EMBEDDED SYSTEMS LM5Lp2 LogicMachine5 KNX Server | Lite Power

Whether smart home, commercial property or industrial facility: With the devices of the LM5 series from Embedded Systems, you get a platform that is not only powerful but also exceptionally flexible. Each model is a specialist – from the compact Lite version to the fully equipped RIO variant with extensive I/Os. KNX, Modbus, BACnet, CANx, DALI, MQTT, cloud connectivity, visualisation, logic engine – all included, all open. For system integrators, developers and technology enthusiasts, the LM5 series is the tool that not only makes projects possible but excellent.

• Article type: Logic server
• Manufacturer: Embedded Systems
• Controls and indicators: Status LED, reset button, multifunction button (model-dependent)
• Network connectivity: 10/100 Mbit/s Ethernet with automatic connection check, passive PoE support
• Supported network protocols: KNXnet/IP, Modbus RTU/TCP, BACnet/IP, DALI, DMX, M-Bus, EnOcean, MQTT, HTTP, TCP/IP, UDP/IP
• KNX connections: 1 x KNX TP1 (TP-UART2), KNX routing and tunnelling
• Mounting: DIN rail mounting
• Module widths: 3–6 modules depending on model
• KNX medium: Twisted pair (KNX TP1)
• Connections: KNX TP bus, Ethernet RJ45, USB 2.0, RS485, RS232, DALI, 1-Wire (model-dependent)
• Power supply: 24 V DC or PoE
• Power consumption: Typically 1.3 W, max. approx. 3 W
• Environmental conditions: Operating temperature -5...+45°C, relative humidity 5...93% (non-condensing)
• Included in delivery: LogicMachine5 Lite Power, installation manual, device label with serial number

Feature	Lite Power (LM5Lp2)	Lite Power CANx (LM5CLp2)
KNX interface	KNX TP1	KNX TP1
CANx support	Not available	Yes, with CAN FT interface
Protocols	KNX, Modbus RTU/TCP, BACnet/IP, DALI, EnOcean, DMX, M-Bus	KNX, Modbus, BACnet, CANx, DALI, EnOcean, DMX, M-Bus
Cloud compatibility	Azure, AWS, MQTT	Azure, AWS, MQTT
Logic engine	Lua-based, graphical interface	Lua-based, graphical interface
Visualisation	Web interface, responsive design	Web interface, responsive design
App store & development	Yes	Yes, including CANx commissioning
Voice control	Siri, Google Assistant	Siri, Google Assistant
Size	3 DIN modules	3 DIN modules
Special features	Focus on classic KNX installations	Extended integration for CANx systems
Target group	Smart home, small to medium buildings	Industry, complex building automation

The LM5Lp2 from Embedded Systems is a compact yet powerful KNX server that is excellent for demanding automation tasks. Inside, an efficient ARM processor works, offering significantly more computing power than previous models. This allows even complex logics and visualisations to be executed without delay. The hardware is robust and designed for continuous operation, making it particularly interesting for professional installations.

The connection options are diverse: Ethernet, USB, KNX TP1, RS485 and RS232 are available. These interfaces enable communication with a wide range of devices and systems. Power supply is via Power-over-Ethernet, simplifying installation and making additional power supplies unnecessary. An automatic network check ensures connection issues are detected early.

The LM5Lp2 supports numerous protocols, including KNX, Modbus RTU/TCP, BACnet/IP, DALI, EnOcean, DMX and M-Bus. This means the server can be integrated not only into classic KNX installations but also into systems from industrial and HVAC technology. Communication with cloud services such as Azure or AWS is also possible, paving the way for remote maintenance and IoT applications.

Configuration is done via a web-based interface that is easy to use on both desktop computers and mobile devices. The user guidance is clearly structured, so even less experienced users can quickly find their way around. For professionals, advanced functions and interfaces are available, for example for app development or integration of external APIs.

Logic and automation: Flexibility for every application

The logic engine of the LM5Lp2 is a central element for automation. It allows the creation of sequences based on time, events or states. Simple rules can be created via a graphical interface, while more complex scenarios can be programmed directly in Lua. Lua is a lightweight scripting language well suited for embedded systems and powerful enough to solve demanding tasks.

A typical example would be controlling outdoor lighting depending on the sun position and presence in the building. Such scenarios can not only be logically linked but also provided with conditions, such as wind speed or temperature. The logic can access internal data, sensor readings or external sources such as weather services.

The engine also supports mathematical calculations, state machines and processing of JSON data. This makes it especially suitable for applications where many parameters must be considered. The results of these logics can be directly incorporated into the visualisation or passed on as control commands to other systems.

For developers, the LM5Lp2 offers an open platform on which their own applications can be installed and maintained. Functions such as MQTT communication, REST interfaces or voice control via Siri and Google Assistant can be easily integrated. The app management is clear and also allows distribution of applications across multiple devices.

Visualisation and operation: Clarity and control

The graphical interface of the LM5Lp2 is designed to be both functional and user-friendly. After login, a dashboard appears that clearly displays all important information and functions. The interface can be customised individually, for example with own colours, icons or layouts. The language can also be freely selected.

The visualisation allows the display of rooms, devices and scenes. Lighting, heating, blinds or security systems can be operated intuitively. The display is responsive, optimised for different screen sizes. This is particularly practical when control is to be done via tablets or smartphones.

For data analysis, the LM5Lp2 offers an integrated logging system. Object values can be recorded over defined periods and displayed graphically. This allows consumption values to be analysed, trends to be recognised or error sources to be identified. Alarm messages and system events are also logged and can be exported if required.

User management allows setting up roles with different rights. For example, a technician can be given full access to all functions, while a resident may only control certain areas such as lighting or temperature. Security is ensured by encrypted connections, VPN support and the possibility to install own certificates.

Areas of application and integration: From single-family home to commercial complex

The LM5Lp2 is versatile and suitable for both private and commercial applications. In smart homes, it takes over central control of lighting, heating, shading and security. Integration into voice control systems such as Apple HomeKit, Google Home or Amazon Alexa makes operation particularly comfortable.

In larger buildings such as offices, hotels or industrial plants, the server can take on tasks such as energy management, room automation or access control. Support for protocols like BACnet and Modbus enables connection to HVAC systems, meters and industrial controllers. Remote maintenance is also possible, allowing changes or updates to be carried out without on-site presence.

For system integrators and developers, the LM5Lp2 offers an open and documented platform. The combination of logic, visualisation and protocol variety makes it a powerful tool for individual solutions. Whether as a data logger, control centre or visualisation server – the LM5Lp2 adapts flexibly to requirements and grows with the project.

Overview of all LM5 models:

Model	KNX TP1	CANx	PoE	RS-485	RS-232	DALI	1-Wire	I/Os	DIN width
LM5LP2	✔	–	✔	1x	1x	–	–	–	3 DIN
LM5CLP2	✔	✔	✔	1x	1x	–	–	–	3 DIN
LM5p-PMC	✔	–	✔	1x	1x	–	–	–	4 DIN
LM5p-DW1	✔	–	✔	1x	1x	2x	2x	–	4 DIN
LM5p-DR	✔	–	✔	2x	1x	2x	–	–	4 DIN
LM5p-RIO2	✔	–	✔	1x	1x	–	1x	16x AI/DO, 2x AO	6 DIN
LM5p-RIO2E	✔	–	✔	1x	1x	–	1x	16x AI/DO, 2x AO	6 DIN
LM5p-RD	✔	–	✔	2x	1x	2x	1x	8x AI/DO, 3x AO	6 DIN
LM5p-RDE	✔	–	✔	2x	1x	2x	1x	8x AI/DO, 3x AO	6 DIN
LM5p-RIOLC	–	✔	✔	1x	1x	–	–	16x IO, 6x DI	6 DIN