You can use both multimode fiber-optic cables and single-mode fiber-optic cables as fiber-optic
cables for PROFINET networks. Typical manufacturer variants are:
● GOF -
Glass
Optical Fibers
● POF -
Plastic Optical Fibers or POFs are fiber-optic cables made of plastic.
Firmware update
Upgrade of firmware for devices or modules (interface modules, I/O modules etc.) to the newest
firmware version (update), for example after enhancement of functions.
Functional ground
Functional ground is a low-impedance current path between electric circuits and ground. It is
not designed as a safety measure but instead, for example, as a measure to improve
interference immunity.
Gate control
The gate control system determines when pulses are acquired. The behavior of the gate control
system depends on the operating mode of the counter.
● "Counter" mode: The gate control system determines when count pulses are acquired.
● "Frequency measurement" operating mode: The measuring window in which the pulses are
captured is defined with the gate control system.
GOF
GOF -
Glass
Optical Fibers
-> Fiber-optic cables
Ground
All interconnected, inactive parts of a piece of equipment that cannot accept any dangerous
contact voltage, even in the event of a fault.
Grounding
Grounding means connecting an electrically conductive part to a grounding electrode by
means of a grounding system.
GSD file
The file contains all properties of a PROFIBUS device that are necessary for its configuration.
GSML file
The file contains all properties of a PROFINET device that are necessary for its configuration.
Glossary
SIMATIC CFU
208 Commissioning Manual, 08/2019, A5E39252870-AD
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