The Freelance 800F process level

At the process level, a Freelance 800F system can

consist of several process stations that are connected

with I/O units. You have the option of running these

process stations either redundantly (CPU redundancy,

fieldbus module redundancy) or without redundancy.

Modular plug-in input/output modules are used in

accordance with the type and quantity of process

signals. With AC 800F, fieldbus-compliant compo

nents such as remote I/O or field devices can be

connected.

System communication

The operator and process levels communicate with

each other via the system bus (based on Ethernet)

with TCP/IP, where you can choose between various

transmission media such as AUI, twisted pair, fiber

optic or coaxial cable. A Freelance OPC server is

available for connecting to higher-level operator

stations (800xA) or other OPC clients. The real-time

process values and alarms from the Freelance sys

tem can be accessed via OPC. A „C“ programming

interface for Windows programs can be used for

external applications that do not use the standard

OPC interface. The DMS-API is used for this.