Fieldbus modules

The AC 800F uses the fieldbus modules to collect

and process real-time and diagnostic data. Up to

four fieldbus modules can be mounted into one AC 800F.

The fieldbus modules have the following tasks and

characteristics:

• Electrical isolation between the process and system

• Status LEDs for the module status

• Independent fault detection and fault signaling

• Connection of the fieldbus lines

Ethernet modules

Process stations and the operator and engineering

level in the Freelance 800F system communicate with

each other via Ethernet.

Intelligent linking devices

As the AC 800F possesses the high-speed connec

tion of both PROFIBUS (PROFIBUS DP) and FOUN

DATION Fieldbus (FF-HSE), the slower buses of the

two fieldbus technologies (PROFIBUS PA and FF-H1)

can be connected using intelligent linking devices.

These devices allow to connect several slow buses

to one fast bus, with the advantage that a lot more

field devices can be connected to an AC 800F sta

tion than when the slow fieldbuses are connected directly.