![background image](http://html1.mh-extra.com/html/ifm/ac422s/ac422s_original-operating-instructions_620684009.webp)
9
UK
3: Navigation buttons
4: AS-i bus und FE connection X1
5: 24V device voltage supply X2
6: Connection for 24V Safe-IO voltage supply and local inputs/outputs X4
7: Front fl ap
8: Slot for SD card
9: Confi guration interface X3
10: Confi guration interface X8
11: Ethernet/IP interface IN X7
12: Ethernet/IP interface OUT X8
6.2 LED indicators
6.2.1 Device LED H1
The LED on the front panel signals the state of the device and the connected
systems.
LED status
Description
Green LED on:
> Device has been started.
> There is no warning message.
> There is no error message.
Yellow LED flashes slowly (0.5 Hz):
> There is a warning message.
> There is no error message.
Red LED flashes quickly (2 Hz):
> There is an error message.
6.2.2 Interface LEDs on X6, X7
LED status
Description
Green LED on:
> Physical connection OK
LED yellow flashes:
> Reception of data
6.2.3 Interface LED on X8
LED status
Description
Yellow LED on:
> Physical connection OK
LED green flashes:
> Reception of data