GEN

The function generator ( The library UTIL.Library\ \) generates typical periodic functions.

Example in CFC \ \ \ \

Input variables:\ \ \ \

Variable	Data type	Initial	Description
MODE	GEN_MODE		Function to be generated TRIANGLE: triangular function from -AMPLITUDE to +AMPLITUDE TRIANGLE_POS: triangular function from 0 to +AMPLITUDE SAWTOOTH_RISE: Sawtooth function increasing from -AMPLITUDE to +AMPLITUDE SAWTOOTH_FALL: Sawtooth function decreasing from +AMPLITUDE bis -AMPLITUDE RECTANGLE: Rectangular function switching from -AMPLITUDE to +AMPLITUDE SINE: Sine function COSINE: Cosine function
BASE	BOOL		FALSE: Function period referring to numbers of call (CYCLES) TRUE: Function period referring to time (PERIOD)
PERIOD	TIME	TIME#1s0ms	Period time, only relevant if BASE = TRUE
CYCLES	INT	1000	Number of calls per period, only relevant if BASE = FALSE
AMPLITUDE	INT		Amplitude of the function
RESET	BOOL		Reset of the function block

Output variables:\ \ \ \

Variable	Data type	Description
OUT	INT	Generated function variable

Illustration of the outputs for the different MODE types\ \

TRIANGLE / TRIANGLE_POS

SAWTOOTH_RISE / SAWTOOTH FALL

SINe / COSine

RECTANGLE

BASE defines whether the cycle period is really related to a defined time (BASE=TRUE) or whether it is related to a particular number of cycles, which means the number of calls of function block (BASE=FALSE).

PERIOD or CYCLES defines the corresponding cycle period.

AMPLITUDE defines, in a trivial way, the amplitude of the function to be generated.

The function generator is again set to 0 as soon as RESET=TRUE.