Pallet Unbind

Introduction

PalletUnbindActivity is a pallet unbinding node used to release the binding relationship between a pallet and a product code. Upon successful unbinding, it returns the originally bound product code.

Configuration Items

Property Name	Display Name	Type	Required	Default Value	Description
ForcedUnbind	Forced Unbind	bool	No	false	If the pallet is not bound to a product code, unbinding will be considered successful

Business Logic

Execution Flow

Start
  │
  ▼
Initialize result data items
  │
  ▼
Get Pallet Code
  │
  ├─► Empty → Set result=2, return
  │
  ▼
Call Pallet Unbind Service
  │
  ├─► Pallet does not exist → Set result=2
  │
  ├─► Pallet not bound to product → Set result=2 (Non-forced mode)
  │
  └─► Unbind success → Set result=1, return product code
  │
  ▼
End

Result Values

Result Value	Description
0	Initial State
1	Unbind Success
2	Unbind Failure

Flow Data Items

Input Data Items

Data Item	Type	Description
ApplicationData	ProcessModel	Process Model
PalletUnbind_PalletCode_Value	string	Pallet Code

Output Data Items

Data Item	Type	Description
PalletUnbind_Result_Value	int	Unbind Result (0=Initial, 1=Success, 2=Failure)
PalletUnbind_Description_Value	string	Unbind Description
PalletUnbind_SerialNumber_Value	string	Unbound Product Code

Usage Example

Basic Configuration

<PalletUnbindActivity Name="Unbind Pallet">
  <ForcedUnbind>false</ForcedUnbind>
</PalletUnbindActivity>

Typical Flow Configuration

Read Pallet Code → Unbind Pallet → Get Product Code → Subsequent Processing

<VariableReadActivity Name="Read Pallet Code">
  <Variable>PalletCode</Variable>
  <Target>PalletUnbind_PalletCode_Value</Target>
</VariableReadActivity>

<PalletUnbindActivity Name="Unbind Pallet">
  <ForcedUnbind>false</ForcedUnbind>
</PalletUnbindActivity>

<ConditionActivity Name="Unbind Result Judgment">
  <Condition>Flow.DataItems["PalletUnbind_Result_Value"] == 1</Condition>
  <TrueBranch>
    <!-- Use unbound product code for subsequent processing -->
    <VariableWriteActivity Name="Set Product Code">
      <Variable>SerialNumber</Variable>
      <Value>{Flow.DataItems["PalletUnbind_SerialNumber_Value"]}</Value>
    </VariableWriteActivity>
  </TrueBranch>
  <FalseBranch>Exception Handling</FalseBranch>
</ConditionActivity>