DLMS to Modbus

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Software gateway for the conversion between DLMS protocol and Modbus/TCP-RTU

The DLMS-to-Modbus software manages the protocol conversion between DLMS (protocol typically present on electrical energy meters) and Modbus/RTU.

The software allows you to interface to the optical port (with accessory USB optical probe or Serial Optical Probe) or on RS232 / RS485 port of the counter that implements the DLMS protocol and to convert the acquired data in Modbus memory areas. The software supports the Modbus RTU and TCP communication, and can act as Slave or as Master.

The product acts as a gateway and allows to put in communication between their equipment with the communication systems of different physical levels.


The most common scenarios for using the software are the following:

Concentrator: In this mode the software is configured as Master DLMS on some of its serial/optical interfaces. Through these interfaces, the software goes to interrogate the counters and maintains the acquired values in the memory. The values are then made available as Slave Modbus RTU and / or TCP for requests from the PLC, devices, SCADA that interrogate the product.

Gateway Multi-Master: the software can be configured as Master both on DLMS side and on Modbus TCP/RTU side. The software can, in this way, manage of moving the data acquired from the meters on Modbus slaves, such as PLC.


The main features of the software are:

Link / Connections To more devices through Ethernet network (TCP, UDP) or RS232 / RS422 / RS485 or optical probes
Configuration Intelligent configurator with automatic detection address syntax mistakes
Traffic analysis Analysis and recording of data exchanged on the network (performance analysis)
Diagnostic of communication at the level of OPC variables
Type of data supported Integers 16bit with sign
Integers 16bit without sign
Integers 32bit with sign
Integers 32bit without sign
Real 16bit
Real 32bit
Management of variables of boolean type for the holding register area and input register, with the Read-Modify-Write metodology for the writing
Additional features Possibility of swap data to byte, word, double word
Support block transfer with settable size to optimize communication
Import/Export of created configurations 
Optimized communication speed for RTU serial protocol
Operating systems supported Compatible with WIN NT 4.0, WIN 2000, WIN 2003, WIN XP and WIN VISTA, WIN 7, WIN 8 (32 bit and 64 bit)

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