# Unload Feeder from Position

## Overview

Unload the Consumable Feeders from Station Position.

### Relevant Artifacts

The table below describes the properties for this entity type:

| Name                                                                                 | Type       | Is Mandatory | Data Type | Description                                      |
| :----------------------------------------------------------------------------------- | :--------- | :----------: | :-------- | :----------------------------------------------- |
| IoTMetadataDefinition                                                                | SmartTable |     Yes      |           | Metadata configuration for equipment integration |
| [IoTFujiNeximUnloadComponents](../../artifacts/dees.md#iotfujineximunloadcomponents) | DEE        |     Yes      |           | Detach feeders from a specified MES resource     |

## How It Works

When a `UNLOADCOMP` event is received from a Fuji NXT III machine, the following process is executed:

### Area Feature Checks

- Resolves the MES Resource Name using `FUJI_LineNameMachineNameModuleNo_`.

### Resource Feature Checks

- It checks whether the `UseFujiToUnloadComp` feature is enabled for the MES Resource in `ST_IoTMetadataDefinition`.

### MES Operations

- If the feature is enabled, the Automation Controller calls the DEE [IoTFujiNeximUnloadComponents](../../artifacts/dees.md#iotfujineximunloadcomponents), passing:
    - The MES Resource Name
    - A list of components to be unloaded
- The DEE performs the following actions:
    - Detaches the **Consumable Feed**
    - Updates the **quantity of the Consumables**

Sends a `UNLOADCOMP_ACK` message back to the equipment, which includes:

- A list of components
- A result (`0 (Ok)` or `1 (NOk)`) for each component

**Error Handling**  
   If any component fails during the DEE operation, the entire set operation is considered failed.

**Bypass Condition**  
   If `UseFujiToLoadComp` is set to `False` or not defined, the DEE call is bypassed entirely.

### Assumptions

SmartTable IoTMetadataDefinition is configured with the following entry for each station:

| Resource                    | ResourceType | Area | Name                | Value |
| --------------------------- | ------------ | ---- | ------------------- | ----- |
| MES Fuji Station X Resource |              |      | UseFujiToUnloadComp | True  |