WebLog250 M-Bus data logger with web server and touchscreen

WebLog250 supports up to 250 M-Bus meters and enables remote reading via web browser.

WebLog250 is an industrial M-Bus data logger with integrated web server, designed for large metering installations where convenient meter reading, stable data archiving and simple local and remote access are essential. The device can directly power and read up to 250 M-Bus meters, and with external repeaters it can handle up to 1000 devices. This makes WebLog250 a strong solution for commercial buildings, multi-family housing, hotels, industrial plants and advanced BMS systems.

One of the biggest advantages of WebLog250 is the combination of multiple functions in one device. It is not only an M-Bus data logger, but also a central metering unit with local operation through a 7-inch touchscreen and remote access through a standard web browser. This architecture simplifies configuration, data reading, diagnostics and day-to-day operation without the need for additional operator tools.

WebLog250 for large metering systems and building automation

WebLog250 is designed for installations where meter reading alone is not enough. In practice, these systems also require structured data storage, scheduled export, user access control and convenient integration with supervisory software. That is why the device combines the role of an M-Bus central unit, data logger and user access point in a single enclosure.

From an operational perspective, this solution is especially useful wherever utility billing, historical data archiving and data access for different user groups are required. WebLog250 performs well in both energy metering systems and installations used to monitor heat, water and gas consumption.

Local operation via touchscreen and remote access through web server

One of the most important features of WebLog250 is the ability to work both locally and remotely. The device is equipped with a 7-inch color touchscreen with 800 × 480 px resolution, enabling convenient operation directly on site. This solution speeds up commissioning, diagnostics and daily use in technical facilities.

At the same time, WebLog250 provides full access through a web interface, so data reading and device management can be performed remotely from a standard internet browser. This approach greatly simplifies work for integrators, facility administrators and service companies that need quick access to metering data without visiting the device each time.

Data logging, archiving and export

WebLog250 stores data in its internal database, allowing a structured history of readings and a clear metering archive to be maintained. The device supports data export in CSV, XLSX and XML formats, and transfer can be performed manually or automatically according to a schedule. Data can be sent via e-mail, FTP or USB memory, offering strong flexibility when integrating with billing systems, energy management platforms and BMS environments.

In practice, this means less manual work, easier reporting and simpler transfer of data to other systems. For many investors and facility administrators, this is a key advantage because meter reading alone does not create real value without convenient export and further data use.

Communication interfaces and flexible integration

WebLog250 offers extensive communication options including Ethernet 10/100 Mbps, USB Host, USB Device and RS232C. In addition, optional Wi-Fi communication is available, which increases deployment flexibility in buildings where cabling is limited or not ideal.

Another practical advantage is its ability to operate as a transparent M-Bus level converter via USB or RS232C. This means WebLog250 can serve not only as a data logger, but also as a communication component that simplifies integration with supervisory systems and service workstations.

User management and practical system handling

In large metering installations, proper access management is extremely important. WebLog250 enables hierarchical user management, allowing different permission levels to be assigned to administrators, inspectors and tenants. This improves operational security and organizes data access in multi-user systems.

This type of functionality has real value in residential, commercial and public buildings, where metering data is used simultaneously by several groups of users. WebLog250 therefore not only collects data, but also helps manage it efficiently.

Industrial design and convenient mounting

WebLog250 features a durable ABS housing with IP52 protection, suitable for typical technical environments. The device can be wall-mounted or installed on a DIN rail TS35 using an optional mounting kit, which makes integration with control cabinets and building automation systems easier.

Another advantage is the integrated 110–250 VAC power supply, which simplifies installation and reduces the need for external power components. In practice, this means a more compact deployment and easier preparation of a complete metering system.

Product features

• M-Bus data logger for up to 250 meters,
• supports up to 1000 devices with external repeaters,
• integrated web server for remote browser-based operation,
• 7-inch color touchscreen, 800 × 480 px,
• data export in CSV, XLSX and XML formats,
• data transfer via e-mail, FTP or USB,
• Ethernet, USB Host, USB Device and RS232C,
• optional Wi-Fi module,
• hierarchical user management,
• IP52 housing and wall or DIN rail TS35 mounting.

Technical specification

• Model: WebLog250
• Device type: M-Bus data logger with web server
• Maximum number of M-Bus meters: 250
• Maximum number of devices with repeaters: 1000
• Local operation: 7-inch touchscreen, 800 × 480 px
• Remote access: web browser through integrated web server
• Internal memory: 1 GB
• Data export: CSV, XLSX, XML
• Data transfer methods: e-mail, FTP, USB
• Interfaces: Ethernet 10/100 Mbps, USB Host, USB Device, RS232C
• Optional connectivity: Wi-Fi
• Additional function: transparent M-Bus level converter via USB or RS232C
• Power supply: 110–250 VAC
• Housing: ABS, IP52
• Mounting: wall mounting or DIN rail TS35

WebLog250 is a very strong choice for projects where not only M-Bus meter reading is required, but also structured data archiving, convenient export, remote access and clear local operation. This device combines the functions of a metering central unit, web server and data logger in one consistent solution for professional installations.

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