MAC address
MAC address is a worldwide unique device identication that is already assigned in the factory
to each PROFINET device. Its 6 bytes are divided into 3 bytes for the manufacturer ID and 3 bytes
for the device ID (serial number). The MAC address is usually legible on the device.
Master
When a master is in possession of the token, it can send data to other nodes and request data
from other nodes (= active station). DP masters are, for example, the CPU 410-5H or the IM 308-
C. Master and devices are only available for PROFIBUS.
Media Redundancy Protocol (MRP)
The Media Redundancy Protocol (MRP) is a communication protocol that can be used for ring
topologies. In a ring topology, MRP enables switchover of communication paths if a component
fails. MRP works independently of the communication protocol used on the communication
path.
NAMUR sensor
A NAMUR sensor provides functions for monitoring cable breaks and short-circuits.
Node
Device that can send, receive or amplify data via the bus, for example, DP master, DP device,
RS 485 repeater.
Non-isolated
For non-isolated I/O modules, the reference potentials of the control and load circuits are
electrically connected.
Parameter assignment
Parameter assignment is the setting of parameters and the transfer of the parameter-
assignment data to the interface module of the distributed I/O.
PCS 7-OS
Operator Station (operator control and monitoring system) for the SIMATIC PCS 7 or PCS neo
process control system.
PELV
Protective Extra Low Voltage
Glossary
ET 200iSP
468 Operating Instructions, 11/2022, A5E00247483-AK
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