PROFIBUS
PROcess FIeld BUS, process and fieldbus standard as specified in IEC 61784-1 CPF 3
PROFIBUS and PROFINET. It specifies functional, electrical, and mechanical properties for
a bit-serial field bus system.
PROFIBUS is available with the protocols: DP (=distributed I/O) and FMS (= Field bus Message
Specification)
PROFIBUS address
Each bus node must be assigned a PROFIBUS address for unambiguous identification on
PROFIBUS DP.
PC / PG or the ET 200 Handheld have the PROFIBUS address "0".
DP master and DP slaves have a PROFIBUS address from the 1 to 125 range.
PROFIBUS DP
PROFIBUS bus system with the DP protocol. DP stands for the German equivalent of
distributed I/O.
PROFIBUS PA
PA stands for Process Automation and increases the range of usage of the PROFIBUS DP
family to include the field of process engineering. Process engineering refers to both the
intrinsically safe sectors of the chemicals industry and to the non-intrinsically safe sectors,
such as nuclear power plant automation, the food industry and waste water technology.
Redundant systems
Redundant systems are characterized by the multiple (redundant) presence of important
automation components. If a redundant component fails there the processing of the program
is not interrupted.
Reference potential
The potential to which voltages of participating circuits are referenced when they are viewed
and/or measured.
Schedule
The time at which an FF device transmits or reads cyclic data is defined in the schedule for
the FOUNDATION Fieldbus. The schedule prevents conflicts on the FF segment during
publisher/subscriber communication.
Segment
A segment or bus segment is a self-contained section of a serial bus system.
Glossary
Compact FF Link
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Operating Instructions, 03/2015, A5E35651552-AA
