Glossary
Unified Comfort Panels
178
Operating Instructions, 03/2020, A5E46641217-AA
Screen
A screen is a form of visualization for all logically related process data in a plant. The
representation of the process data can be visually supported by graphic objects.
Screen object
A screen object refers to objects such as rectangles, input boxes or alarm views which are
configured for visualization or operation of the plant.
Tag
A tag is a defined memory location to which values can be written and from which values can
be read. This can be done from the controller or the HMI device. We distinguish between
external tags (process tags) and internal tags, depending on whether or not the tag is
interconnected with the controller.
Trade goods
In addition to their own accessories, Siemens AG also offers high-quality accessories from
well-known manufacturers as trade goods. Trade goods are qualified in a brief power-up test
but do not undergo a system test by Siemens AG. The technical properties of trade goods
can deviate from the properties guaranteed by comparable products of the Siemens AG.
Trade goods are identified as such in the online catalog of the Siemens AG. Technical
specifications, drivers, certificates, test verification documents, etc. are supplied by the
respective manufacturer to Siemens AG and are also available for download in the online
catalog or technical support of the Siemens AG.
Transfer
In "Transfer" mode, data is transferred from a configuration PC to the HMI device.
WinCC
WinCC (TIA Portal) is an engineering software for configuring SIMATIC HMI devices.
