4. Device installation | 4.3 - Hardware construction | 83
4.3.11.1 LEDs
Identif. Description
NS Network status LED
MS Module status LED
grn Green: flashes when
there is data traffic (ac
tivity)
yel Yellow: lights up when
there is an existing con
nection (link)
Network status (NS)
LED status Description Comments
Off Module is offline.
– No power
– No connection to the I/Ocon
troller
Constant green Module is online (RUN).
– There is a connection to the
I/Ocontroller.
– I/Ocontroller is operational
(RUN status).
1Hz flashing green Module is online (STOP).
– There is a connection to the
I/Ocontroller.
– I/Ocontroller is not operational
(STOP status).