344 Fieldbus control with fieldbus adapterFieldbus control interfaceThe communication between a fieldbus system and the drive consists of 16-bit inputand output data words. The drive supports at the maximum the use of 10 data wordsin each direction.Data transformed from the drive to the fieldbus controller is defined by parametergroup 54 FBA DATA IN and data transformed from the fieldbus controller to the driveis defined by parameter group 55 FBA DATA OUT. Control word and Status wordThe Control word (CW) is the principal means of controlling the drive from a fieldbussystem. The Control word is sent by the fieldbus controller to the drive. The driveswitches between its states according to the bit-coded instructions of the Controlword.The Status word (SW) is a word containing status information, sent by the drive to thefieldbus controller.Start, stop,dir selectREF1 selectREF2 select4 = Status word 1)5 = ACT1 1)6 = ACT2 1)Par. 0101…99151001/1002110311061 = Control word 1)2 = REF1 1)3 = REF2 1)Par. 0101…9915NOT SEL…2) COMMData inselect5401/…/54105501/…/5510Data outselectDATA IN1…10DATAOUT1…10Fieldbus-specificinterfaceFieldbus moduleFieldbus network1) Some fieldbus adapters map this data automatically. Forthe use of virtual addresses, see the user's manual ofthe appropriate fieldbus adapter.2) See also other COMM selection parameters.KEYPAD…2) COMMKEYPAD…2) COMM
