DescriptionFunction nameCode
Writes the contents of a contiguous block of
4X registers, then reads the contents of an-
other group of registers (the same or differ-
ent than those written) in a server device.
Read/Write Multiple Registers17h
Supported subcodes:Encapsulated Interface Trans-
port
2Bh/0Eh
• 0Eh Read Device Identification: Allows
reading the identification and other inform-
ation.
Supported ID codes (access type):
• 00h: Request to get the basic device
identification (stream access)
• 04h: Request to get one specific identific-
ation object (individual access)
Supported Object IDs:
• 00h: Vendor Name (“ABB”)
• 01h: Product Code (for example, “AINFX”)
• 02h: Major Minor Revision (combination
of contents of parameters 7.5 Firmware
version and 58.2 Protocol ID).
• 03h: Vendor URL (“www.abb.com”)
• 04h: Product name (for example,
“ACS880”)
Exception codes
The table below shows the Modbus exception codes supported by the embedded
fieldbus interface.
DescriptionNameCode
The function code received in the query is not an
allowable action for the server.
ILLEGAL FUNCTION01h
The data address received in the query is not an
allowable address for the server.
ILLEGAL DATA ADDRESS02h
The requested Quantity of Registers is larger than
the drive can handle.
ILLEGAL DATA VALUE03h
Note: This error does not mean that a value writ-
ten to a drive parameter is outside the valid range.
The value written to a drive parameter is outside
the valid range. See section Error code registers
(holding registers 400090…400100) (page 625).
SLAVE DEVICE FAILURE04h
The server is engaged in processing a long-dura-
tion program command.
SLAVE DEVICE BUSY06h
Coils (0xxxx reference set)
Coils are 1-bit read/write values. Control Word bits are exposed with this data
type. The table below summarizes the Modbus coils (0xxxx reference set).
622 Fieldbus control through the embedded fieldbus interface (EFB)
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