KL4414, KL4424 - Product Overview
KL4414, KL4418, KL4424, KL4428
10
Version: 3.0.0
2.3
Diagnostic LEDs
The four green RUN LEDs indicated the operating state of the terminal channels.
Fig. 3: KL4414, KL4424, - LEDs
Meaning of the LED displays
LED
Color
Channel
State
On
off
Run1
green
1
normal operation
A watchdog timer overflow has
occurred. The green LEDs go out
if no process data are transferred
between the controller and the
Bus Coupler for more than
100 ms.
Run2
2
Run3
3
Run4
4