# Controller Fieldbus

ToolsTalk 2 version 2.24 introduces Controller Fieldbus, which differs from a Fieldbus in one way: Controller Fieldbus is intended for controller-wide use and is shared by all Virtual Stations in a controller. Controller Fieldbus lets many Virtual Stations use the same incoming signal. This reduces the amount of required bandwidth, when compared with Fieldbus.

Controller Fieldbus provides a built-in signal-mapping feature by using Virtual Fieldbus. The purpose of Virtual Fieldbus is to map individual signal configurations into logical groups of signal configurations. Virtual Fieldbus provides a point from where Virtual Stations are mapped to signal configurations. A signal configuration can be mapped to many Virtual Fieldbuses, which lets Virtual Stations share the same signal configurations.

In this Section

- Prerequisites to Using Controller Fieldbus
- Creating a Controller Fieldbus Configuration
- Creating a Signal Configuration in the Controller Fieldbus
- Creating a Virtual Fieldbus
- Mapping a Signal Configuration to One or More Virtual Fieldbuses
- Mapping a Virtual Station to a Virtual Fieldbus