Siemens SIRIUS M200D Manual page 191

N conductor (neutral conductor)
EN 60947-1: A conductor connected to the center point or neutral point of the system and
designed to transfer electrical energy. EN 60050-141: Conductor in a multi-phase cable that
is connected to the neutral point N ) of a multi-phase combination.
PE (protective conductor)
● EN 60947-1: Conductor required for certain measures to protect against electric shock to
establish an electrical connection between the following components:
– Components of the electrical equipment
– External, conductive components
– Main grounding terminal
– Ground electrode
– Grounded point in the current source or artificial neutral point
● EN 60050-195: Conductor for safety purposes (e.g. to protect against electric shock).
PII/PIO
Process input image/process output image
Process image
Image of the signal states of the digital inputs and outputs in the memory of a controller.
PROFIBUS
PROFIBUS stands for "process fieldbus". PROFIBUS is a manufacturer-independent
standard to network the field devices (e.g. PLCs, actuators, final controlling elements and
sensors). PROFIBUS is compatible with protocols such as DP (decentralized peripherals),
FMS (fieldbus message specification) and PA (process automation).
PROFIenergy
The PROFINET profile supports energy management systems in process plants by reading
out measured values or by, for example, briefly shutting down the entire plant during breaks
via standardized PROFIenergy commands.
PROFINET
This is an open component-based industrial communication system based on Ethernet for
distributed automation systems. Communications technology required by the PROFIBUS
User Organization.
M200D AS-Interface Standard
Manual, 08/2014, A5E02548958A/RS-AA/004
Glossary
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