
BRONKHORST®
Page40DeviceNetinterface 9.17.026
12 TROUBLESHOOTING
12.1 LEDINDICATIONS
LEDindicationscanbeveryusefulincaseofproblemswiththeinstrument.
ThegreenLED is normally usedforinstrumentstatusindication,likenormaloperationor specialfunctionmode. For
DeviceNetitisalsopossibletoshowthattheinstrumentisinabortstateandidlestate.TheredLED isnormallyused
toforerror/warningindication(howlongertheflash,howgreaterthetrouble).
12.1.1 LEDindicationsmode(MBC‐IIandMBC3)
Led Time Indication
Green
off Continuous Power‐offorprogramnotrunning
on Continuous Normalrunning/operationmode
Short
flash
0.1secon
2.0secoff
InitializationmodeAbortstate
Securedparamscanbechanged
normal
flash
0.2secon
0.2secoff
Specialfunctionmode
Instrumentisbusyperforminganyspecialfunction.
E.g.auto‐zeroorself‐test
longflash 2.0secon
0.1secoff
idlestate
Red
off Continuous Noerror
Short
flash
0.1secon
2.0secoff
Minorcommunication error
normal
flash
0.2secon
0.2secoff
Nobuspower
longflash 2.0secon
0.1secoff
Seriouscommunication error
manualinterventionneeded
longflash 1.0secon
0.1secoff
Forspecialservicepurposeonly
on Continuous Criticalerrormessage.
Aseriouserroroccurredintheinstrument.
Instrumentneedsservicebeforefurtherusing.
WinkMode
Green
Red
Green
Red turnbyturn
slow
wink
0.2secon
0.2secoff
Winkmode
ByacommandsendviaFLOW‐BUStheinstrumentcan“wink”withLed’stoindicateits
positionina(large)system
normal
wink
1.0secon
1.0secoff
Alarmindication:minimumalarm,limit/maximumalarm;power‐upalarmorlimitexceededor
batchreached.
fast
wink
0.1secon
0.1secoff
Switch‐released,selectedactionstarted
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