---
title: "Offset Parser"
slug: "offset-parser"
updated: 2024-11-26T17:10:47Z
published: 2024-11-26T17:10:47Z
canonical: "help.tritondigital.com/offset-parser"
---

> ## Documentation Index
> Fetch the complete documentation index at: https://help.tritondigital.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Offset Parser

**Offset Parser** is used whenever the RAS provides fixed-length messages, with fields being present at fixed byte offsets, with predetermined lengths.

| **Param name** | **Mandatory** | **Description** | **Default Value** | **Possible Value** |
| --- | --- | --- | --- | --- |
| Encoding | Yes | Source encoding of the message coming from the automation system. | utf-8 |  |
| StartBytes | No | Bytes delimiting the beginning of a valid message. Any bytes before this will be discarded. |  | Bytes, in hexadecimal notation. |
| EndBytes | No | Bytes delimiting the end of a valid message. |  | Bytes, in hexadecimal notation. |
| Length | Yes | The minimum length that the message should have. |  | 1 - 2,147,483,647 |
| Trim | No | Whenever the message is longer than the Length, this determines whether the characters are trimmed off from the left or from the right. |  | None, Left, Right. |
| OffsetMappings | Yes | A mapping of the RAS message to a dictionary of key-values. |  |  |