6.2.2 Air pressure sensor #1 QBM97..
Slave address: 40 (factory default)
Notes
● The slave address must be set with dip switches.
● The first QBM97 must have slave address 40.
● Verify the DIP settings on the QBM97 as per the description on the QBM97
cover.
BACnetobject / device register assignment
Actual I/O values BACnet object R/W Note Register
address
Function code
Differential pressure P1 DiffPP1(1)
AI,114
R -3000…3000 Pa 5 03: Read holding
Pooling=4s
Differential pressure P2 DiffPP2(1)
AI,115
R -3000…3000 Pa 7 03: Read holding
Pooling=4s
Analog input AI1 AInAI1(1)
AI,116
R -40…80°C 21 03: Read holding
Pooling=16s
Analog input AI2 AInAI2(1)
AI,117
R 0…100.0% 51 03: Read holding
Pooling=16s
Analog output AO1 AOutAO1(1)
AO,140
R/W 0…100.0% 27 06: Write single
HB=20s / COV=2%
Analog output AO2 AOutAO2(1)
AO,141
R/W 0…100.0% 57 06: Write single
HB=20s / COV=2%
I/O reliability & control BACnet object R/W Note Register
address
Function code,
Polling /
heartbeat / COV
Reliability of differential
pressure P1
DiffPP1Rlb(1)
MVAL,636
R BACnet reliability definitions 4 03: Read holding
Pooling=16s
Reliability of differential
pressure P2
DiffPP2Rlb(1)
MVAL,637
R BACnet reliability definitions 6 03: Read holding
Pooling=16s
Reliability of analog input AI1 AInAI1Rlb(1)
MVAL,639
R BACnet reliability definitions 20 03: Read holding
Pooling=16s
Reliability of analog input AI2 AInAI2Rlb(1)
MVAL,641
R BACnet reliability definitions 50 03: Read holding
Pooling=16s
Setting BACnet object R/W Note Register
address
Function code
Polling /
heartbeat / COV
Signal type of input AI1 AI1InSigTyp(1)
MVAL,640
W None / Pt1000 / LG-Ni1000 /
NTC10k / Ni1000
22 06: Write single
On change
Signal type of input AI2 AI2InSigTyp(1)
MVAL,642
W None / 0…10V 52 06: Write single
On change
For additional information, refer to the QBM97.. datasheet, see
"Documentation and short description of compatible devices [➙12]".
Engineering of communicative devices
Modbus components
6
148 | 170 A6V10733786_en_c
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