HYSTER
Function Block - Hysteresis detection.
Inputs
|
Input |
Data type |
Description |
|
XIN1 |
REAL |
First input signal. |
|
XIN2 |
REAL |
Second input signal. |
|
EPS |
REAL |
Hysteresis. |
Outputs
|
Output |
Data type |
Description |
|
Q |
BOOL |
Detected hysteresis: TRUE if XIN1 becomes greater than XIN2+EPS and is not yet below XIN2-EPS. |
Remarks
The hysteresis is detected on the difference of XIN1 and XIN2 signals. In LD language, the input rung (EN) is used for enabling the block. The output rung is the Q output.
ST Language
MyHyst is a declared instance of HYSTER function block.
MyHyst (XIN1, XIN2, EPS);
Q := MyHyst.Q;
FBD Language
LD Language
The block is not called if EN is FALSE.
HYSTER |
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IEC 61131-3 Automation platform > Programming - Reference guide > Advanced operations > HYSTER |
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