Print Initialize

Introduction

PrintInitializeActivity is a print initialization node used to prepare data required for label printing. This node queries label templates and initializes print data sources based on product models and station configurations, supporting data acquisition from variables, flow data items, barcode generation, and more.

Configuration Items

Property Name	Display Name	Type	Required	Default Value	Description
WriteRetryCount	Write Retry Count	int	No	3	Retry count for writing variables
WriteRetryDelay	Write Retry Delay	int	No	500	Write retry delay (ms)

Business Logic

Execution Flow

Start
  │
  ▼
Initialize print result data items
  │
  ▼
Check process model
  │
  ├─► Empty → Set result=2, return
  │
  ▼
Check station printer configuration
  │
  ├─► Empty → Set result=2, return
  │
  ▼
Get Product Model
  │
  ├─► Get from trace data
  │
  └─► Get from product identification code
  │
  ├─► Empty → Set result=2, return
  │
  ▼
Traverse printer configuration
  │
  ├─► Query print agent configuration
  │
  ├─► Query label print template
  │
  └─► Initialize print data mapping
        │
        ├─► Variable Type → Read variable value
        ├─► Flow Item Type → Get flow data
        └─► Generate Barcode Type → Call barcode generation
  │
  ▼
Build print data model list
  │
  ▼
End

Flow Data Items

Input Data Items

Data Item	Type	Description
ApplicationData	ProcessModel	Process Model
LabelPrinter	string	Printer Name (Comma separated)
LabelPrintSerialNumberValue	string	Product Barcode
LabelPrintProductValue	string	Product Model Identification Code
LabelPrintDataSource	Dictionary<string, string>	Extended Print Data Source

Output Data Items

Data Item	Type	Description
PrintDataModel	List<PrintDataModel>	Print Data Model List
LabelPrintResultValue	int	Print Initialization Result
LabelPrintDescriptionValue	string	Print Initialization Description
ProductModel	ProductModel	Product Model
TraceModel	TraceModel	Trace Data Model

Usage Example

Basic Configuration

<PrintInitializeActivity Name="Print Initialization">
  <WriteRetryCount>3</WriteRetryCount>
  <WriteRetryDelay>500</WriteRetryDelay>
</PrintInitializeActivity>

Typical Flow Configuration

Set Print Parameters → Print Initialization → Label Printing

<!-- Set printer and product code -->
<VariableWriteActivity Name="Set Print Parameters">
  <Variable>LabelPrinter</Variable>
  <Value>DefaultPrinter</Value>
</VariableWriteActivity>

<PrintInitializeActivity Name="Print Initialization">
  <WriteRetryCount>3</WriteRetryCount>
</PrintInitializeActivity>

<ConditionActivity Name="Initialization Result Judgment">
  <Condition>Flow.DataItems["LabelPrintResultValue"] != 2</Condition>
  <TrueBranch>
    <PrintLabelActivity Name="Label Printing" />
  </TrueBranch>
  <FalseBranch>
    <LogActivity Name="Log Initialization Failure" />
  </FalseBranch>
</ConditionActivity>