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156
Communication parameters
<Error Code List>
The corresponding error code in the following list is displayed if an error is detected in
any communication request data from the computer:
(5) Operation at alarm occurrence
*3: Can be selected using the corresponding parameter (factory-set to stop).
(6) Communication error
Error
Code
Item Definition
Inverter
Operation
H0
Computer
NAK error
The number of errors consecutively detected in
communication request data from the computer is
greater than allowed number of retries.
Brought to an
alarm stop (OPT)
if error occurs
continuously
more than the
allowable number
of retries.
H1 Parity error The parity check result does not match the specified parity
H2
Sum check
error
The sum check code in the computer does not match
that of the data received by the inverter.
H3
Protocol
error
Data received by the inverter is in wrong protocol, data
receive is not completed within given time, or CR and
LF are not as set in the parameter.
H4
Framing
error
The stop bit length is not as specified by initialization.
H5
Overrun
error
New data has been sent by the computer before the
inverter completes receiving the preceding data.
H6
H7
Character
error
The character received is invalid (other than 0 to 9, A to
F, control code).
Does not accept
received data but
is not brought to
alarm stop
H8
H9
HA Mode error
Parameter write was attempted in other than the computer
link operation mode or during inverter operation.
Does not accept
received data but
is not brought to
alarm stop.
HB
Instruction
code error
The specified command does not exist.
HC
Data range
error
Invalid data has been specified for parameter write,
frequency setting, etc.
HD
HE
HF
Fault Location Status
Operation Mode
Communication
Operation
(RS-485 connector)
External Operation
Inverter fault
Inverter operation Stop Stop
Communication
RS-485
connector
Continued Continued
Communication error
(Communication from
RS-485 connector)
Inverter operation Stop/continued (*3) Continued
Communication
RS-485
connector
Stop Stop
Fault Location
Error Message
(Operation panel)
Remarks
Communication error
(Communication from RS-485 connector)
OPT Error code is OPT