Lumel P30U series - 5.2. Messages after switching on the power

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 M–reddiode–fullinternalmemoryindicatororwritingfile
  to SD/SDHC memory indicator, when the internal
  memory usage exceeds 95%, the diode is
  constantly on, if  the transducer operates
  withaninstalledmemorycard,thentheLEDflashes
  whendataisbeingwrittenonthecard.
 A1–reddiode–indicatorofswitchingonthefirstalarm 
 A2–reddiode–indicatorofswitchingonthesecondalarm
  or24Vd.c.powersupply
Powerindicator–greendiode.
5.2. Messages after switching on the power
After connecting external signals and switch the power supply
on which is signalled with a green LED (power indicator), the transdu-
cer displays the type, current firmware version and the serial number.
If the transducer is equipped with Ethernet interface (P30U-X2XXXXXX)
IP address is displayed after serial number (stored in memory or recei-
ved from the DHCP server).
Fig.5. Fig.5. Start-up messages of a transducer not equipped
with an Ethernet interface.
Fig.6. Start-up messages of a transducer equipped with an Ether-
net interface.