Function Block
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.
Inputs
|
Input |
Data Type |
Range |
Unit |
Default |
Description |
|---|---|---|---|---|---|
|
CYCLE |
TIME |
|
|
|
Sampling period. Must not be less than the target cycle timing. |
|
R1 |
BOOL |
|
|
|
Overriding reset. |
|
RUN |
BOOL |
|
|
|
Run command:
|
|
X0 |
REAL |
|
|
|
Initial value. |
|
XIN |
REAL |
|
|
|
Input signal. |
Outputs
|
Output |
Data Type |
Range |
Unit |
Description |
|---|---|---|---|---|
|
Q |
DINT |
|
|
Running mode report: NOT (R1). |
|
XOUT |
REAL |
|
|
Output signal. |
Remarks
- 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.
FBD Language Example
FFLD Language Example
- In the FFLD "Free Form Ladder Diagram" Language, the input rung is the RUN command.
- The output rung is the Q report status.
IL Language Example
(* 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
ST Language Example
(* MyIntg is a declared instance of INTEGRAL function block. *)
MyIntg (RUN, R1, XIN, X0, CYCLE);
Q := MyIntg.Q;
XOUT := MyIntg.XOUT;
See Also
