ABB ACQ80, Firmware Manual

Page: 363 / 390

Fieldbus control through the embedded fieldbus interface (EFB) 363
Exception codes
The table below shows the Modbus exception codes supported by the
embedded fieldbus interface.
17h Read/Write Multiple
Registers Writes the contents of a contiguous block of 4X
registers, then reads the contents of another
group of registers (the same or different than
those written) in a server device.
2Bh / 0Eh Encapsulated Interface
Transport
Supported subcodes:
• 0Eh Read Device Identification: Allows reading
the identification and other information.
Supported ID codes (access type):
• 00h: Request to get the basic device
identification (stream access)
• 04h: Request to get one specific identification
object (individual access)
Supported Object IDs:
• 00h: Vendor Name (“ABB”)
• 01h: Product Code (for example, “ASCLx or
ASCDx”)
• 02h: Major Minor Revision (combination of
contents of parameters
07.05 Firmware version
and
58.02 Protocol ID
).
• 03h: Vendor URL (“www.abb.com”)
• 04h: Product name: (“ACQ80”).
Code Name Description
01h ILLEGAL FUNCTION The function code received in the query is not an
allowable action for the server.
02h ILLEGAL ADDRESS The data address received in the query is not an
allowable address for the server.
03h ILLEGAL VALUE The requested quantity of registers is larger than
the device can handle. This error does not mean
that a value written to the device is outside of the
valid range.
04h DEVICE FAILURE An unrecoverable error occurred while the server
was attempting to perform the requested action.
See section
Error code registers (holding registers
400090…400100)
on page
368
.
Code Function name Description