The W-Modbus system replaces traditional Modbus RTU cabling with a reliable wireless mesh network that removes the need for complex installation planning, physical cabling, daisy-chaining, and troubleshooting. This solution allows building automation systems to become wireless while maintaining full Modbus RTU compatibility and low communication latency. Its plug-and-play operation eliminates programming requirements, enabling quick deployment and straightforward integration into existing infrastructures. By shifting to wireless communication, users can achieve faster setup, reduced maintenance demands, and greater flexibility when expanding or reconfiguring control systems—all while contributing to sustainability goals and optimizing energy use through wireless control.
The W-Modbus product functions as a wireless proxy for connected Modbus RTU devices, effectively extending the communication bus and transforming wired products into wireless ones. Each W-Modbus network comprises a single W-Modbus Gateway connected to a Modbus Client via a Modbus RTU cable, alongside up to 100 W-Modbus Nodes. Each Node connects to a Modbus Server over a standard RTU cable, enabling large-scale installations that can be expanded or modified without adding new cabling runs. The system architecture ensures robust device-to-device communication across a wireless mesh that can cover an entire facility through multiple hops, maintaining stable and consistent data transfer even in complex indoor environments.
Built on LumenRadio’s patented MiraMesh technology, W-Modbus delivers industrial-grade reliability and outstanding connectivity across multiple devices. MiraMesh enables concurrent Bluetooth functionality, extended communication range, and automatic mesh optimization, ensuring the network continuously identifies the most efficient communication paths between devices. Its Cognitive Coexistence technology safeguards against interference by dynamically adapting to surrounding wireless signals, guaranteeing dependable performance in busy radio environments. This self-optimizing mesh structure reduces downtime, minimizes maintenance requirements, and provides consistent performance across an entire building or industrial site.
The W-Modbus solution supports modular configuration, allowing different baud rates for each connected device instead of requiring uniform settings across the entire network. This flexibility simplifies integration in environments where various equipment generations or manufacturers coexist. The system’s scalability allows the connection of up to 100 Modbus Servers to a single Client, with each hop extending wireless coverage up to 500 meters in line-of-sight conditions—or approximately 50 to 70 meters indoors depending on wall density. The compact, durable housing (W86.0 x H86.0 x D25.5 mm) is constructed from flame-retardant ABS UL94-V0 material and rated to IP40 protection, ensuring safe use in indoor industrial and commercial applications.
Operating within the 2.45 GHz ISM band (2400–2483 MHz), the W-Modbus supports baud rates of 9600, 19200, 38400, and 76800 bps, with one or two stop bits and selectable parity (none or even). It runs on 24 VAC ±15% (50–60 Hz) or 24 VDC ±15% power input, with a maximum consumption of 2.5 W and a 24 V output delivering up to 10 W. An auto-resettable fuse adds protection against power surges. The device withstands ambient operating temperatures from –20°C to +55°C and storage temperatures from –30°C to +80°C, with a relative humidity range of 10–95% non-condensing. Compact and lightweight at only 95 grams, W-Modbus units are easy to install and integrate in space-constrained environments, with push-in terminals suitable for solid or stranded conductors ranging from 0.14 to 0.5 mm² (AWG 24–20).
Together, these attributes make LumenRadio’s W-Modbus an ideal choice for modern building automation systems seeking to replace wired Modbus RTU networks with flexible, scalable, and reliable wireless connectivity. It delivers a future-ready infrastructure capable of adapting to growing device counts and changing layouts while maintaining Modbus protocol integrity and seamless communication performance throughout the network.
https://lumenradio.com/products/w-modbus/
