UM1759 datasheet(47/50 Pages) STMICROELECTRONICS

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UM1759

Running the Wireless M-Bus application

displays the concentrator database in “Edit Meter” section. The concentrator database

contains Meter IDs and corresponding encryption keys.

By default values (Meter ID and Encryption Key) for three meters are stored in concentrator

database. If encryption is enabled and any of these three meters comes online the

concentrator will talk to them using encryption key allotted to them. Same encryption keys

are also preset in meter firmware for:

DEVICE_METER_TYPE = 0x02 (Electricity meter)

DEVICE_METER_TYPE = 0x03 (Gas meter)

DEVICE_METER_TYPE = 0x04 (Heat meter)

Concentrator database can contain values (Meter ID and Encryption Key) for ten meters at

most.

User can add a new meter to concentrator database by using “Add Meter” section. User

must enter meter ID, device type, encryption key, entry no. (entry no. corresponds to

sequential EEPROM addresses of concentrator data base). After entering all details for

meter, “Add” button should be pressed.

Figure 35. A view of concentrator database

UM1759 Datasheet(PDF) 47 Page - STMicroelectronics