Description
The Hysteresis function provides a switching output by comparing input values and thresholds.
Function
If you select "Direct ":
- If greater than On, Hysteresis outputs a true value.
- If greater than Off but less than On, Hysteresis outputs the value of the previous status.
- If less than Off, Hysteresis outputs a false value.
If you select "Reverse":
- If greater than Off, Hysteresis outputs a false value.
- If greater than On but less than Off, Hysteresis outputs the value of the previous status.
- If less than On, Hysteresis outputs a true value.
Input
PIN | Description |
|---|---|
Input | REAL, analog input. |
On | REAL, limit value for ON status. |
Off | REAL, limit value for OFF status. |
Output
PIN | Description |
|---|---|
Hysteresis | BOOL, on-off output |
Example 1
The heating equipment starts and stops during the heating process: It starts when the return air temperature is below 15 °C and stops when the return air temperature is above 20 °C.
Example 2
The cooling equipment starts and stops during the cooling process: It starts when the return air temperature is above 30 °C and stops when the return air temperature is below 26 °C.
