> For the complete documentation index, see [llms.txt](https://docs.influxtechnology.com/support_guides/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.influxtechnology.com/support_guides/dialog-user-guide/appendix-1/edit-pid-presets.md).

# Edit PID Presets

This section details the facility for editing the 'PID Presets'. The 'PID Presets' window is shown below:

<div align="left"><figure><img src="/files/1xWSZq3uXkiZ6ehnv3Vz" alt="" width="563"><figcaption></figcaption></figure></div>

The window contains 'Filters' to allow users to identify the 'PID Preset' to be edited quickly. Once the required 'PID Preset' has been identified and selected, the two right-hand panels display a settings summary. The fields are user-editable. The changes can be confirmed or cancelled using the 'Tick' and 'Cross' buttons. The toolbar also contains an option to delete all Mode 0x22 PID presets from the library.

#### &#x20;PID Settings:

* **PID {Hex}**—Hexadecimal address for the PID.
* **Label**—Designates the name of the 'PID Preset'.
* **Units**—Specify the units.
* **Mode**—Designates the Diagnostic Service utilised to read the PID.
* **Formula**—Allows a conversion formula to be specified to be automatically applied.
* **Min Value**—Allows determining a minimum permitted value for the PID.
* **Max Value**—Allows determining a maximum permitted value for the PID.

#### Memory Layout:

* **Data Type**—Drop-down menu selects the data type for the PID.
* **Size**—Designates the number of bytes for each data item.
* **Byte Position**—Location of first data byte in returned CAN message.
* **Start Bit**—Designates the occurrence of the start bit.
* **Bit Count**
* **Precision**—Displayed decimal places.
* **Byte Order**—Selects the order in which the data bytes for the PID are transmitted.


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