HF-MES-manual/en/production_configuration/SPC_configuration.md

SPC Collection Model

1. Function Overview

The SPC Collection Model belongs to the basic module of the MES system. It is used to configure the result parameter collection points for process units, enabling real-time collection and monitoring of production process data. SPC (Statistical Process Control) is used to monitor the stability of production processes.

Core Functions:

• SCADA Point Binding: Configure the association relationship between process units and collection points
• Collection Parameter Management: Manage data collection parameters for collection points

Function Screenshot:

2. Term Explanation

Term	Definition	Description
SPC	Statistical Process Control	Used to monitor the stability of production processes
SCADA	Supervisory Control and Data Acquisition	Used for real-time data collection and monitoring
Data Type	Type of collected data	Including first inspection data, result data
Result Parameter	Result parameters of process units	Defines output data after process execution
First Inspection Data	First piece inspection data	Inspection data for the first product produced

3. Data Model Relationship Description

3.1 SPC Collection Configuration Components

A complete SPC collection configuration consists of the following four elements:

flowchart LR
    subgraph SPC Collection Configuration Elements
        direction TB
        A[Process Unit] --> B[SPC Collection Configuration]
        C[Data Type] --> B
        D[SCADA Point] --> B
    end

    B --> E[Save to Corresponding Data Table]

Element	Description	Example
Process Unit	Which process to configure for	Cell assembly process
Data Type	Business type of the data	First Inspection Data / Result Data
SCADA Point	Source point of the data	TEMP_001

3.2 Data Type and Data Table Mapping

The data type determines which table the data is saved to:

flowchart TB
    subgraph Data Type
        DT1["First Inspection Data<br/>(First Inspection)"]
        DT2["Result Data<br/>(Result Data)"]
    end

    subgraph Corresponding Data Table
        T1["First Inspection Data Table<br/>Saves first piece inspection data"]
        T2["Result Parameter Table<br/>Saves process result data"]
    end

    DT1 -->|"Data Type=First Inspection"| T1
    DT2 -->|"Data Type=Result"| T2

3.3 Collection Entry Description

SCADA data collection has only one entry interface set_node_data, with 4 callers:

flowchart TB
    subgraph SCADA Collection Entry
        A[set_node_data Interface]
    end

    subgraph Callers
        B[EdgeMange]
        C[EPS]
        D[MES Internal Call]
        E[Device Call]
    end

    B --> A
    C --> A
    D --> A
    E --> A

    style D fill:#90EE90

Caller	Description	Relationship with SPC Configuration
EdgeMange	Edge manager push	Does not use SPC configuration
EPS	EPS system push	Does not use SPC configuration
MES Internal Call	MES internal business call	Uses SPC configuration
Device Call	Direct device call	Does not use SPC configuration

This function configures the collection rules for "MES Internal Call".

3.4 MES Internal Call Collection Process

When MES internal business calls the set_node_data interface, the SPC collection configuration determines where the data is saved:

sequenceDiagram
    participant MES业务 as MES Internal Business
    participant SCADA as set_node_data Interface
    participant SPC配置 as SPC Collection Configuration
    participant DB as Database

    MES业务->>SCADA: Call set_node_data<br/>Parameters: Point Code, Collected Value
    SCADA->>SPC配置: Query configuration by point code
    SPC配置-->>SCADA: Return: Process Unit, Data Type, SCADA Point
    SCADA->>DB: Save to corresponding data table based on data type
    DB-->>SCADA: Save successful
    SCADA-->>MES业务: Return result

3.5 Configuration Examples

Configuration ID	Process Unit	Data Type	Data Table	SCADA Point
Config 1	Cell Assembly Process	First Inspection Data	First Inspection Data Table	TEMP_001
Config 2	Cell Assembly Process	Result Data	Result Parameter Table	PRESS_001
Config 3	Formation Process	Result Data	Result Parameter Table	VOLT_001

4. SPC Collection Model Interaction Flow

4.1 SCADA Point Binding

4.1.1 Point Binding Description

Point binding establishes the association between process units and SCADA collection points, enabling automatic collection of production data.

Function Screenshot:

4.1.2 Add Point Binding

Operation Steps:

1. Go to [Production Configuration] → [SPC Collection Model] → [SCADA Point Binding]
2. Click [Add] button
3. Select the process unit to bind
4. Select or configure SCADA collection points
5. Set collection parameters
6. Click [Save] to complete point binding

Field Description:

Field	Description	Required
Process Unit	Process unit to bind the point	Yes
Point Code	Point code in SCADA system	Yes
Point Name	Descriptive name of the point	Yes
Data Type	Data type of the point, e.g., "Numeric", "Switch"	Yes
Collection Frequency	Data collection frequency in seconds	Yes
Status	Enabled/Disabled	No
Remarks	Other supplementary information	No

[Important] The point code must match the configuration in the SCADA system, otherwise data collection will fail. [Important] The same point code cannot be bound to the same process unit repeatedly.

Function Screenshot:

4.1.3 Edit Point Binding

Operation Steps:

1. Go to [Production Configuration] → [SPC Collection Model] → [SCADA Point Binding]
2. Find the binding record to edit in the list
3. Click [Edit] button
4. Modify the information to update
5. Click [Save] to complete modification

[Note] Historical collected data is not affected.

4.1.4 Delete Point Binding

Operation Steps:

1. Go to [Production Configuration] → [SPC Collection Model] → [SCADA Point Binding]
2. Find the binding record to delete in the list
3. Click [Delete] button
4. Confirm the delete operation

[Note] After deleting the point binding, subsequent data collection for this point will stop, but collected data will be retained.

4.1.5 Point Binding Query

Query Conditions:

Query Condition	Description
Process Unit	Filter by process unit
Point Code	Exact query by point code
Point Name	Fuzzy query by point name
Status	Filter by enabled/disabled status
Creation Time	Filter by creation time range