ABB ACS280 Firmware Manual page 358

Fieldbus control through the embedded fieldbus interface (EFB)
358
Modern Modbus master devices typically provide a means to access the full
range of 65536 Modbus holding registers. One of these methods is to use 6-
digit decimal addresses from 400001 to 465536. This manual uses 6-digit
decimal addressing to represent Modbus holding register addresses.
Modbus master devices that are limited to the 5-digit decimal addressing may
still access registers 400001 to 409999 by using 5-digit decimal addresses
40001 to 49999. Registers 410000-465536 are inaccessible to these masters.
For more information, see parameter
Note: Register addresses of 32-bit parameters cannot be accessed by using 5-
digit register numbers.
 About the control profiles
A control 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 two profiles:
•
ABB Drives
•
.
DCU Profile
For 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. The
DCU Profile involves no data conversion or scaling. The figure below illustrates
the effect of the profile selection.
Fieldbus
Control profile selection with parameter
• (0) ABB Drives
• (5) DCU Profile.
58.33 Addressing mode
Profile selection
Data
conversion &
scaling
58.26...58.29
.
SEL
0
5
58.25
58.25 Control profile
Drive
is: