Quickstart Guide
ABB PLC and drives integration using Modbus RTU
ModbusRT
U‐19‐ PLCanddrivesintegration
StartingupACS880driveswithFSCA01ModbusRTUadapter
Minimumrequiredparametersettings(basedonfactorydefaultsettings)
Parameter Description Setting Comment
50.01 FBAAenable Enable Activatesfieldbusmodule
51.02 PROTOCOL/PROFIL
E
ABBDrives
Classicor
Enhanced
Communicationprofile“ABBDrives”
51.03 STATIONID [Address] ModbusRTUnodeaddressofthedrive
51.04 BAUDRATE 19.2kbit/s
(example)
Transferrateofthelink.Samebaudratemustbe
definedintheModbusRTUmaster.
51.05 EFBPARITY 8NONE1
(example)
Parityandstopbits.Sameparityandstopbits
mustbedefinedintheModbusRTUmaster.
52.02 FBAdatain2 Act116bit(5) ActualspeedasDataWord2fromthedrive
53.02 FBAdataout2 Ref116bit(2) SpeedreferenceasDataWord2tothedrive
51.27 FBAparrefresh Configure Updatesfieldbussettings(groups50to57)
19.11 Ext1/Ext2selection McwBit11
(06.01)
FieldbusinterfaceassourcetoswitchtoEXT2
controllocation
20.01 Ext1commands FieldbusA Fieldbusinterfaceassourceforstartandstop
20.02 Ext1starttrigger Level TodirectlyrestartafterCoastStop(Off3)
22.11 Speedref1
selection
FBAref1 Fieldbusinterfaceassourceforspeedreference
31.11 Faultreset
selection
P.06.01bit7 Fieldbusinterfaceassourceforfaultreset
Optionalparameterse
ttings
50.02 FBAAcommloss
func
[optional] Definesthedriveoperationafterthe
communicationlossmonitoringawakes.
51.06 MODBUSTIMEOUT [optional] Timebetweencommunicationbreakdetection
andtheselectedaction.1=100ms.
51.07 TIMEOUTMODE CONTROL
WRITE
Howthedrivereactstoafieldbuscommunication
break.
51.27 FBAPARREFRESH REFRESH Updatesfieldbussettings(groups50to53)
(46.01) Speedscaling [Scale max] Maxspeed/frequencyscalingvalue(usedin
functionblock/visualizationinput
“SPEED_REF_MAX”).Mustbelessorequaltodrive
parametermaxspeed/frequency.