Internal Error Code Registers - ABB FSCA-01 Manual

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Internal error code registers

A Modbus query can fail in many ways in the drive. The Modbus
standard does not specify detailed error descriptions. The
standard error codes are too generic. That is why the FSCA-01
RS-485 Adapter Module has an internal error register area.
The internal error register area is used if Modbus error code 0x04
occurs. The registers contain information about the last query. You
can figure out the reason of the failure by reading the registers.
The internal error register is cleared when a query has finished
successfully.
Diagnostics
Address
(4)00090
(4)00091
(4)00092
(4)00093
(4)00094
(4)00095
Error code Description
0x00 No error
0x02 Low or high limit
exceeded
0x03 Faulty subindex
0x05 Incorrect data type
0x65 General error in drive
communication
0x66 Timeout
0x70 Read-only
0x71 Parameter group
ended
0x72 MSB is not zero
0x73 LSB query start
0x74 MSB query end
Registers (16-bit word)
Reset internal error registers (0 = do nothing, 1 = reset)
Function code of the failed query
Internal error code, see the error No.
Failed register
Last register that was written successfully
Last register that was read successfully
Used when a modbus query was
successful.
Change access with a value outside the
value limits
Access to an unavailable subindex of an
array parameter
Change access with a value that does not
match the data type of the parameter
Undefined error when handling a Modbus
query
Timeout in drive communication when
handling a Modbus query
An attempt to write a non-zero value to a
read-only drive parameter
An attempt to write to multiple parameter
groups
An attempt to write a 16-bit parameter
with a 32-register address and the MSB
bytes are not zero
An attempt to access only the LSB
register of the 32-bit parameter
An attempt to access only the MSB
register of the 32-bit parameter
Situation