Title: DOCA0005EN-12.pdf
Chapter 7 Communications via M-BusM-Bus communications overviewM-Bus is a master / slave communications protocol where the master initiates transactions and the slave(s) respond with the requested information or action. Data is transferred using hexadecimal telegrams.Communications via M-Bus protocol is available on the iEM3135, iEM3235 and iEM3335.The information in this section is intended for users with an advanced understanding of M-Bus protocol, their communications network and their power system.Configuring basic communications settingsBefore communicating with the meter via M-Bus protocol, use the HMI to configure the following settings:SettingPossible values300600Baud rate1200240048009600Primary address1–250NOTE: For M-Bus communication, the device consumes 2 standard loads (2 Unit Loads or 2UL).Key termsTermDefinitionC-Field