Instance data block - Manual - SIMATIC AX - Introduction to SIMATIC AX Logic Control Engineering - Introduction, Get started, AX Workflows, Glossary, SIMATIC AX Logic Control Engineering

Introduction to SIMATIC AX Logic Control Engineering
Portfolio
SIMATIC AX
Product
SIMATIC AX
Software version
2510
Edition
07/2026
Language
English (original)
Package Name
@ax/introduction

Abbreviation: IDB

Description:
An instance data block in TIA Portal stores the formal parameters and static data of function blocks. An instance data block can be assigned to a function block call or to a call hierarchy of function blocks.