The Profidrive Communication Profile; The Control Word And The Status Word; References; References In Speed Control Mode - ABB FPBA-01 User Manual

The PROFIdrive communication profile

The Control Word and the Status Word

The Control Word (PROFIBUS Parameter 967) is the principal
means for controlling the drive from a fieldbus system. It is sent by
the fieldbus master station to the drive through the adapter
module. The drive switches between its states according to the bit-
coded instructions on the Control Word, and returns status
information to the master in the Status Word (PROFIBUS
Parameter 968).
The contents of the Control Word and the Status Word are
detailed in Tables
documentation for information on the drive-specific bits. The drive
states are presented in the PROFIBUS State Machine (Figure 4).
The drive states for positioning mode are presented in Figure 5.

References

ABB drives can receive control information from multiple sources
including analogue and digital inputs, the drive control panel and a
communication module (e.g. FPBA-01). In order to have the drive
controlled through PROFIBUS, the communication module must
be defined as the source for control information, e.g. Reference.

References in speed control mode

In speed control mode, references are 16-bit or 32-bit words
containing a sign bit and a 15-bit or 31-bit integer. A negative
reference (indicating reversed direction of rotation) is formed by
calculating the two's complement from the corresponding positive
reference.
A 16-bit speed reference (REF or NSOLL_A) in hexadecimal
(0 ... 4000h) corresponds to 0 ... 100% of Maximum Reference
(as defined by a drive parameter).
A 32-bit speed reference (NSOLL_B) in hexadecimal
(0 ... 4000 0000h) corresponds to 0 ... 100% of Maximum
Reference (as defined by a drive parameter).
4 and 5 respectively; see the drive
Communication profiles
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