Operating instructions

Glossary
MP 377, MP 377 PRO (WinCC flexible)
Operating Instructions, 10/2008, 6AV6691-1DR01-0AB0
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HMI device
An HMI device is a device used for the operation and monitoring of machines and plants.
The statuses of the machine or plant are indicated by means of graphic elements or by
indicator lamps on the HMI device. The operating elements of the HMI device allow the
operator to interact with the processes of the machine or plant.
HMI device image
A file that can be transferred from the configuring PC to the HMI device. The HMI device
image contains the operating system and elements of the runtime software required to
run a project.
I/O field
An I/O field enables the input or output of values on the HMI device which are transferred
to the PLC.
Infotext
An infotext is a configured information on objects within a project. Infotext for an alarm, for
example, may contain information on the cause of the fault and troubleshooting routines.
Object
An object is a component of a project. Example: screen or alarm. Objects are used to view or
enter texts and values on the HMI device.
Operating element
Component of a project used to enter values and trigger functions. A button, for example, is
an operating element.
Plant
General term referring to machines, processing centers, systems, plants and processes
which are operated and monitored on an HMI device.
PLC
A PLC is a general term for devices and systems with which the HMI device communicates,
e.g. SIMATIC S7.
PLC job
A PLC job triggers a function for the PLC at the HMI device.