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
0
0
1
1
Evaluating the key-operated switch by means of system functions
The keyswitch is an operator control of the KTP700F Mobile and of the KTP900F Mobile. For example, the keyswitch can be
used to lock certain functions. Evaluation is run as soon as the HMI device is connected to a connection box.
The following table shows the bit assignment for the tag of the keyswitch:
Bit 1
0
0
1
Note
If you use a tag of the "Boolean" type for the keyswitch, the following assignment applies:
Status "0": Central position of the keyswitch
•
Status "1": Keyswitch turned clockwise or counter-clockwise to the stop
•
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
0
1
The following table shows the bit assignment for the LED tags of the illuminated pushbuttons:
Bit n+ 1
0
0
1
1
KTP700F Mobile HW, KTP700F Mobile HW/OR
A5E44033674-AA, 08/2018
Bit n
0
1
0
1
Bit 0
0
1
0
Status of the illuminated pushbutton
Not pressed
Pressed
Bit n
0
1
0
1
LED status
Off
Flashing quickly
Flashing slowly
ON, continuous
Key position
Central position
Turned in clockwise direction up to stop
Turned counter-clockwise up to stop
LED status
Off
Flashing quickly
Flashing slowly
ON, continuous
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