Led Activation (Leds) - Siemens SIMATIC C7-613 Manual

Integration into the User Program
4.5.1

LED Activation (LEDS)

Use
The LEDs in the C7-613 function keys can be activated from the user program.
This makes it possible, for example, to signal to the operator with an illuminated
LED which key he is supposed to press, depending on the situation.
Transfer
The LED image is updated each time the "HMI API" FB is called. If the C7-613 is in
STOP mode, the LEDs are switched off.
Structure
The LED image is a data area with a fixed length of two data words.
Two bits are assigned permanently to each LED in the LED image .
LED Image:
7 6 5
K8 K8 K7
The bit number (n) designates the first of two successive bits which together
control the following four different LED states :
Bit n + 1
0
0
1
1
4-22
Byte 0
4 3 2 1 0 7
K7 K6 K6 K5 K5 K4
Byte 2
Bit n
0
1
0
1
Byte 1
6 5 4 3 2 1
K10 K10 K9
K4 K3 K3 K2 K2 K1
Byte 3
LED Function
OFF
Flashing at approx. 2 Hz
Flashing at approx. 0.5 Hz
Steady light
C7-613 Control System
0
Bit Number
K9 First word
K1
Second word
A5E00138934-03