Supported platforms: CODESYS 2.3, CODESYS 3.5
This function block converts the voltage value to a boolean DI signal with given parameters. When the inputs voltage level exceeds the threshold limit, the function returns the value as true.
The function returns false, when the voltage falls below the limit calculated by subtracting hysteresis from the threshold.
The threshold is given to the function as a voltage with two decimals, e.g. 350 is 3,50V. Hysteresis is given to the function as a percentage of the threshold.
Input variable name |
Data type |
Range |
Description |
i_Voltage |
WORD |
0..65535 |
Voltage value, e.g. 500 = 5,00V |
i_Threshold |
WORD |
0..65535 |
Threshold voltage, e.g. 100 = 1,00V |
i_Hysteresis |
BYTE |
0..100% |
Hysteresis percent of threshold |
Output variable name |
Data type |
Range |
Description |
o_DI |
BOOL |
FALSE..TRUE |
Comparator output |
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Source file Topic000233.htm
Last updated 4-Sep-2025