Controlling The Leds Of The Function Keys By Means Of System Functions; Controlling And Evaluating The Illuminated Pushbutton By Means Of System Functions - Siemens SIMATIC HMI Series Operating Instructions Manual

6.5.3

Controlling the LEDs of the function keys by means of system functions

LEDs are integrated in the HMI device's function keys. The connected PLC can control the
integrated LEDs. For example, the LED signals to the operator that they should or can
operate the corresponding function key during project runtime.
The following table shows the possible states of the LEDs and the corresponding entries in
bit n+1 and bit n of the LED tags.
6.5.4 Controlling and evaluating the illuminated pushbutton by means of system
functions
The illuminated pushbuttons are operator controls of the HMI device. The connected PLC
can control the integrated LEDs. For example, the LED signals to the operator that they
should or can operate the corresponding illuminated pushbutton. Evaluation is run as soon
as the HMI device is connected to a connection box.
The following table shows the bit assignment for the status tags of the illuminated
pushbuttons:
The following table shows the bit assignment for the LED tags of the illuminated
pushbuttons:
Mobile Panels 2nd Generation
Operating Instructions, 09/2018, A5E33876626-AC
6.5 Controlling and evaluating operator controls and display elements
Bit n+ 1 Bit n
0 0
0 1
1 0
1 1
Bit 0 Status of the illuminated pushbutton
0 Not pressed
1 Pressed
Bit n+ 1 Bit n
0 0
0 1
1 0
1 1
LED status
Off
Flashing quickly
Flashing slowly
ON, continuous
LED status
Off
Flashing quickly
Flashing slowly
ON, continuous
Configuring the Mobile Panel
187