6.2.3 Air pressure sensor #2 QBM97..
Slave address: 42
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.
BA-object / device register assignment
Actual I/O values
BAcnet object
R/W
Note
Register
Address
Function code
Differential pressure P1
DiffPP1(2)
AI,155
R
-3000…3000 Pa
5
03: Read holding
Pooling=4s
Differential pressure P2
DiffPP2(2)
AI,156
R
-3000…3000 Pa
7
03: Read holding
Pooling=4s
Analog input AI1
AInAI1(2)
AI,157
R
-40…80°C
21
03: Read holding
Pooling=16s
Analog input AI2
AInAI2(2)
AI,158
R
0…100.0%
51
03: Read holding
Pooling=16s
Analog output AO1
AOutAO1(2)
AO,145
R/W
0…100.0%
27
06: Write single
HB=20s / COV=2%
Analog output AO2
AOutAO2(2)
AO,146
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(2)
MVAL,788
R
BACnet reliability definitions
4
03: Read holding
Pooling=16s
Reliability of differential pressure
P2
DiffPP2Rlb(2)
MVAL,789
R
BACnet reliability definitions
6
03: Read holding
Pooling=16s
Reliability of analog input AI1
AInAI1Rlb(2)
MVAL,791
R
BACnet reliability definitions
20
03: Read holding
Pooling=16s
Reliability of analog input AI2
AInAI2Rlb(2)
MVAL,793
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(2)
MVAL,792
W
None / Pt1000 / LG-Ni1000 /
NTC10k / Ni1000
22
06: Write single
On change
Signal type of input AI2
AI2InSigTyp(2)
MVAL,794
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
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