# LGF_BitReset (FC / 3.0.1)

Overview

Author: Siemens SIMATIC Systems Support

## Short description

This block resets a bit at a predefined position in a variable of the data type DWORD.
Alternatively, Word and Byte can be used instead of DWord by converting the passed parameter with, for example, BYTE_TO_DWORD and the result with DWORD_TO_BYTE.

### Block Interface

| LGF_BitReset (FC) |
--- | --- | ---
DWord |  |  | value |  | Ret_Val |  |  | DWord
USInt |  |  | bitNo |  |  |  |  |

### Input parameter

Identifier | Data type | Description
--- | --- | ---
value | DWord | Tag where the bit has to be reset
bitNo | USInt | Bit number to reset in "value" parameter

### Output parameter

Identifier | Data type | Description
--- | --- | ---
Ret_Val | DWord | Tag with reset bit

## Change log

Version & Date | Change description
--- | ---
| 1.0.0 | Siemens Industry Support
| 06.06.2015 | first release
| 3.0.0 | Siemens Industry Support
| 23.04.2020 | Set version to V3.0.0 harmonize the version of the whole library
| 3.0.1 | Simatic Systems Support
| 19.01.2021 | Insert documentation