DLMS to Modbus Converter
DLMS to Modbus Converter
The UPC-DLMS-RS485 is an industrial protocol gateway that translates DLMS/COSEM smart energy meter communications to standard Modbus RTU over RS-485. Supporting RS-485, RS-232, and optical probe interfaces, it enables seamless integration of utility and sub-metering data into PLCs, SCADA systems, and energy management platforms.
Key Features
- Translates DLMS/COSEM smart energy meter data to Modbus RTU
- Reads cumulative energy registers, instantaneous V/I/PF, and meter serial numbers
- Compatible with RS-485, RS-232, and optical probe meter interfaces
- Modbus RTU slave interface over RS-485
- Rotary address switch for Modbus slave ID selection (1 to 99)
- Configurable baud rates from 1200 to 115200 bps
- 24V DC industrial power supply input
- 35 mm DIN rail mountable enclosure
- Dimensions: 110 mm × 80 mm × 40 mm
Ordering Information
| Product Code | Description |
|---|---|
| UPC-DLMS-RS485 | DLMS to Modbus Converter |
| SPD-RS485 | Surge Protection Device RS485 |
| UC-RS485 | USB to RS485 Converter |
| UC-ETH-RS485 | Ethernet to RS485 Converter |
| SPD-24V-DC | Surge Protection Device 24V DC SPD |
Applications
- Industrial Automation & Process Control: Reliable signal interfacing and device connectivity across automated production lines.
- SCADA & PLC Integration: Seamless communication between field instrumentation and control systems.
- Control Panel Building: Compact 35 mm DIN rail mounting for clean and space-efficient cabinet wiring.
- OEM Equipment & Diagnostics: Robust electrical protection and standard industrial ratings.
Specifications
| Parameter | Value |
|---|---|
| Mounting Type | 35 mm DIN Rail Mounting |
| Dimensions | 60 mm x 50 mm x 20 mm (L x W x H) |
| Enclosure Material | Industrial ABS plastic |
| Operating Temperature | -10 °C to +60 °C |
| Storage Temperature | -40 °C to +85 °C |
| Relative Humidity | 5% to 95% RH (non-condensing) |
Electrical Specifications
| Parameter | Specification |
|---|---|
| Supply Voltage | 24V DC |
| Power Consumption | < 2.0 W @ 24V DC |
| Isolation Voltage | 1,500 V RMS galvanic isolation |
Communication Interface
| Port | Physical Layer | Protocol | Description |
|---|---|---|---|
| Meter Port | Optical / RS-232 / RS-485 | DLMS / COSEM | Communicates with energy meters |
| PLC / SCADA Port | RS-485 2-Wire | Modbus RTU Slave | Exposes mapped meter data |
Mechanical Dimensions
Terminal Details & Port Pinouts
Terminal Connections
| Terminal Block | Pin | Label | Signal | Description |
|---|---|---|---|---|
| Power Supply | 1 | 24V+ | +24V DC | Operating Power Supply Positive |
| 2 | 24V- | 0V | Operating Power Supply Ground Return | |
| 3 | PE | Earth | Protective Earth Ground | |
| Modbus RS-485 | 4 | A+ | RS485-A | Modbus RTU Non-inverting Data (+) |
| (Slave Port) | 5 | B- | RS485-B | Modbus RTU Inverting Data (-) |
| 6 | GND | Iso GND | Modbus RS-485 Isolated Signal Ground | |
| Meter Port | 7 | M-A | DLMS-A | Energy Meter RS-485 Data (+) |
| (DLMS/COSEM) | 8 | M-B | DLMS-B | Energy Meter RS-485 Data (-) |
| 9 | M-GND | Meter GND | Meter Communication Ground Reference |
[!NOTE] For meters equipped with optical probe or RS-232 interfaces, connect via the dedicated front-panel optical probe port.
LED Indications and Diagnostics
| LED | Color | Status | Description |
|---|---|---|---|
| PWR | Red | ON | Operating power 24V DC connected and regulated |
| TX | Green | Blinking | Transmitting data packets on communication port |
| RX | Red | Blinking | Receiving data packets from energy meter or Modbus master |
Revision History
| Revision | Date | Description of Change |
|---|---|---|
| Rev 1.0 | 2026-09-09 | Initial datasheet release |
Get the latest version of this datasheet : click here..
Support
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Email: info@veawe.io