Material Verification

Introduction

MaterialVerificationActivity is a MES-specific material parallel verification node. It is used to monitor material verification signals or barcode variables in real-time and automatically execute material verification. Unlike MaterialDetectionActivity, this node supports multi-material parallel verification and achieves real-time response by subscribing to variable change events.

Configuration Items

Property Name	Display Name	Type	Default Value	Description
SerialNumberVariableName	Product Code Variable	string	"Inbound_SerialNumberVariable"	Variable name for product code
TriggerType	Verification Trigger Type	MaterialDetectionTriggerType	VerificationSignal	Trigger method for verification
VerificationSuccessWriteValue	Verification Success Write Value	int	1	Value written when verification succeeds
VerificationFailWriteValue	Verification Fail Write Value	int	2	Value written when verification fails
IsRestVerificationResult	Reset Verification Result	bool	true	Whether to reset result when trigger signal resets
VerificationRestWriteValue	Reset Result Write Value	int	0	Value written when resetting
ReadRetryCount	Read Retry Count	int	10	Retry count for reading variables
ReadRetryDelay	Read Retry Delay	int	500	Read retry interval (ms)
WriteRetryCount	Write Retry Count	int	10	Retry count for writing variables
WriteRetryDelay	Write Retry Delay	int	500	Write retry interval (ms)
IsDeliverResults	Deliver Results	bool	true	Whether to deliver results after verification

Trigger Types

Enum Value	Description
VerificationSignal	Triggered by monitoring verification signal variable changes
BarcodeVariable	Triggered by monitoring barcode variable changes

Business Logic

Execution Flow

┌─────────────────────────────────────────────────────────────┐
│               MaterialVerificationActivity                  │
├─────────────────────────────────────────────────────────────┤
│  EnterAsync - Initialization Phase                          │
│  ├─ Check if station is enabled                             │
│  ├─ Check if function is enabled                            │
│  ├─ Collect monitored variables based on trigger type       │
│  ├─ Create variable monitoring channel                      │
│  └─ Register variable change event handling                 │
├─────────────────────────────────────────────────────────────┤
│  OnTagValueChanged - Variable Change Handling               │
│  ├─ Check if changed variable is monitoring target          │
│  ├─ Trigger Signal = 1 → Execute Verification               │
│  ├─ Trigger Signal = 0 → Execute Reset (if enabled)         │
│  └─ Process verification for multiple materials in parallel │
├─────────────────────────────────────────────────────────────┤
│  VerificationAsync - Verification Processing                │
│  ├─ Read material barcode                                   │
│  ├─ Get product model                                       │
│  ├─ Execute barcode rule detection                          │
│  ├─ Execute material state detection (if enabled)           │
│  ├─ Execute material missing process detection (if enabled) │
│  └─ Deliver verification result                             │
└─────────────────────────────────────────────────────────────┘

Verification Result Output

After each material verification is completed, the following variables are set in the flow context:

Variable Name Pattern	Type	Description
{MaterialName}_Verification_ErrorCode	int	Error code
{MaterialName}_VerificationMaterialDetailId	Guid?	Material Detail ID
{MaterialName}_MaterialCode	string	Material Barcode
{MaterialName}_VerificationResultSignal_Value	bool	Verification Result
{MaterialName}_BindMaterialVariable_Value	string	Bound Material Barcode
{MaterialName}_ExceptionVariable_Value	string	Exception Description
{MaterialName}_MaterialVerification_Counter	int	Verification Counter
{MaterialName}_MaterialVerification_Result	DataItemCollection	Verification Result Collection

Usage Example

Basic Configuration

{
  "Name": "Material Parallel Verification",
  "Type": "MaterialVerificationActivity",
  "TriggerType": "VerificationSignal",
  "VerificationSuccessWriteValue": 1,
  "VerificationFailWriteValue": 2,
  "IsRestVerificationResult": true,
  "VerificationRestWriteValue": 0,
  "IsDeliverResults": true
}

Difference from MaterialDetectionActivity

Feature	MaterialDetectionActivity	MaterialVerificationActivity
Execution Mode	Serial, Single Execution	Parallel, Continuous Monitoring
Trigger Method	Triggered when flow executes	Triggered when variable changes
Exit Mode	Auto Exit	Manual Exit
Multi-Material Support	Detect one by one	Parallel detection
Applicable Scenario	Simple material detection	Complex multi-material parallel detection