===== B5h 11h 01h - Operational Data of Burner Control Unit to Room Control Unit =====

^Master/ Slave Byte-No. ^Abbrev. ^Description ^Unit ^Range ^Type/ [Res.] ^Repl. Value ^Note ^
|M1 |QQ |Source address |  |  |  |  |  |
|M2 |ZZ |Target address |  |  |  |  |  |
|M3 |PB = B5h |Vaillant command |  |  |  |  |  |
|M4 |SB = 11h |Operational Data |  |  |  |  |  |
|M5 |NN = 01h |Length of data |  |  |  |  |  |
|M6 |01h |Block number |  |  |  |  |  |
|M7 |CRC |  |  |  |  |  |  |
|S1 |ACK |  |  |  |  |  |  |
|S2 |NN = 09h |Length of data |  |  |  |  |  |
|S3 |VT |Lead water temperature (Vorlauf-/ Anlagentemperatur) |°C |0 – 100 |DATA1c |  |  |
|S4 |NT |Return water temperature (Nachlauftemperatur) |°C |0 – 100 |DATA1c |  |  |
|S5 |TA_L |Outside temperature |°C |-50,0 – 50,0 |DATA2b [1/256] |  |  |
|S6 |TA_H | ::: | ::: | ::: | ::: | ::: | ::: |
|S7 |WT |(WW-Auslauftemperatur) |°C |0 – 100 |DATA1c |  |  |
|S8 |ST |Service water temperature (WW-Speichertemperatur) |°C |0 – 100 |DATA1c |  |  |
|S9 |vv |Bit 0: Heating \\ Bit 1: Service Water |  |  |BIT |  |0 = OFF \\  \\ 1 = ON |
|S10 |xx<sub>1</sub>  \\  |  |  |  |  |  |unknown, always 00h |
|S11 |xx<sub>2</sub>  \\  |  |  |  |  |  |unknown, always FFh |
|S12 |CRC |  |  |  |  |  |  |
|M8 |ACK |  |  |  |  |  |  |
|M9 |SYN |  |  |  |  |  |  |

===== B5h 11h 02h - Operational Data of Burner Control Unit to Room Control Unit =====

^Master/ Slave Byte-No. ^Abbrev. ^Description ^Unit ^Range ^Type/ [Res.] ^Repl. Value ^Note ^
|M1 |QQ |Source address |  |  |  |  |  |
|M2 |ZZ |Target address |  |  |  |  |  |
|M3 |PB = B5h |Vaillant command |  |  |  |  |  |
|M4 |SB = 11h |Operational Data |  |  |  |  |  |
|M5 |NN = 01h |Length of data |  |  |  |  |  |
|M6 |02h |Block number |  |  |  |  |  |
|M7 |CRC |  |  |  |  |  |  |
|S1 |ACK |  |  |  |  |  |  |
|S2 |NN = 05h |Length of data |  |  |  |  |  |
|S3 |xx<sub>1</sub>  \\  |  |  |  |  |  |unknown, always 03h |
|S4 |xx<sub>2</sub>  \\  |  |  |  |  |  |unknown, always 3Ch |
|S5 |xx<sub>3</sub>  \\  |  |  |  |  |  |unknown, always 96h |
|S6 |xx<sub>4</sub>  \\  |  |  |  |  |  |unknown, always 46h |
|S7 |ST |Service water target temperature |°C |0 – 100 |DATA1c |  |  |
|S8 |CRC |  |  |  |  |  |  |
|M8 |ACK |  |  |  |  |  |  |
|M9 |SYN |  |  |  |  |  |

\\