Error Code - Mitsubishi Electric FR-A820-00046 Instruction Manual

(N) Operation via communication and its settings
● Sum check code
The sum check code is a 2-digit ASCII (hexadecimal) representing the lower 1 byte (8 bits) of the
sum (binary) derived from the checked ASCII data.
Fig. 5-319:
● 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
Tab. 5-278: Error codes (1)
5 - 642
(Example 1)
ENQ
Inverter
Computer
ASCII Code
H05
* When the Pr. 123 or Pr. 337 (Waiting time setting) ≠"9999", create the communication request
data without "waiting time" in the data format. (The number of characters decreases by 1.)
(Example 2)
STX
Inverter Computer
ASCII Code
H02
Sum check code (examples)
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.
Instruction
Station
code
number
0 1 E 1 1 0
H30 H31 H45 H31 H31 H30 H37 H41 H44 H46 H34
H30+H31+H45+H31+H31+H30+H37+H41+H44
= H1F4
Sum
Station
Data read
number
0 1 1 7 7 0
H30 H31 H31 H37 H37 H30 H03 H33 H30
H30+H31+H31+H37+H37+H30
= H130
Sum
Sum
check
Data
code
7 A D F 4 Binary code
Sum
ETX check
code
Binary code
3 0
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.
Parameters
I002737E