448 Fieldbus control through the embedded fieldbus interface (EFB)
58.26
EFB ref1 type
and
58.27
EFB ref2 type
. See section
About the control profiles
on page
425
.
Actual values
Fieldbus actual signals (ACT1 and ACT2) are 16-bit or 32-bit signed integers. They
convey selected drive parameter values from the drive to the master. Whether the
actual values are scaled or not depends on the settings of
58.28
EFB act1 type
and
58.29
EFB act2 type
. See section
About the control profiles
on page
425
.
About the control profiles
A control profile defines the rules for data transfer between the drive and the fieldbus
master, for example:
• if control word and status word are converted and how
• if signal values are scaled and how
• functionality and content of certain objects in section
Object dictionary
on
page
465
).
You can configure the drive to receive and send messages according to one of the
four profiles:
• CiA 402
• ABB Drives
• Transparent 16
• Transparent 32
For the ABB Drives and CiA 402 profiles, the embedded fieldbus interface of the drive
converts the fieldbus data to and from the native data used in the drive. The
Transparent profiles perform no data conversion, but the Transparent 16 profile may
optionally scale the reference and actual values with a configured scaling value
(
58.24
Transparent 16 scale
).
CiA 402 profile
Control Word for the CiA 402 profile
Control word of the CiA 402 profile can be written to the object 6040h.
The table below shows the contents of the fieldbus Control Word for the CiA 402
control profile. The embedded fieldbus interface converts this word to the form in
which it is used in the drive.
Bit
Name
0
Switch on
1
Enable voltage
2
Quick stop
3
Enable operation
4...6
Operation -mode specific
ACS380 FW.book Page 448 Friday, May 4, 2018 4:18 PM
ghv Vertriebs-GmbH
| Am Schammacher Feld 47 | 85567 Grafing | T 49 80 92 81 89 0 | [email protected] |
www.ghv.de
