Bronkhorst DeviceNet slave interface Manuel d'utilisateur télécharger pdf (Page 26)

BRONKHORST®

Page26DeviceNetinterface   9.17.026

4.4.2 Override

TheOverrideattributeisimplementedasfollows:



Override ValuetoValve

0(Normal) setbyattribute6(ActuatorValue)

1(Close) 0

2(Open) max.value

3(Hold) lastusedvalue

4(Safestate) Seesection4.4.3.



4.4.3 Safestate

Inthefollowi ngtabletheimplementedvaluesoftheValveoutputareshown.MappingSafestate:



Safestate ValuetoValve

0(zero/off) 0

1(fullscale/on) max.value

2(holdlastvalue) lastusedvalue

3(usesafevalue) Safevalue(obj0x32,attr0x16)



4.5 GASCALIBRATIONOBJECTINSTANCE

4.5.1 Gasstandardnumber

The retrieval of the gas standard number is implemented as follows: the first 2 characters of the fluid name are

interpretedasadecimalnumber.Thisnumberisreturnedasthegasstandardnumber.



4.5.2 GasSymbol

ThefluidnameisreturnedastheGasSymbol.

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4.6 NETWORKERRORDETECTION

WhenanetworkerrorisdetectedwhilethedeviceisinExecutingstate,itissetbacktotheIdleorCriticalFaultstate.

InthosestatesthevalveissettotheSafestate(seeattributeSafeStateinAnalogActuatorobject).Whenthedevice

detectsthatnobuspower

isavailable,thenetworkisclosedandnocommunicationisstarteduntilthebuspoweris

detectedagain.



SucherrorsareshownbytheLED’sontheinstrument.Seethechapter“Troubleshooting”

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Bronkhorst DeviceNet slave interface Manuel d'utilisateur Page 26