Appendix A – Fieldbus control316The fieldbus control interfaceThe cyclic communication between a fieldbus system and the drive consists of 16/32-bit input and output data words. The drive supports at the maximum the use of 12data words (16-bit) in each direction.Data transmitted from the drive to the fieldbus controller is defined by parameters52.01…52.12 (FBA DATA IN) and data transmitted from the fieldbus controller to thedrive is defined by parameters 53.01…53.12 (FBA DATA OUT).The Control Word and the 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.Fieldbus moduleFieldbusFieldbus networkspecificinterfaceDATAOUT 2)4)123…12DATAIN 2)5)123…12FBA MAIN SWFBA ACT1FBA ACT2Par. 01.01…99.13FBA MAIN CWFBA REF1FBA REF2Par. 10.01…99.13FBA profile1) See also other parameters which can be controlled by the fieldbus.2) The maximum number of used data words is protocol-dependent.3) Profile/instance selection parameters. Fieldbus module specific parameters. For more information, see theUser’s Manual of the appropriate fieldbus adapter module.4) With DeviceNet the control part is transmitted directly.5) With DeviceNet the actual value part is transmitted directly.Profileselect3)Profileselect3)Parametertable10.01EXT1/EXT2Start Func/10.0424.01/32.01Speed/TorqueREF1 Sel/32.0224.02/32.01Speed/TorqueREF2 Sel/32.0253.01/…/53.12DATA OUTselect52.01/…/52.12DATA INselect4)5)1)Cyclic communicationAcyclic communicationSee the manual of the fieldbusadapter module.
