Technical Manual
–
Central Operation Unit Smart
MDT technologies GmbH •
51766 Engelskirchen • Papiermühle 1
Phone: +49-2263-
880 • Fax: +49-2263-4588 • [email protected] • www.mdt.de
75
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However, please note that the settings for the minimum / maximum value for the day / night
operation are priorities and can limit the settings for the output.
The following table shows the communication object for the step switch as Byte:
Number
Name
Length
Usage
182
Ventilation control - Control value
1 Byte
Control value for an actuator
Table 71: Communication object - Step switch as Byte
All other functions are identical to those described in
4.8.4.1 Step switch bit-coded
.
4.8.4.5 External Control (Slave)
At the external control, the glass central operation unit works as slave, that means as display and
switch for the ventilation control. The calculation of the current ventilation level is done from
another KNX-device.
The following settings are available:
ETS-Text
Dynamic range
[Default value]
Comment
Total number of steps
2 - 4
[4]
Defines the number of steps (for the
visualization on a display)
Table 72: Settings - External control (Slave)
At the operating mode „external control (Slave)“ the current ventilation level is set via the object .
The Central operation unit works only as switch and display for the FanCoil control.
The following table shows the available communication objects for the external control:
Number Name
Length Usage
181
Input: 1 Byte current ventilation
level
1 Byte
Input for setting the current ventilation level
184
Input and Output: Switch
Automatic
1 Bit
Switchover and display of the mode
185
Output: Control ventilation levels
manually (+/-)
1 Bit
Sending of Up/Down commands for the master
Table 73: Communication Objects - External control (Slave)