With the function “Logic operations” the input signal physically arriving at the input from a switch or sensor can be linked to one or two further signals received via the bus.
The prerequisite for this function is that the "Single” option is selected in the device settings for the channel concerned.
“Function of channels A + B” parameter
The following logical operators are available for operations:
- AND
- OR
- XOR
- FILTER
- TRIGGER
Two logic operations are available per input. The switching value at the physical input of the respective channel forms the first input of the logic operation. The communication object "A Logic operation 1” is available for the second input of the logic operation. The communication object can be linked to other sensor outputs, status objects or switching presets via group addresses. The result of this logic operation is sent to the bus via the "A Logic operation 1 output” communication object.
If a second logic operation is configured, the logical output value of the first logic operation acts as the input for the second logic operation. The communication object "A Logic operation 2” is available for the second input of logic operation 2. The communication object can be linked to other sensor outputs, status objects or switching presets via group addresses. The result of this logic operation is sent to the bus via the "A Logic operation 2 output” communication object.
Application examples
Alarm signal on the shop window:
The value of an alarm indicator (sensor) arrives at the physical input of the binary input. This value is linked with a logical AND to the communication object of a push-button or a blind. So if now the push-button has been pressed for deactivation (e.g. to clean the window) or the blind has been lowered, the “AND” condition of the linkage is no longer fulfilled and no alarm will be triggered if the alarm indicator sends a corresponding value.
Alarm signal in the apartment building:
Window and locking contacts are installed on the windows and doors of a residential building and linked with “AND." When all windows are closed and the front door is locked (closing contact), the alarm is armed. Now, as soon as a window is opened, the alarm is triggered. If the front door is not locked, all windows can be opened without triggering an alarm.