ABB i-bus KNX Product Manual page 210

®
ABB i-bus KNX
Commissioning
No.
4
The status byte reflects the current state of the input.
If the option Yes has been selected for the parameter Enable communication object "Request status values" 1-bit, the
communication objects no. 4, 18, 28, 38 and 48 are sent immediately. For all other status objects, e.g. for the fan, it is also
possible to use parameters to set the time when each of them is to be sent to the bus.
For further information see:
208 2CDC508134D0202 | FCA/S 1.x.x.1
Functionality
Status byte
Bit sequence
Bit 7: Heating or cooling mode (only in fan coil valves)
0:
1:
Bit 6: Not assigned
Bit 5: Not assigned
Bit 4: Status of internal calibration
0:
1:
Bit 3: Communication
0:
1:
Note
In the event of a fault "Internal communication fault", no values are sent if the option After request is
selected
Bit 2: Status Input c Measured value out of range
0:
1:
Bit 1: Status Input b Measured value out of range
0:
1:
Bit 0: Status Input a Measured value out of range
0:
1:
Status byte General, p. 256
communication object name
General
76543210
Cooling mode
Heating mode
Always 0
Always 0
Calibration completed
Calibration running
Communication is OK
Communication is disrupted
in range
out of range
in range
out of range
in range
out of range
Data type Flags
1 byte C, R, T
none DPT