Siemens SIMATIC ET 200eco PN M12-L System Manual page 90

PROFINET IO device
Distributed field device that can be assigned to one or more IO controllers (for example
distributed I/O system, valve terminals, frequency converters, switches).
PROFINET IO
Communication concept for the realization of modular, distributed applications in the
framework of PROFINET.
Reference potential
Potential from which the voltages of the circuits involved are observed and/or measured.
SELV
Safety Extra Low Voltage = potential-free safety extra-low voltage
TIA Portal
Totally Integrated Automation Portal
TIA Portal is the key to the full performance capability of Totally Integrated Automation. The
software optimizes operating, machine and process sequences.
Distributed I/O system ET 200eco PN M12-L
System Manual, 06/2021, A5E48753295-AC
Glossary
89