RS485 to Ethernet / Wi-Fi
Ethernet and Wi-Fi can operate simultaneously, giving connected RS485 devices dual IP network access.
Product
A119019 RS485 to Ethernet/WiFi Converter
A119019 is an industrial RS485 communication converter for connecting serial meters and field devices to Ethernet or WiFi networks. It supports Modbus RTU, DL/T 645 and DLMS/COSEM on the RS485 side, with TCP pass-through, MQTT, Modbus TCP and REST API connectivity. The DIN-rail converter operates from 220–230 V and supports −20°C to +70°C operation.
DIN-Rail Mounting (1P / 18 mm)
RS485 to Ethernet/WiFi Dual-Mode
Industrial-Grade Wide Temperature
32 Max RS485 device connections
3 RS485-side protocols
220–230 V Rated voltage
−20°C to +70°C Operating temperature
Product Highlights
Connect RS485 Meters to Ethernet and Wi-Fi
Up to 32 RS485 Devices
Connects up to 32 RS485 meters or field devices through one converter.
Three RS485 Meter Protocols
Supports Modbus RTU, DL/T 645 and DLMS / COSEM on the RS485 side.
IP-Side Protocol Conversion
Provides TCP pass-through plus MQTT, Modbus TCP and REST API connectivity on Ethernet/Wi-Fi.
MQTT Protocol Auto-Adaptation
Identifies the target DLMS or DL/T 645 protocol from downlink MQTT fields for automatic conversion.
OTA Updates and Data History
Supports remote OTA updates, local historical data access and Web visualization.
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Explore ApplicationTechnical Specifications
Technical Specifications
| Voltage connection | Direct connection |
| Rated voltage | 220–230 V |
| Frequency | 50/60 Hz |
| Power consumption | ≤2 W |
| Communication interface | RS485 + Ethernet + WiFi |
| RS485 protocols | Modbus RTU, DL/T 645, DLMS/COSEM |
| Network protocols | TCP pass-through, MQTT, Modbus TCP, REST API |
| Communication type | Bidirectional |
| RS485 configuration | Modbus address 1–247, 115200 bps, 8N1, max 32 devices |
| WiFi | IEEE 802.11 b/g/n, 2.4 GHz, AP and STA mode |
| Ethernet | RJ45, 10/100M auto-negotiation |
| Refresh time | ≤3000 ms |
| Pass-through mode | RS485 ↔ Ethernet/WiFi transparent transmission (TCP pass-through) |
| Protocol conversion | MQTT reporting, Modbus TCP conversion, downlink MQTT field auto-recognition to DLMS or DL/T 645 |
| Configuration | Web page and MQTT remote configuration |
| Data storage | Local data storage with historical access and Web visualization |
| Multi-protocol concurrency | Ethernet and WiFi online simultaneously, multi TCP/MQTT connection management |
| LED indicators | Run indicator and network indicator |
| IP rating | IP30 (install in a suitably rated enclosure) |
| Protection class | Class II |
| Rated impulse voltage | 6 kV |
| Mounting | DIN-rail (1P / 18 mm) |
| Wiring | RS485 terminal, RJ45 Ethernet, power terminal |
| Operating temperature | −20°C to +70°C |
| Relative humidity | ≤95% (non-condensing) |
| Altitude | ≤2000 m |
Structure & Dimensions
A119019 Dimensions & Wiring
Dimensions
Wiring
FAQ
Product FAQ
What is A119019?
A119019 is an industrial RS485 to Ethernet/WiFi converter that bridges RS485 serial devices to IP networks.
Which interfaces does A119019 support?
RS485, Ethernet (RJ45) and WiFi (2.4 GHz); Ethernet and WiFi can be online simultaneously.
Which protocols are supported on RS485 and IP networks?
RS485: Modbus RTU, DL/T 645, DLMS/COSEM. Network: TCP pass-through, MQTT, Modbus TCP, REST API.
How many RS485 devices can it connect?
Up to 32 RS485 devices.
How is it configured?
Web page and MQTT remote configuration are supported, subject to the project network setup.
What is the IP rating?
IP30; it should be installed inside a suitably rated enclosure.
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