Function Codes; Exception Codes - ABB ACS350 User Manual

Function codes

Supported function codes for the holding 4xxxx register are:
Code
Function name
Hex (dec)
03 (03) Read 4X Register
06 (06) Preset single 4X
register
10 (16) Preset multiple 4X
registers
17 (23) Read/Write 4X
registers
Note: In the modbus data message, register 4xxxx is addressed as xxxx -1. For
example register 40002 is addressed as 0001.

Exception codes

Exception codes are serial communication responses from the drive. The drive
supports the standard Modbus exception codes listed in the following table.
Code
01 Illegal Function
02 Illegal Data Address
03 Illegal Data Value
Drive parameter
Reads the binary contents of registers (4X references) in a slave
device.
Presets a value into a single register (4X reference). When
broadcast, the function presets the same register reference in all
attached slaves.
Presets values into a sequence of registers (4X references). When
broadcast, the function presets the same register references in all
attached slaves.
Performs a combination of one read operation and one write
operation (function codes 03 and 10) in a single modbus
transaction. Write operation is performed before the read
operation.
Name
Unsupported command
Address does not exist or is read/write protected.
Incorrect value for the drive:
• Value is outside minimum or maximum limits.
• Parameter is read-only.
• Message is too long.
• Parameter write is not allowed when start is active.
• Parameter write is not allowed when factory macro is selected.
5318 EFB PAR 18 holds the most recent exception code.
Additional information
Description
Fieldbus control with embedded fieldbus
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