Register Overview
The registers are used for parameterization the M-Bus master terminal. They can be read or written by means of the register communication.
Register no. | Comment | Default value | R/W | Memory | |
|---|---|---|---|---|---|
Number of data bytes in the send buffer | variable | variable | R | RAM | |
Number of data bytes in the receive buffer | variable | variable | R | RAM | |
R2 | Number of parity errors | 0x0000 | 0dec | R | - |
R3 | Number of framing errors | 0x0000 | 0dec | R | - |
R4 | reserved | 0x0000 | 0dec | R | - |
R5 | reserved | 0x0000 | 0dec | R | - |
Diagnostic register | variable | variable | R | RAM | |
Command register | 0x0000 | 0dec | R/W | RAM | |
Terminal type | 0x1A7D | 6781dec | R | ROM | |
Firmware version | variable | variable | R | ROM | |
R10 | reserved | 0x0000 | 0dec | - | - |
... | ... | ... | ... | ... | ... |
R15 | reserved | 0x0000 | 0dec | - | - |
R16 | Hardware version | e.g. 0x0000 | e.g.: 0dec | ... | EEPROM |
R17 | reserved | 0x0000 | 0dec | - | - |
... | ... | ... | ... | ... | ... |
R18 | reserved | 0x0000 | 0dec | - | - |
Terminal type - special identification | 0x0000 | 0dec | R | EEPROM | |
R30 | reserved | 0x0000 | 0dec | R/W | RAM |
Code word register | 0x0000 | 0dec | R/W | RAM | |
Baud rate register | 0x0004 | 4dec | R/W | EEPROM | |
R33 | reserved | 0x0000 | 0dec | R/W | - |
... | ... | ... | ... | ... | ... |
R63 | reserved | 0x0000 | 0dec | R/W | - |