Siemens SIMATIC HMI series User Manual

Configuring the Mobile Panel
6.5 Controlling and evaluating operator controls and display elements
Mobile Panels 2nd Generation
Operating Instructions, 09/2018, A5E33876626-AC
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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.
Bit n+ 1
Bit n
LED status
0
0
Off
0 1 Flashing quickly
1
0
Flashing slowly
1
1
ON, continuous
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:
Bit 0
Status of the illuminated pushbutton
0
Not pressed
1
Pressed
The following table shows the bit assignment for the LED tags of the illuminated
pushbuttons:
Bit n+ 1
Bit n
LED status
0
0
Off
0
1
Flashing quickly
1
0
Flashing slowly
1
1
ON, continuous

Siemens SIMATIC HMI series Specifications

General

Series	SIMATIC HMI
Category	Control Panel
Display Type	TFT LCD
Touch Screen	Yes (resistive or capacitive, depending on model)
Processor	Varies by model (e.g., ARM-based processors)
Storage	Varies by model (e.g., Flash memory, microSD card slot)
Communication Interfaces	Ethernet, USB
Protection Class	IP65 (front panel), depending on model
Operating Temperature	0 to 50°C, -20 to 60°C
Power Supply	24 V DC
Memory	128 MB, 256 MB