NEW LPC-2.MU0 | Remote I/O Main module, Modbus RTU
22. 8. 2025
LPC-2.MU0 Remote I/O Main module, Modbus RTU – expand your automation system with ease
The LPC-2.MU0 module operates as a Modbus RTU Slave (RS-485) device, providing a robust and flexible solution for remote expansion with configuration of Smarteh LPC-2 I/O modules. Designed for seamless integration, it is fully compatible with Smarteh LPC-2 PLCs, LPC-3 touch panels, and any other Modbus RTU Master devices.
Seamless communication & Scalable expansion
The LPC-2.MU0 module acts as a bridge between the Modbus RTU Master device and LPC-2 I/O configuration, enabling smooth and efficient data exchange.
LPC-2.MU0 module powers and connects up to 7 Smarteh LPC-2 I/O modules in one LPC-2 I/O configuration, ensuring flexibility on LPC-2 I/O modules selection and system-wide efficiency.
Whether you need to expand your LPC-2 I/O configuration, create remote I/O connections, or enhance system scalability, the LPC-2.MU0 Main module delivers unmatched flexibility and performance.
Up to 32 LPC-2.MU0 module I/O configurations can be connected to a Modbus RTU Master device, allowing centralized management of thousands of I/O signals.
Compact, reliable, and efficient
Designed with a slim, space-saving profile, the LPC-2.MU0 module is perfect for installations where space is limited. Powered by a 20–28 V DC external power supply, it ensures stable operation while four built-in LEDs provide instant status updates on power supply and Modbus RTU communication, enabling real-time device status monitoring.
SMARTEH VS. CONVENTIONAL REMOTE I/O SYSTEM EXAMPLE
Conventional remote I/O cabinet Smarteh remote LPC-2 I/O cabinet
Many Modbus RTU nodes One Modbus RTU node
➢ Price efficient solution for remote LPC-2 I/O modules:
49 € LPC-2.MU0 Remote I/O Main module, Modbus RTU
30 – 60 € LPC-2 Digital inputs (Voltage free , 24 V DC, 24 V AC, 230 V AC)
30 – 80 € LPC-2 Digital outputs (Relay, Transistor, Triac)
60 – 100 € LPC-2 Analog modules I/Os (0-10V, 4-20 mA, NTC, Pt1000, PWM output, … )
All prices are indicative RRP. For accurate pricing, please contact Smarteh sales at: sales@smarteh.si
➢ Reduced number of Modbus RTU nodes: Supports up to 7 LPC-2 I/O modules per LPC-2.MU0 and up to 32 LPC-2.MU0 per Modbus RTU Master module
➢ Faster data transfer and refresh rate
➢ LPC-2 I/O signal density: Centralizes > 1000 of LPC-2 I/O signals across multiple LPC-2.MU0 modules
➢ Power supply integration: LPC-2.MU0 module powers all connected LPC-2 I/O modules directly
➢ Ease of use: Fully integrated with the LPC-2 ecosystem—yet completely open.
KEY FEATURES & BENEFITS
📥 / 📤 Modbus RTU communication
RS-485 half-duplex serial port for Modbus RTU Slave communication, enabling reliable data exchange with Modbus RTU Master device.
⚙️ LPC-2 configuration I/O expansion
Easily extend your Modbus RTU Master automation system by connecting up to 32 LPC-2.MU0 modules with up to 7 LPC-2 I/O modules per each LPC-2.MU0 module configuration. This allows for expanded LPC-2 I/O configurations beyond the standard Smarteh 7 LPC-2 I/O modules, providing additional functionality for complex control environments.
📡 Remote LPC-2 I/O connection
LPC-2.MU0 module enables remote LPC-2 I/O configurations to connect with LPC-2 PLCs or LPC-3 touch panels or any other Modbus RTU Master device via Modbus RTU over RS-485, ideal for distributed control systems.
🎛️ Termination Switch (S1)
RS-485 termination switch for easy configuration of signal termination with an internal 1.2 kΩ resistor to ensure stable RS-485 network communication.
📦 Compact design
Features a slim and compact design, making it perfect for installation in tight spaces or environments with limited room.
🔲 DIN rail mounting
Designed for DIN EN50022-35 rail mounting, allowing for quick and secure installation in control panels and enclosures.
🔌 Power supply
LPC-2.MU0 module is powered by an external 20 to 28 V DC power supply, ensuring stable operation also for all connected LPC-2 I/O modules.
⚡ Power supply output
Provides a 15V output for powering additional connected modules, simplifying system wiring.
💡 Diagnostic LED indicators
Equipped with four LED indicators to show RS-485 communication and power status (RS-485 Rx/Tx, communication status, power supply), enabling quick troubleshooting.
USE CASE EXAMPLES
Remote LPC-2 I/O connection
The LPC-2.MU0 module enables the connection of remote LPC-2 I/O module configurations to either the LPC-2 PLC (see Figure 1) or the LPC-3 touch panel (see Figure 2) via Modbus RTU over RS-485 network.
Figure 1: Example of remote connection of LPC-2 I/O configuration to LPC-2 PLC
Figure 2: Example of remote connection of LPC I/O configuration to LPC-3 touch panel
LPC-2 configuration I/O expansion
The LPC system supports seamless LPC-2 I/O expansion in situations where the enclosure lacks sufficient space for additional LPC-2 I/O modules (see Figure 3), or when more than 7 standard LPC-2 I/O modules are required in a single configuration (see Figure 4).
The LPC-2.MU0 Main module is connected externally and communicates with the Modbus RTU Master device via Modbus RTU over RS-485.
This robust industrial protocol ensures reliable data exchange even in demanding environments.
Figure 3: Example of expansion for small spaces
Figure 4: Example of expansion for > 7 LPC-2 I/O modules
LPC-2.MU0 REMOTE I/O MAIN MODULE CONFIGURATION TOOL
Smarteh LPC-2.MU0 Remote I/O Main module, Modbus RTU Configuration tool is designed to generate Modbus RTU registers for selected Smarteh LPC-2 I/O modules connected to the LPC-2.MU0 Remote I/O Main module, Modbus RTU: LINK FOR DOWNLOAD
Step 1: Set the LPC-2.MU0 I/O module configuration
➢ Select LPC-2 I/O modules from the drop-down list of available LPC-2 I/O modules in cells F10:L10
The LPC-2.MU0 module configuration can include up to Smarteh 7 LPC-2 I/O modules. If not all 7 LPC-2 I/O modules are used in the configuration, set unused slots to “NOT USED”.
➢ Once the configuration is set, click the “CONFIGURE” button to generate a list of all available Modbus RTU registers and their associated properties for the current configuration.
Step 1: Set the LPC-2.MU0 I/O module configuration
Step 2: Export the LPC-2.MU0 I/O module configuration to .PDF and/or .XLSx file
Once the LPC-2.MU0 I/O module configuration is set, click the “CONFIGURE” button to generate a list of all available Modbus RTU registers and their associated properties for the current configuration.
➢ Use the “EXPORT TO PDF” and/or “EXPORT TO XLSX” buttons to export the configuration and its Modbus registers to a new file. The exported file will be ready for printing or further processing.
Note: The configuration must be set before exporting to ensure that the correct Modbus RTU registers are included.
➢ Click the “RESET CONFIGURATION” button to clear all Modbus RTU registers and reset the configuration, i.e. before creating a new one.
Step 2: Export the LPC-2.MU0 I/O module configuration to .PDF and/or .XLSx file
Step 3: PLC programming
Incorporate the Modbus RTU registers generated for the LPC-2.MU0 module into your PLC logic using the Smarteh IDE or any other compatible Modbus RTU Master device control system.
Step 3: PLC programming
NEW LPC-2.MU0 | Remote I/O main module, Modbus RTU presentation:
https://www.smarteh.com/wp-content/uploads/2020/12/lpc-2-mu0-remote-io-main-module-modbus-rtu.pdf
NEW LPC-2.MU0 | Remote I/O main module, Modbus RTU user manual:
https://www.smarteh.com/wp-content/uploads/2020/12/225mu024001001_lpc2_mu0_usrman.pdf
LPC-2.MU0 Remote I/O Main module, Modbus RTU Configuration tool download:
https://www.smarteh.com/support-downloads/software-firmware/development-tools/setups-installers/
LPC-2 Main modules product overview:
https://www.smarteh.com/products/building-automation-product-line/lpc-2-programmable-controllers/main-modules/
We welcome your inquiries at sales@smarteh.si