ABB FPBA-01 User Manual

Also see for FPBA-01 PROFIBUS DP: User manual Quick installation and start-up guide Quick installation and start-up guide

Contents

ABB FPBA-01 User Manual Manual pdf 55 page image

Communication profiles55The PROFIdrive communication profileThe Control Word and the Status WordThe Control Word (PROFIBUS Parameter 967) is the principalmeans for controlling the drive from a fieldbus system. It is sent bythe fieldbus master station to the drive through the adaptermodule. The drive switches between its states according to the bit-coded instructions on the Control Word, and returns statusinformation to the master in the Status Word (PROFIBUSParameter 968).The contents of the Control Word and the Status Word aredetailed in Tables 4 and 5 respectively; see the drivedocumentation for information on the drive-specific bits. The drivestates are presented in the PROFIBUS State Machine (Figure 4).The drive states for positioning mode are presented in Figure 5.ReferencesABB drives can receive control information from multiple sourcesincluding analogue and digital inputs, the drive control panel and acommunication module (e.g. FPBA-01). In order to have the drivecontrolled through PROFIBUS, the communication module mustbe defined as the source for control information, e.g. Reference.References in speed control modeIn speed control mode, references are 16-bit or 32-bit wordscontaining a sign bit and a 15-bit or 31-bit integer. A negativereference (indicating reversed direction of rotation) is formed bycalculating the twoís complement from the corresponding positivereference.A 16-bit speed reference (REF or NSOLL_A) in hexadecimal(0 Ö 4000h) corresponds to 0 Ö 100% of Maximum Reference(as defined by a drive parameter).A 32-bit speed reference (NSOLL_B) in hexadecimal(0 Ö 4000 0000h) corresponds to 0 Ö 100% of MaximumReference (as defined by a drive parameter).