Fieldbus control with embedded fieldbus 325
Register mapping
The drive parameters, Control/Status word, references and actual values are mapped
to the area 4xxxx so that:
• 40001…40099 are reserved for drive control/status, reference and actual values.
• 40101…49999 are reserved for drive parameters 0101…9999 (eg, 40102 is
parameter 0102). In this mapping, the thousands and hundreds correspond to the
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 327.
The following table gives information on the contents of the Modbus addresses
40001…40012 and 40031…40034.
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 320.
40003 Reference 2 R/W External reference REF2. See section Fieldbus
references on page 320.
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.
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