Glossary
Glossary-5
ET 200X Distributed I/O Device
EWA 4NEB 780601602-06
Node
A device that can send, receive or amplify data via the bus, such as a DP
master, DP slave, RS 485 repeater or active star coupler.
Node address
→ PROFIBUS address
Non-isolated
In the case of non-isolated input/output modules, the reference potentials of the
control and load circuit are electrically connected.
Parameterize
Parameterizing means sending slave parameters from the DP master to the DP
slave.
PROFIBUS
PROcess FIeld BUS – German process and field bus standard that is defined in
IEC 61784-1:2002 Ed1 CP 3/1. It defines the functional, electrical and
mechanical properties of a bit-serial field bus system.
PROFIBUS is available with the protocols DP (the German abbreviation for
distributed I/O), FMS (= field bus message specification), PA (= process
automation), or TF (= technology functions).
PROFIBUS address
Each bus node must receive a PROFIBUS address to uniquely identify it on the
PROFIBUS bus system.
The PC/programming device has the PROFIBUS address ”0”.
PROFIBUS addresses 1 to 125 are permissible for the ET 200X distributed I/O
device.
Reference potential
Potential from which the voltages of the circuits involved can be observed and/or
measured.
Reversing starter
A reversing starter is a motor starter which determines a motor’s direction of
rotation. It consists of a power circuit-breaker and two contactors.
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