Siemens SIMATIC ET 200AL System Manual page 215

Glossary
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.
S7-PCT
S7-Port Configuration Tool = Siemens program for configuring IO-Link devices.
SELV
Safety Extra Low Voltage
TIA Portal
Totally Integrated Automation Portal
The TIA Portal is the key to the full performance capability of Totally Integrated Automation.
The software optimizes operating, machine and process sequences.
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IO-Link I/O modules
System Manual, 08/2021, A5E48755395-AB