This is a special interface protocol that have been (accidently) activated. Please check the DATA_INTERFACE parameter (at address 0x36). It may be an indication of the configuration memory has been corrupted when using the “M”command. Please ensure the re-configuration command is completed (prompt on TXD) before removing supply power or resetting the module.
Last Update: September 14, 2017
September 14, 2017 1659 Wireless M-Bus Q&A