A function block groups an algorithm and a set of private data. It has inputs and outputs. - Calculates the integral of a signal with respect to time.
The time unit is seconds. The output signal has the units of the input signal multiplied by seconds. The INTEGRAL block samples the input signal at a maximum rate of 1 millisecond.
Inputs
RUN : BOOL Run command: TRUE=integrate / FALSE=hold
R1 : BOOL Overriding reset
XIN : REAL Input signal
X0 : REAL Initial value
CYCLE : TIME Sampling period (must not be less than the target cycle timing)
Outputs
Q : DINT Running mode report: NOT (R1)
XOUT : REAL Output signal
Remarks
In FFLD language, the input rung is the RUN command. The output rung is the Q report status.
ST Language
(* MyIntg is a declared instance of INTEGRAL function block *)
MyIntg (RUN, R1, XIN, X0, CYCLE);
Q := MyIntg.Q;
XOUT := MyIntg.XOUT;
FBD Language
FFLD Language
IL Language:
(* MyIntg is a declared instance of INTEGRAL function block *)
Op1: CAL MyIntg (RUN, R1, XIN, X0, CYCLE)
FFLD MyIntg.Q
ST Q
FFLD MyIntg.XOUT
ST XOUT
See also
