Controlling And Evaluating Operator Controls And Display Elements; Overview; Evaluating Operator Controls As Direct Keys - Siemens SIMATIC HMI Series Operating Instructions Manual

Configuring the Mobile Panel

6.5 Controlling and evaluating operator controls and display elements

6.5 Controlling and evaluating operator controls and display elements
6.5.1

Overview

The following information can be transferred between the HMI device and the PLC
depending on the configuration of your HMI device:
● Status of the function keys
● Status of the keyswitch
● State of the illuminated pushbuttons
● Status of the LEDs of function keys and illuminated pushbuttons
Note
The status of the function keys and corresponding LEDs is communicated as soon as a
corresponding project has started on the HMI device.
The status of the keyswitch, illuminated pushbuttons and corresponding LEDs is
communicated as soon as the HMI device is connected to a connection box.
The options for transmitting information are as follows:
● Direct keys
These are described in "Evaluating operator controls as direct keys (Page 184)".
● System functions of WinCC
These are described in
"Controlling the LEDs of the function keys by means of system functions (Page 187)".
6.5.2

Evaluating operator controls as direct keys

You can configure the operator controls of the HMI device as direct keys. The states of the
following operator controls are available directly in the I/O area of the PLC:
● The switching state of the function keys
● The switching state of the keyswitch
● The switching state of the illuminated pushbuttons
Byte assignment
The tables below show the assignment of the key inputs and LED outputs to the bytes in the
PLC process image. Refer to your plant documentation for additional information.
184
Mobile Panels 2nd Generation
Operating Instructions, 09/2018, A5E33876626-AC