Less than LES
Passes power while A is less than B.
LES
AGlobal.Level35BGlobal.LowLevel40
| Tag | After two scans |
|---|---|
| Level | 35 |
| LowLevel | 40 |
How it works
Passes power while Source A is less than Source B; blocks it otherwise.
How it's used
Use LES to start something when a value drops below a limit.
LES
AGlobal.Level35BGlobal.LowLevel40
Global.FillValveOTE
| Tag | Value |
|---|---|
| Level | 35 |
| LowLevel | 40 |
| FillValve | 1 |
Level is below 40, so FillValve is open.
Operands
| Operand | Data type | Read or write |
|---|---|---|
| A | DINT, REAL, STRING, CHAR or a number | Reads |
| B | DINT, REAL, STRING, CHAR or a number | Reads |
Common mistakes
- Swapping A and BLES passes while A is less than B. Swap them and the test reverses.
Learn it in a lesson
- Comparing valuesIntermediate · 25 min
- Read stock from a Web API LinkBeginner · 25 min