Siemens Climatix S300 HRV Application Manual page 163

A6V10733786_en_c
Status flags:
● Read only bitset with BACnet encoding of status flags
'In-Alarm', 'Fault', 'Overridden' and 'Out-of-Service' in case of Modbus read
response.
● Void field (0;0;0;0) in case of Modbus write request to be
ignored by the Modbus Slave BA adapter.
b3 b2
● b0: In Alarm
● b1: Fault
● b2: Overridden
● b3: Out of service
Status flag is an exception, see table below with a comparison on parameters read
from Modbus and BACnet.
Object and property
O&M
Device
Schedule
● Cmd: Multistate command in combination with priority field (for BA output
objects and process value objects only) for commanding / writing present value
– Cmd = 0: Ready
– Cmd = 1: Command new value
– Cmd = 2: Relinquish
Engineering of communicative devices
b1 b0
Status flags
basic Present value
Present value
status flag
extend
priority
reliability
System-Status
(0:operational;
2:download required)
Local-Date
Local-Time
Equipment-ID
Serial-Number
Model-Information
Firmware-Revision
Application-Software-
Version
Supported-Languages
MODBUS-Session-
Language
Entry
Schedule default
present value
status flag
reliability
6
Modbus slave
Comparison
Same value
Same value
Bit swapped
Same value
Same value
Same value
Same value
Same value
Same value
Same value
Same value
Same value
Same value
Same value
Same value
Same value
Same value
Same value
Same value
Bit swapped
Same value
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