MDT KNX SCN-RT1UP.01 Technical Manual page 21

Technical Manual – Room Temperature Controller SCN-RT1
The DPT RHCC Status object is an additional 2 Byte status object with additional status messages. If
more than one testify is valid, also here the values will be added in the same way as at the HVAC
object.
The following chart shows the hex values for the single messages:
Bit
0
8
13
14
Table 21: Hex-Values DPT RHCC Status (from Version 1.2)
The Controller reacts always to the value, which was sent last. If you switched the operating mode
last via 1 Bit, the controller will react to the switchover by 1 Bit. If you switched the operating mode
last via 1 Byte, the controller will react to the switchover by 1 Byte.
The communication objects for the mode selection are shown at the following chart. The first 3
communication objects are for the 1 Bit switchover, the last 3 objects are for the switchover via 1
Byte:
Number Name
11 Mode Comfort
12 Mode Night
13 Mode Frost/Heat protection
25 DPT_HVAC Status*
30 DPT_RHCC Status*
31 mode selection*
Table 22: Communication objects for the operating mode switchover
* from Version 1.2
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DPT RHCC Status
Error Sensor 1=Error
Heating/Cooling 0=Cooling/1=Heating
Frost alarm 1=Frost alarm
Heat alarm 1=Heat alarm
Length
1 Bit
1 Bit
1 Bit
1 Byte
2 Byte
1 Byte
Hex-Value
0x01
0x100
0x2000
0x4000
Usage
Activation of the mode comfort
Activation of the mode night
Activation of the mode Frost/ Heat protection
Visualization of the chosen operating mode
Visualization measuring/ status of the controller
Selection of the operating mode