References; Scaling - ABB FCAN-01 User Manual

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References

References are 16-bit words containing a sign bit and a 15-bit
integer. A negative reference (indicating reversed direction of
rotation) is formed by calculating the two's complement from the
corresponding positive reference.
ABB drives can receive control information from multiple sources
including analogue and digital inputs, the drive control panel and
a communication module (for example, FCAN-01). In order to
have the drive controlled through the fieldbus, the module must be
defined as the source for control information, for example,
reference.

Scaling

References are scaled as shown below.
Note: The values of REF1 MAX and REF2 MAX are set with drive
parameters. See the drive manuals for further information.
Fieldbus
Communication profiles
REF2: 10000
REF1: 20000
0
REF2: -10000
REF1: -20000
Drive
REFx MAX
REFx MIN
-(REFx MIN)
-(REFx MAX)