Low Value Select (LVS)
Selects the lowest value between two process variables.
OUT = Min(PV1, PV2)
Parameter values for the LVS function block:
Parameter | Data Type | Description |
|---|---|---|
PV1 | REAL | Uses any REAL value |
PV2 | REAL | Uses any REAL value |
OUT | REAL | Lowest REAL value between PV1 and PV2 |
SEL | BOOL | FALSE when PV1 is the lowest value. TRUE when PV2 is the lowest value. |
When PV1 or PV2 is infinity or Not a Number (NaN) value, OUT sets to PV1, SEL to FALSE and the
ERRSTAT
Param error counter increments.Function Block Diagram Example
Structured Text Example
LVS(Process1, Process2); OutValue := LVS.OUT; Result := LVS.SEL;
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