Mitsubishi Electric FR-F800 Series Instruction Manual page 512

• 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
 Response time
*1 Refer to
*2 Communication specifications
Name
Stop bit length
Data length
Parity check
In addition to the above, 1 start bit is necessary.
Minimum number of total bits: 9 bits
Maximum number of total bits: 12 bits
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Error item
The number of errors consecutively detected in
Computer NAK error communication request data from the computer is greater
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 mistake.
Or, data receive is not completed within the predetermined
Protocol error
time. The CR or LF code specification is not the same as the
setting of 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 when the inverter does not
perform computer link communication, when the operation
Mode error
commands are not given through communication, or during
inverter operation.
Instruction code error The specified instruction code does not exist.
Invalid data has been specified for parameter writing,
Data range error
frequency setting, etc.
— —
— —
Normal (no error) —
Data sending time (refer to the following formula)
Inverter data processing time
Computer
Inverter
Inverter
Computer
[Formula for data transmission time]
1
Number of data characters *1
Communication
speed (bps)
page 508.
Number of bits
1 bit
2 bits
7 bits
8 bits
With 1 bit
Without 0
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Error description
Waiting time
(setting 10 ms)
Time
10 ms or more necessary
Data sending time (refer to the following formula)
Communication specifications
(Total number of bits) *2
Inverter operation
The inverter output is shut off
(E.PUE/E.SER) if error occurs
continuously more than the
permissible number of retries.
The LF signal is output.
—
The inverter does not accept the
received data. However, the
inverter output is not shut off.
—
—
The inverter does not accept the
received data. However, the
inverter output is not shut off.
—
—
—
Data check time
(depends on the
instruction code*3)
data transmission time (s)
5. PARAMETERS
5.12 (N) Communication operation parameters
1
2
3
4
5
6
7
8
9
10
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