MDT Technologies SCN-RTRGS.02, Техническое руководство

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Technical Manual
Glass Room Temperature Controller Smart SCN-RTRGx.02
MDT technologies GmbH • 51766 Engelskirchen • Papiermühle 1 • Germany
Phone: +49-2263- 880 • knx@mdt.de • www.mdt.de
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Example (set priority: Frost/Comfort/Night/Standby):
Operating mode Set operating mode
Comfort Night Frost/Heat protection
1 0 0 Comfort
0 1 0 Night
0 0 1 Frost/Heat protection
0 0 0 Standby
1 0 1 Frost/Heat protection
1 1 0 Comfort
Table 28: Example – Mode selection via 1 Bit
The mode selection via 1 byte is done via only one object, the DPT HVAC Mode 20.102 according to
the KNX specification. For mode selection, a hex value is sent to the " mode selection" object. The
object evaluates the received hex value and thus switches the associated operating mode on and
the previously active operating mode off. If all operating modes are switched off (hex value = 0), the
“ Standby ” operating mode is switched on.
The hex values for the individual operating modes can be taken from the following table:
Mode selection (HVAC Mode) Hex-Value
Comfort 0x01
Standby 0x02
Night 0x03
Frost/Heat protection 0x04
Table 29: Hex values of HVAC Modes
The following example illustrates how the controller processes received hex values and thus
switches operating modes on or off. The table is based on each other from top to bottom.
Example (set priority: Frost/Comfort/Night/Standby):
Received Hex value Processing Set operating mode
0x01 Comfort = 1 Comfort
0x03 Comfort = 0
Night = 1
Night
0x02 Night = 0
Standby = 1
Standby
0x04 Standby = 0
Frost/Heat protection = 1
Frost/Heat protection
Table 30: Example – Mode selection via 1 Byte
The controller always reacts to the last value sent. If, for example, an operating mode was last
selected via a 1-bit command, the controller reacts to the switchover via 1 bit. If a hex value was
last sent via the 1-byte object, the controller reacts to the switchover via 1 byte.
Important : There is no priority between switching over 1bit and 1byte!
The communication objects for the operating mode switchover are as follows:
Number Name/Function
Length Usage
15 Mode selection – Select mode 1 Byte Selection of operating modes
17 Comfort mode – Switch mode 1 Bit Activating the Comfort mode
18 Night mode – Switch mode 1 Bit Activating the Night mode
19 Frost/Heat protection mode –
Switch mode
1 Bit Activating the Frost/Heat protection mode
Table 31: Communication objects – Mode selection