ABB ACS355 - Page 313

Fieldbus control with embedded fieldbus 313
group number, while the tens and ones correspond to the parameter number
within a group.
The register addresses that do not correspond with drive parameters are invalid.
If there is an attempt to read or write invalid addresses, the Modbus interface returns
an exception code to the controller. See Exception codes on page 314.
The following table gives information on the contents of the Modbus addresses
40001…40012 and 40031…40034.
Note: Parameter writes through standard Modbus are always volatile, ie modified
values are not automatically stored to the permanent memory. Use parameter 1607
PARAM SAVE to save all changed values.
Modbus register Access Information
40001 Control word R/W Control word. Supported only by the ABB drives profile,
ie when 5305 EFB CTRL PROFILE setting is ABB DRV
LIM or ABB DRV FULL. Parameter 5319 EFB PAR 19
shows a copy of the Control word in hexadecimal
format.
40002 Reference 1 R/W External reference REF1. See section Fieldbus
references on page 308.
40003 Reference 2 R/W External reference REF2. See section Fieldbus
references on page 308.
40004 Status word R Status word. Supported only by the ABB drives profile,
ie when 5305 EFB CTRL PROFILE setting is ABB DRV
LIM or ABB DRV FULL. Parameter 5320 EFB PAR 20
shows a copy of the Control word in hexadecimal
format.
40005
…
40012
Actual 1…8 R Actual value 1…8. Use parameter 5310… 5317 to
select an actual value to be mapped to Modbus register
40005…40012.
40031 Control word LSW R/W 0301 FB CMD WORD 1, ie the least significant word of
the DCU profile 32-bit Control word.
Supported only by the DCU profile, ie when 5305 EFB
CTRL PROFILE setting is DCU PROFILE.
40032 Control word MSW R/W 0302 FB CMD WORD 2, ie the most significant word of
the DCU profile 32-bit Control word.
Supported only by the DCU profile, ie when 5305 EFB
CTRL PROFILE setting is DCU PROFILE.
40033 Status word LSW R 0303 FB STS WORD 1, ie the least significant word of
the DCU profile 32-bit Status word.
Supported only by the DCU profile, ie when 5305 EFB
CTRL PROFILE setting is DCU PROFILE.
40034 ACS355 Status
word MSW
R 0304 FB STS WORD 2, ie the most significant word of
the DCU profile 32-bit Status word.
Supported only by the DCU profile, ie when 5305 EFB
CTRL PROFILE setting is
DCU PROFILE.