Serial essernet
®
interface (SEI1)
FB 798819 / 05.18 51
10 Serial essernet
®
interface - overview
10.1 LED indicator
Three LED provide information about the status of the serial essernet
interface.
Trouble / Fault
Power
essernet
®
serial essernet
®
interface
1
2
3
Fig. 6: LED indicator - Beispiel im Gehäuse (Art.-Nr. 788606)
red
LED (V11) lit: system failure
flashing: no message via the essernet
yellow
LED (V12) lit: EEPROM program failure
flashing: communication has been interrupted for more than
approx. 15 minutes (red LED V11 trouble/fault lit)
flashes briefly: every 50 to 60 sec. normal operation
green
LED (V13) lit: Operation
(power supply on)
flashing: Fault
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