====== DS18b20 Filter ======

{{:en:mervis-ide:35-help:ds18b20_filter.png?150|DS18b20 Filter Block}}

===== 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 =====

{{:en:mervis-ide:35-help:ds18b20_filter-example.png|Examples of usage of DS18b20 filter block}}