ABB ACS850 - About the EFB Communication Profiles

Control through the embedded fieldbus interface 321
About the EFB communication profiles
A communication profile defines the rules for data transfer between the drive and the
fieldbus master, for example:
• if packed boolean words are converted and how
• if signal values are scaled and how
• how drive register addresses are mapped for the fieldbus master.
You can configure the drive to receive and send messages according to one of the
four profiles: the ABB Drives classic profile, ABB Drives enhanced profile, DCU 16-bit
profile or DCU 32-bit profile. For either one of the ABB Drives profile, the embedded
fieldbus interface of the drive converts the fieldbus data to and from the native data
used in the drive. Both DCU profiles are transparent, that is, no data conversion is
done. The figure below illustrates the effect of the profile selection.
Profile selection
Communication profile selection with parameter 58.06 Control profile is:
• ABB Classic
• ABB Enhanced
• DCU 16-bit
• DCU 32-bit
58.06
SEL
Data
conv. &
scaling
0
1
2
3
Fieldbus
Drive