eBus WIKI

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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	Outside temperature	°C	-50,0 – 50,0	DATA2b [1/256]
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	xx₁						unknown, always 00h
S11	xx₂						unknown, always FFh
S12	CRC
M8	ACK
M9	SYN

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	xx₁						unknown, always 03h
S4	xx₂						unknown, always 3Ch
S5	xx₃						unknown, always 96h
S6	xx₄						unknown, always 46h
S7	ST	Service water target temperature	°C	0 – 100	DATA1c
S8	CRC
M8	ACK
M9	SYN