DS18b20 Filter
Full Name
DS18b20_filter
Library
Lib\Unipi
Version
V1.0
Description
This block ensures valid value of temperature. If set up correctly, it is able to filter an error, that is not corrected by CRC (value 85), if the block detects this value on its input filtered, it will return the last valid value and will set its output error* to TRUE. It is possible to use for a 1-Wire temperature sensor connected directly to the controller or with the Unipi Extension xG18, where input IsValid* will be used and when it is FALSE, the error output will be TRUE.
Inputs
| Input | Type | Description |
| IN | REAL | input temperature of the 1-Wire sensor |
| IsValid | BOOL | IsValid variable of the channel when used with xG18 |
| filtered | REAL | value to be filtered-out |
Outputs
| Output | Type | Description |
| OUT | REAL | valid value of the temperature |
| error | REAL | fault state of the input temperature |
Application example
