ABB FENA-01, Protocol Manual

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Communication
38
Function Codes
The FENA-01 supports the Modbus function codes shown below.
Encapsulated Interface Transport / Read Device Identification
The FENA-01 supports the Modbus EIT/RDI objects shown below.
Function Code Name Description
03h Read Holding Registers Reads the contents of a contiguous
block of holding registers in a server
device.
06h Write Single Register Writes a single holding register in a
server device.
10h Write Multiple Registers Writes the contents of a contiguous
block of holding registers in a server
device.
17h Read/Write Multiple
Registers Writes the contents of a contiguous
block of holding registers in a server
device, then reads the contents of
of a contiguous block of holding
registers (same or different than
those written) in a server device.
2Bh/0Eh Encapsulated Interface
Transport / Read Device
Identification Allows reading identification and
other information of the server.
Parameter "Read Device ID code"
allows to define three access types:
01: Request to get the basic device
identification (stream access)
02: Request to get the regular
device identification (stream
access)
04: Request to get one specific
identification object (individual
access)
Object ID Name
00h Vendor Name
01h Product Code
02h Major/Minor Revision
03h Vendor URL
04h Product Name