Technical Manual
Glass Room Temperature Controller Smart SCN-RTRGx.02
MDT technologies GmbH •
51766 Engelskirchen • Papiermühle 1
•
Germany
Phone: +49-2263-
880 • [email protected] • www.mdt.de
98
98
Switchover considers
status object
▪
not active
▪
active
Setting whether to perform shifting
according to the current status.
Not for shift via 1 bit.
Repeated sending at
pressed key
not active,
200 ms
–
3 s
[1 s]
Activating the send repetition while
the button is pressed.
Table 106: Settings
–
Buttons 3/4: Temperature shift as extension unit
Functional principle:
This function shifts the current setpoint within the set limits. When the “
-
“ button is pressed, the
setpoint is sent
subtracted from the last value by the set increment, and when the “+” button is
pressed, it is sent added to the last value by the set increment.
Upper/lower limit:
The value is shifted within these limits. The function never falls below the lower limit value and
never exceeds the upper limit value.
Step size:
The step size indicates the distance between two transmitted telegrams. For example, with a step
size of 0.5 K and a setpoint value of 21°C, pressing the "-" key would cause 20.5°C and set to
21.5°C when the "+" key is pressed.
Switchover considers status object:
If the
status value is not considered
when switching over, the device remembers the last value
sent and sends the next or previous value the next time it is pressed, regardless of whether another
value has been sent to the object in the meantime.
If the
status value is considered
in the changeover, the device sends the next higher or next lower
changeover value
–
with reference to the last received status value
–
the next time it is pressed. If,
for example, the value "1K" was sent when the last key was pressed and then the value "2K" was
sent from another location, the value "2.5K" is sent the next time the "+" key is pressed.
Important:
The temperature shift is implemented via the objects of the controller. There are no
communication objects for the buttons 3/4.
The following communication objects on the controller are available here:
Number Name/Function
Length Usage
0
Setpoint setting
–
Set setpoint
2 Byte Setting of an absolute value.
Only with “2byte temperature setting”
7
Manual setpoint shift
1 Byte Increase/decrease (1Byte)
7
Manual setpoint shift
2 Byte Increase/decrease (2Byte)
8
Manual setpoint shift
1 Bit
Increase/decrease (1=+ /0=-)
9
Status setpoint shift
–
Receive status 1 Byte
2 Byte
Receiving the current status.
DPT depending on parameter setting.
Table 107: Communication objects
–
Buttons 3/4: Temperature shift as extension unit
