MOUNTING BASE MODICON SCHNEIDER STBXBA2200

Modicon STB – mounting base – for power distribution module – 18.4 mm

PLC Mounting Base / I/O Base Module – Advantys STB STBXBA2200

This is a PLC mounting base (I/O base module), specifically the STBXBA2200 from the Modicon Advantys STB series by Schneider Electric. It is part of a modular distributed I/O system used in industrial automation and machine control applications.

What it is

The STBXBA2200 is a base unit designed to support and connect I/O modules in Advantys STB systems. Like other base modules in this family, it provides both mechanical mounting and electrical interconnection through an internal backplane.

It does not perform any processing or control functions itself but is essential for building a functional I/O system.

What it does

• Holds I/O modules securely in place
  • Provides:
  o Electrical backplane connection between modules
  o Power distribution across the system
  o Communication via the internal bus

This allows all connected modules to operate together as a unified system.

How it’s used

The system is built in a modular chain:
Base → I/O module → Base → I/O module → …

• Each I/O module plugs into a corresponding base
  • Multiple bases are connected to form a complete distributed I/O station
  • The backplane ensures seamless communication and power sharing

This structure makes installation flexible and scalable.

Difference vs STBXBA1000

Although both models serve the same purpose, there are differences:

• STBXBA2200:
  o Designed for specific module types or configurations
  o May support different wiring layouts or terminal arrangements
  o Can handle different electrical characteristics (e.g., current distribution)
• STBXBA1000:
  o Standard/general-purpose base

👉 Functionally similar, but not always interchangeable depending on system design.

Where it’s used

The STBXBA2200 base module is commonly found in:
• Distributed I/O stations
• Remote automation panels
• Machine control systems
• Industrial production lines
• Process automation environments

Key advantages

• Modular and flexible system design
  • Easy DIN rail installation
  • Reliable electrical and communication connections
  • Simplified wiring and maintenance
  • Scalable architecture for expanding systems

Compared to other PLC components

Simple explanation

In simple terms, this is a mounting and connection base for PLC I/O modules. It allows modules to be plugged in so they can receive power, communicate, and function together as part of a complete automation system.