Siemens SIMATIC HMI KTP400 Basic Operating Instructions Manual page 125

Half Brightness Life Time
Time period after which brightness is reduced to 50% of the original value. The specified
value depends on the operating temperature.
HMI device
HMI devices are used to operate and monitor machinery and plants. The machine or plant
states are visualized on the HMI device by means of graphic objects or signal lamps. The
operator controls of the HMI device enable intervention in machine or plant processes and
sequences.
HMI device image
The HMI device image is a file that can be transferred from the configuring PC to the HMI
device. The HMI device image contains the operating system of the HMI device , including
the elements of the Runtime software required for the executable project file.
I/O field
Enables the input or output of values on the HMI device and their transfer to the PLC.
Infotext
A configured infotext provides information about objects within a project. An alarm infotext,
for example, can contain information on the cause and troubleshooting of faults.
Object
An object is a project element such as a screen or an alarm. Objects are used to view or
enter texts and values on the HMI device.
Operating element
An operating element is a project component that is used to enter values and trigger
functions. An operating element is a button, for example.
Plant
General term referring to machinery, processing centers, systems, plants and processes
which are operated and monitored using an HMI device.
Basic Panels 2nd Generation
Operating Instructions, 10/2016, A5E33293231-AB
Glossary
125