Glossary
Mobile Panels 2nd Generation
Operating Instructions, 09/2018, A5E33876626-AC
279
A screen is a form of visualization of all logically related process data of a plant. The
visualization of the process data can be supported by graphic objects.
STEP 7 is the programming software for SIMATIC S7, SIMATIC C7 and SIMATIC WinAC
PLCs.
A symbolic I/O field is a field for the input or output of a value. Contains a list of default
entries from which one can be selected.
A system event is assigned to the "System" alarm class. A system event refers to internal
states on the HMI device and the PLC.
Defined memory location to which values can be written to and read from. This can be done
from the PLC or the HMI device. Based on whether the tag is interconnected with the PLC or
not, we distinguish between "external" tags (process tags) and "internal" tags.
Telnet is the name of a network protocol widely used on the Internet. The client-server
protocol is based on character-based data exchange over a TCP connection. Programs that
implement the function of the terminal device are also frequently called Telnet.
Transfer of a runtime project from the configuration PC to the HMI device.
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