> For the complete documentation index, see [llms.txt](https://docs.smart-stuff.nl/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.smart-stuff.nl/p1-modbus-dongle/firmware-v2-current/register-mapping/charge-pro.md).

# Charge Pro

{% hint style="danger" %}
Firmware 2.3.0 exposes this mapping in the Device Manager, but no register recipe is assigned in `buildMappingsOnce()`. The selected profile therefore has no active mapped registers.
{% endhint %}

## Mapping behaviour

* Device Manager mapping value: `10`
* Profile: `CHARGE`
* Read function codes: `FC03` and `FC04`
* Register widths: mixed 16-bit and 32-bit
* 32-bit word order: high word first (MSW-LSW)
* Unmapped register handling: Modbus exception

{% hint style="info" %}
Device ID, baud rate and serial format are global firmware v2 settings. They are not changed when this mapping is selected.
{% endhint %}

## Register overview

No active registers are assigned to this profile in firmware 2.3.0.

## Reading the table

* **Words** is the number of consecutive 16-bit Modbus registers occupied by the entry.
* **Source** names correspond directly to the firmware v2 recipe source.
* **Conversion** records the exact scale, transform or direction handling configured by the recipe.
* This page is generated from `mb_recipe.h` and `modbus_profiles.h` for firmware 2.3.0.