Siemens SIMATIC FS400 Anleitung Seite 140

An LED display is also included in the receiver interface of the AS-i version. This LED
is used for displaying the status of the SIMATIC FS400 3SF7842 receiver on the AS-I
network.
a = LED AS-i
Abb. 5.2-2: Receiver AS-i status display
LED-AS-i color
Green
Red
Red/yellow
flashing
Red flashing
140
a
Meaning
Communication with the master
No communication with the
master
Address 0
Device fault
Action
New AS-i master setup
Slave waits for an address to be
assigned
Send device in