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Fieldbus control through the embedded fieldbus interface (EFB) 551
Basics of the embedded fieldbus interface
The cyclic communication between a fieldbus system and the drive consists of 16-bit
data words or 32-bit data words (with the transparent control profiles).
The diagram below illustrates the operation of the embedded fieldbus interface. The
signals transferred in the cyclic communication are explained further below the
diagram.
CW
REF1
REF2
SW
ACT1
ACT2
I/O 1
I/O 2
I/O 3
…
I/O 24
1. See also other parameters which can be controlled through fieldbus.
2. Data conversion if parameter
. See section
3. If parameter
is set to
,
• the sources of the status word and actual values are selected by parameters
(otherwise,
actual values 1 and 2 are automatically selected according to reference type), and
• the control word is displayed by
.
1)
Fieldbus network
Data I/O
selection
EXT1/2
Start commands
Reference
selection
Groups
22/26/28/40 etc.
Cyclic communication
Acyclic communication
SEL
Parameter
table
0
2
EFB profile
Reference
selection
Groups
22/26/28/40 etc.
…
2)
0
2
2)
EFB CW
3)
EFB SW
3)
Actual 1
3)
Actual 2
3)
Par. 01.01…255.255
Summary of Contents for ACS880-x04
Page 1: ... ABB INDUSTRIAL DRIVES ACS880 primary control program Firmware manual ...
Page 4: ......
Page 18: ...18 Using the control panel ...
Page 24: ...24 Control locations and operating modes ...
Page 112: ...112 Application macros ...
Page 496: ...496 Additional parameter data ...
Page 544: ...544 Fault tracing ...
Page 602: ...602 Control chain diagrams ...