Foundation Fieldbus Technology; System Architecture - Endress+Hauser PROline Prosonic Flow 93 FOUNDATION Fieldbus Operating Instructions Manual

PROline Prosonic Flow 93 FOUNDATION Fieldbus
Endress+Hauser
5.3

FOUNDATION Fieldbus technology

The FOUNDATION Fieldbus (FF) is a purely digital, serial communication system that
connects fieldbus devices (sensors, actuators), automation systems and process
control systems with each other. As a local area network (LAN) for field devices, the
FOUNDATION Fieldbus was primarily designed for the requirements of process
engineering. The FOUNDATION Fieldbus thus forms the basic network throughout the
hierarchy of a communication system.
5.3.1

System architecture

The following figure shows two typical examples of a FOUNDATION Fieldbus network
with the associated components.
Fig. 47: System architecture of the FOUNDATION Fieldbus with associated components (line structure)
FF-HSE = High Speed Ethernet, FF-H1 = FOUNDATION Fieldbus-H1, LD = Linking Device FF-HSE/FF-H1,
PS = Bus Power Supply, SB = Safety Barrier, BT = Bus Terminator (Terminator)
The following possibilities can be realised in respect of system connection:
– A linking device can be used to connect to higher-level fieldbus levels (e.g. to the High Speed Ethernet -
HSE).
– An FF-H1 card is required for direct connection to a process control system.
– System inputs are available directly for H1 and H2 (FF-HSE).
5 Operation
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