Description Of The Inputs - Siemens LOGO! 24RC Manual

4.3.1 Description of the Inputs

Connection inputs
The connections that can be made to other blocks or to the
inputs of the LOGO! device are described here.
S (set):
The input S allows you to set the output to "1".
R (reset):
The reset input R takes priority over all other inputs and
switches outputs to "0".
Trg (trigger):
You use this input to start the execution of a function.
Cnt (count):
This input records count pulses.
Fre (frequency):
Frequency signals to be evaluated are applied at the
input with this description.
Dir (direction):
You use this input to set the direction in which a counter
should count, for example.
En (enable):
This input enables the function of the block. If the input
is at "0", other signals are ignored by the block.
Inv (invert):
The output signal of the block is inverted when this input
is activated.
Ral (reset all):
All internal values are reset.
Connector X at the inputs of the special functions
If you wire inputs of special functions to the x connector,
these inputs will be assigned the value 0 i.e. a low signal is
applied to the inputs.
LOGO! Manual
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LOGO! Functions
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