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348 Fieldbus control through the embedded fieldbus interface (EFB)
emergency stop, selection between external control locations 1/2, or fault
reset). The drive switches between its states according to the bit-coded
instructions of the CW.
The fieldbus CW is either written to the drive as it is or the data is converted.
See section
About the control profiles
The fieldbus Status Word (SW) is a 16-bit or 32-bit packed boolean word. It
contains status information from the drive to the fieldbus controller. The drive
SW is either written to the fieldbus SW as it is or the data is converted. See
section
About the control profiles
References
The references are provided by MPPT and does not depend on any user settings.
For more information on MPPT, see chapter
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
and
EFB act1 type
350).
Data input/outputs
Data input/outputs are 16-bit or 32-bit words containing selected drive
parameter values. Parameters
addresses from which the master either reads data (input) or to which it writes
data (output).
Register addressing
The address field of Modbus requests for accessing holding registers is 16 bits.
This allows the Modbus protocol to support addressing of 65536 holding
registers.
Historically, Modbus master devices used 5-digit decimal addresses from 40001
to 49999 to represent holding register addresses. The 5-digit decimal
addressing limited to 9999 the number of holding registers that could be
addressed.
(page 350).
type. See section
58.29 EFB act2
58.101 Data I/O 1
(page 350).
Flow calculation
About the control profiles
...
58.114 Data I/O 14
on page 45.
58.28
(page
define the
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