Mitsubishi Electric FR-F820-04750 Instruction Manual page 626

(N) Operation via communication and its settings
● Error code
If any error is found in the data received by the inverter, its error definition is sent back to the computer
together with the NAK code.
Error
Code
H0
H1
H2
H3
H4
H5
H6
H7
H8
H9
HA
HB
HC
HD
HE
HF
Tab. 5-231: Error codes
Response time
Fig. 5-234:
Formula for data transmission time
Communication speed
5 - 464
Error Item Error Description
The number of errors consecutively detected in
Computer NAK
communication request data from the computer is greater
error
than the permissible number of retries.
Parity error The parity check result does not match the specified parity.
The sum check code in the computer does not match that of
Sum check error
the data received by the inverter.
The data received by the inverter has a grammatical
Protocol error mistake. Or, data receive is not completed within the
predetermined time. CR or LF is not as set in the parameter.
Framing error The stop bit length differs from the initial setting.
New data has been sent by the computer before the inverter
Overrun error
completes receiving the preceding data.
⎯ ⎯
The character received is invalid (other than 0 to 9, A to F,
Character error
control code).
⎯ ⎯
⎯ ⎯
Parameter write was attempted in other than the computer
Mode error link operation mode, when operation command source is
not selected or during inverter operation.
Instruction code
The specified instruction code does not exist.
error
Invalid data has been specified for parameter writing,
Data range error
running frequency setting, etc.
⎯ ⎯
⎯ ⎯
⎯
Normal (no error)
Data sending time (refer to the following formula)
Inverter data processing time = Waiting time
Computer

Inverter
Inverter

Computer
Response time
1
Number of data
× characters
(Refer to page 5-459)
(bps)
+ Data check time
(setting x 10 ms) (Depends on the instruction code
(see tab. 5-233))
Time
10 ms or more necessary
Data sending time (refer to the following formula)
Communication specifications
× (Total number of bits) = data transmission time (s)
(Refer to the following.)
Parameters
Inverter Operation
Trips (E.PUE/E.SER) if error
occurs continuously more
than the permissible
number of retries.
⎯
Does not accept the
received data, but the
inverter does not trip.
⎯
⎯
Does not accept the
received data, but the
inverter does not trip.
⎯
⎯
⎯
I001327E