Logic Functions - Gira KNX 2139 00 Product Documentation

Logic functions |

11 Logic functions
The device contains up to 8 logic functions. Simple or complex logical operations in a
KNX installation can be performed using these functions. Linking of input and output
objects allows the networking of logic functions, permitting the execution of complex
operations.
Enabling and configuring the number of logic functions
To be able to use logic functions, they must be enabled centrally on the "General"
parameter page.
￭ Activate the parameter "Logic functions".
The logic functions can be used. The "Logic functions" parameter node be-
comes available, which contains additional parameter pages. The configura-
tion of the logic functions takes place in this parameter node.
Logic functions can be enabled in steps so that the number of visible functions and,
in consequence, the available parameters and communication objects are visible in
the ETS. The number of available logic functions can be defined on the "Logic func-
tions" parameter page.
￭ Configure the "Number of logic functions" parameter to the desired value.
As many logic functions are created as have been selected.
The application program deletes existing logic functions from the configuration
if the number of available functions is reduced.
Up to two time functions can be preset for each switching output, independently of
each other. The time functions affect the communication objects "Switching" and
delay the object value received depending on the telegram polarity .
At the end of a disabling function, the switching state received during the func-
tion or set before the function can be tracked. At the same time, residual times
of time functions are also tracked if these had not yet fully elapsed at the time
of the reactivation.
The time delays do not influence the staircase function if this is enabled.
A time delay still in progress will be fully aborted by a reset of the actuator
(bus voltage failure or ETS programming).
Heating actuator 6-gang with controller | Order no. 2139 00 | 21393100 Page 213 of 257