Description
Function name
Code
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 Registers
17h
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
and
•
03h: Vendor URL (“
”)
•
04h: Product name (for example,
“ACS880”)
Exception codes
The table below shows the Modbus exception codes supported by the embedded
fieldbus interface.
Description
Name
Code
The function code received in the query is not an
allowable action for the server.
ILLEGAL FUNCTION
01h
The data address received in the query is not an
allowable address for the server.
ILLEGAL DATA ADDRESS
02h
The requested Quantity of Registers is larger than
the drive can handle.
ILLEGAL DATA VALUE
03h
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
(holding registers 400090…400100) (page 726)
.
SLAVE DEVICE FAILURE
04h
The server is engaged in processing a long-dura-
tion program command.
SLAVE DEVICE BUSY
06h
Fieldbus control through the embedded fieldbus interface (EFB) 723
Содержание ACS880 Series
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