Nip-activity - Catia May 2026

Mastering NIP-Activity in CATIA: A Comprehensive Guide to Non-Interactive Process Automation

NIP-Activity — Catia

Example: A Simple NIP-Compatible CATScript

This script opens a part, sets a user-defined parameter, and saves it as a STEP file.

Language="VBSCRIPT"
Sub CATMain()
Dim oDoc As Document
Dim oPart As Part
Dim strInputFile As String
Dim strOutputFile As String
Dim oFileSystem
Dim oLogFile NIP-Activity - Catia
' --- Initialize Logging ---
Set oFileSystem = CreateObject("Scripting.FileSystemObject")
Set oLogFile = oFileSystem.OpenTextFile("C:\NIP_Logs\process.log", 8, True) ' 8 = append
oLogFile.WriteLine "[" & Now & "] Starting NIP Process."
' --- Input from command line or external file ---
' For simplicity, hardcoded here, but should be read from an argument
strInputFile = "C:\CATIA_Data\Input\MyPart.CATPart"
strOutputFile = "C:\CATIA_Data\Output\MyPart.STEP"
' --- Open the document ---
Set oDoc = CATIA.Documents.Open(strInputFile)
If oDoc Is Nothing Then
    oLogFile.WriteLine "ERROR: Could not open " & strInputFile
    oLogFile.Close
    Exit Sub
End If
oLogFile.WriteLine "Opened: " & strInputFile
' --- Perform a modification (Example: set a parameter) ---
On Error Resume Next
Set oPart = oDoc.Part
Dim oParams As Parameters
Set oParams = oPart.Parameters
Dim oParam As Parameter
Set oParam = oParams.Item("BatchProcessed")
If Err.Number = 0 Then
    oParam.Value = "Yes"
    oLogFile.WriteLine "Updated parameter 'BatchProcessed' to Yes."
Else
    oLogFile.WriteLine "Warning: Parameter 'BatchProcessed' not found."
End If
On Error GoTo 0
' --- Export as STEP ---
Dim oStepSetting As SettingController
Set oStepSetting = CATIA.GetSetting("STEPSettingController")
' (Configure STEP settings as needed)
oDoc.Export oOutputFile, "STEP"
oLogFile.WriteLine "Exported to: " & strOutputFile
' --- Clean up ---
oDoc.Close
oLogFile.WriteLine "[" & Now & "] Process completed."
oLogFile.Close
Set oDoc = Nothing
Set oPart = Nothing

End Sub

4. Integration into PLM Pipelines

NIP-Activity is the backbone of many automated Product Lifecycle Management (PLM) pipelines. For example, when a designer checks in a new part, a server-side NIP process can automatically run a clash detection or draft analysis without human intervention. Mastering NIP-Activity in CATIA: A Comprehensive Guide to