Function Block
A function block groups an algorithm and a set of private data. It has inputs and outputs. - Asymmetric blinker.
Inputs
RUN : BOOL Enabling command
TM0 : TIME
Duration of FALSE state on output
TM1 : TIME
Duration of TRUE state on output
Outputs
Q : BOOL Output blinking signal
Time diagram
Remarks
The output signal is FALSE when the RUN input is FALSE. In FFLD language, the input rung is the IN command. The output rung is the Q output signal.
ST Language
(* MyBlinker is a declared instance of BLINKA function block *)
MyBlinker (RUN, TM0, TM1);
Q := MyBlinker.Q;
FBD Language
FFLD Language
IL Language:
(* MyBlinker is a declared instance of BLINKA function block *)
Op1: CAL MyBlinker (RUN, TM0, TM1)
FFLD MyBlinker.Q
ST Q
See also
