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Modbus holding register addresses
The table below shows the default Modbus holding register addresses for drive
data.
This profile provides a converted 16-bit access to the data.
Register data (16-bit words)Register address
Control word. See section Control Word (page 613).
The selection can be changed using parameter 58.101 Data I/O 1.
400001
Reference 1 (REF1).
The selection can be changed using parameter 58.102 Data I/O 2.
400002
Reference 2 (REF2).
The selection can be changed using parameter 58.103 Data I/O 3.
400003
Status Word (SW). See section Status Word (page 615).
The selection can be changed using parameter 58.104 Data I/O 4.
400004
Actual value 1 (ACT1).
The selection can be changed using parameter 58.105 Data I/O 5.
400005
Actual value 2 (ACT2).
The selection can be changed using parameter 58.106 Data I/O 6.
400006
Data in/out 7...24.
Selected by parameters 58.107 Data I/O 7 ... 58.124 Data I/O 24.
400007...400024
Unused400025...400089
Error code access. See section Error code registers (holding registers
400090…400100) (page 625).
400090...400100
Parameter read/write.
Parameters are mapped to register addresses according to parameter
58.33 Addressing mode.
400101...465536
The Transparent profile
The Transparent profile enables a customizable access to the drive.
The contents of the control word are user-definable. The control word received
from the fieldbus is visible in parameter 6.5 EFB transparent control word, and
can be used to control the drive using pointer parameters and/or application
programming.
The status word to be sent to the fieldbus controller is selected by parameter
58.30 EFB status word transparent source. This can be, for example, the
user-configurable status word in 6.50 User status word 1.
The Transparent profile involves no data conversion of the control or status word.
Whether references or actual values are scaled depends on the setting of
parameters 58.26...58.29. The references received from the fieldbus are visible in
parameters 3.9 EFB reference 1 and 3.10 EFB reference 2.
620 Fieldbus control through the embedded fieldbus interface (EFB)