Description

The module has specified serial data rates of up to 115.2 Kbps and radio data rates of 2.4, 4.8 and 19.2 kbps. For security, the wireless signal has AES and NRZ encryption. Output power is from 125 mW to 631 mV (28dBm). According to the vendor’s data sheet, the module has wireless range of up to 20 km.

Short for Meter-Bus, this protocol was designed for the remote reading of gas or electricity meters, but it’s also suitable for alarm systems, illumination installations, heating control and more.

M-BUS RF click communicates with the target MCU through the mikroBUS™ UART interface, with additional functionality provided by RESET, RTS, and CTS pins. The board is designed to use a 3.3 power supply only.

SPECIFICATION

Documentation

Features and usage notes

According to the vendor’s data sheet, the module has wireless range of up to 20 km (an external antenna is required).

Short for Meter-Bus, this protocol was designed for remote reading of gas or electricity meters in Europe, but it’s also suitable for alarm systems, illumination installations, heating control and more.

Devices that communicate with wireless M-Bus modules are classified as either meters or ‘other‘ devices. There is a total of six different M-Bus modes:

• Mode S ‘Stationary
• Mode T ‘frequent Transmit
• Mode R2 ‘frequent Receive
• Mode C ‘Compact
• Mode N ‘Narrowband VHF
• Mode F ‘Frequent receive and transmit

The working of all six modes is explained in detail in the learn.mikroe.com article on M-Bus.

Telit also provides a M-Bus guide which provides an Learn article explaining the MikroElektronika M-BUS library overview of the standard.