024 points), is capable of collecting Modbus and BACnet IP, and forwarding it as a Modbus RTU/TCP server.
The gateway utilizes X2Modbus software for configuration, where "X" in X2Modbus represents various acquisition-end protocols, "2" is a homophone for "To" indicating conversion, and "Modbus" signifies the ultimate support for standard Modbus RTU/TCP.
Users can configure projects based on the on-site device point list, forwarding the data as a standard Modbus RTU slave station or Modbus TCP server, and uploading it to the hardware gateway. This allows Modbus clients to access data from on-site devices through the gateway.
Note: For the gateway's acquisition end, Modbus register addresses start from 1 in decimal (Base1) and from 0 in hexadecimal (Base0); for the forwarding end, Modbus register base addresses all start from 1 (Base1).
Application Field:
It is used to integrate Modbus RTU device, such as PLC, DDC, temperature controller, elevator, air conditioner, UPS, fire alarm system, smart lighting, electricity meter, water meter, etc., via the Modbus TCP protocol over an Ethernet port into configuration software like Citect, IFIX, RSVIEW, WinCC, Kingview, ForceControl, and others.
Runtime environment:
OS:Win 7, Win8, Win10, Win11, Win Server 2008, Win Server 2016, and more.
Browser: Google Chrome, Microsoft Edge, Apple's Safari, Firefox, Opera, and 360 Speed Mode.
Register Type:
The Modbus gateway supports Modbus RTU/TCP servers. The supported register types and maximum number of points for the server are listed in the table below. Note: The number of gateway registers is dynamically supported, with each type of register capable of supporting up to the total number of points supported by the gateway.

Software Features:
- Green and installation-free, supporting both Chinese and English;
- Support convert Modbus RTU/TCP, BACnet IP to Modbus RTU/TCP server, OPC UA;
- Support multiple Modbus slave functions;
- Modbus Gateway compatible with Modbus routing function;
- Support JS scripts and triggers for logical control;
- Support Web browsing for real-time data viewing;
- Support linear conversion, bit extraction, and high-low byte swapping;
- Support internal variables and device online/offline status checking;
- Support four types of register: 0X, 1X, 3X, and 4X;
- X2Modbus software is easy configuration, with 1024 points configurable within 20 minutes.
- New Protocol can be added in 2 weeks.

Application Principle Diagram

Product Size