Communication with M-Bus2CMC48001M0201 285 A43/A44Revision: C User Manual10.5.22 Reset power outage timeReset of power outage time is performed by sending the following command(all values are hexadecimal). The command is not affected by the writeprotection level set.Byte No. Size Value Description1 1 68 Start character2 1 07 L-field, calculated from C field to last user data3 1 07 L-field, repeated4 1 68 Start character5 1 53/73 C-field, SND_UD6 1 xx A-field, address7 1 51 CI-field, data send, LSB first8 1 00 DIF size, no data9 1 FF VIF next byte is manufacturer specific10 1 EC VIFE power outage time11 1 07 VIFE clear12 1 xx CS checksum, calculated from C field to last data13 1 16 Stop character10.5.23 Send passwordPassword is sent with the following command (all values are hexadecimal).Byte No. Size Value Description1 1 68 Start character2 1 0E L-field, calculated from C field to last user data3 1 0E L-field, repeated4 1 68 Start character5 1 53/73 C-field, SND_UD6 1 Xx A-field, address7 1 51 CI-field, data send, LSB first8 1 07 DIF size, 8 byte integer9 1 FD VIF extension of VIF codes10 1 16 VIFE password11-18 8 xxxxxxxxxxxxxxxx Password19 1 xx CS checksum, calculated from C field to last data20 1 16 Stop character10.5.24 Set passwordPassword is set by sending the following command (all values are hexadecimal).Note – If the meter is password protected the old password must be sent before a newcan be set.
