ABB ACS550-02 User Manual page 165

• Read-only values containing information on the operation of the drive.
• 16-bit words containing a sign bit and a 15-bit integer.
• When negative values, written as the two's complement of the corresponding
positive value.
• Scaled as defined for the selected parameter.
Exception Codes
Exception codes are serial communication responses from the drive. The ACS550
supports the standard Modbus exception codes defined below.
Exception
Code
01
ILLEGAL FUNCTION
02
ILLEGAL DATA ADDRESS
03
ILLEGAL DATA VALUE
Name
Unsupported Command
The data address received in the query is not allowable. It is not
a defined parameter/group.
A value contained in the query data field is not an allowable
value for the ACS550, because it is one of the following:
• Outside min. or max. limits.
• Parameter is read-only.
• Message is too long.
• Parameter write not allowed when start is active.
• Parameter write not allowed when factory macro is selected.
Meaning
163
Start-Up