# Working with the Fieldbus and SoftPLC Tab

The Fieldbus and SoftPLC are located in the Fieldbus and SoftPLC tab, when a single controller has been selected in the Plant structure .

A fieldbus is a communication link between a factory management system (fieldbus master) and a remote node (fieldbus subordinate). A node can be complex, like a controller, but may also be a simple unit, like a sensor or a valve.

The Fieldbus and SoftPLC tab is divided into four sections:

- Overview configuration

- Fieldbus configuration

- Acyclic Data configuration - Only available for Synchronized tightening.

- SoftPLC configuration

Relevant Information

- Fieldbus Requirements

In this Section

- Overview Configuration Tab
- Fieldbus Overview
- Fieldbus Requirements
- SoftPLC Overview
- SoftPLC Requirements
- Fieldbus Configuration Tab
- SoftPLC Configuration Tab
- Controller Fieldbus