(N) Operation via communication and its settings
Parameters
5 - 642
●
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.
●
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.
I002737E
Fig. 5-319:
Sum check code (examples)
Error
code
Error item
Error description
Inverter operation
H0
Computer NAK
error
The number of errors consecutively detected in
communication request data from the computer is greater
than the permissible number of retries.
Trips (E.PUE/E.SER) if error
occurs continuously more
than the permissible
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
The data received by the inverter has a grammatical
mistake. Or, data receive is not completed within the
predetermined time. CR or LF is not as set in the parameter.
H4
Framing error
The stop bit length differs from the initial setting.
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 the
received data, but the
inverter does not trip.
H8
⎯
⎯
⎯
H9
⎯
⎯
⎯
HA
Mode error
Parameter write was attempted in other than the computer
link operation mode, when operation command source is
not selected or during inverter operation.
Does not accept the
received data, but the
inverter does not trip.
HB
Instruction code
error
The specified instruction code does not exist.
HC
Data range error
Invalid data has been specified for parameter writing,
running frequency setting, etc.
Tab. 5-278:
Error codes (1)
ENQ
1
0
1
E
1
0
7
A
D
F
4
H05
H30 H31
H31
H45 H31
H30 H37 H41 H44 H46 H34
H30+H31+H45+H31+H31+H30+H37+H41+H44
= H1F4
STX
0
1
1
7
0
3
0
H02
H30 H31
H37
H31 H37
H30 H03 H33 H30
ETX
7
H30+H31+H31+H37+H37+H30
= H130
(Example 1)
Computer
Inverter
ASCII Code
Station
number
Station
number
Computer
Inverter
(Example 2)
ASCII Code
Instruction
code
Data read
Data
Sum
check
code
Sum
check
code
Sum
* 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.)
Binary code
Binary code
Sum
*W
a
itin
g
tim
e
Содержание FR-A820-00046 (0.4K)
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Страница 144: ...System configuration for Ethernet communication FR A800 E Installation and wiring 2 114 ...
Страница 202: ...Basic operation procedure JOG operation Basic operation 4 32 ...
Страница 1090: ...Check first when you have a trouble Protective functions 6 50 ...
Страница 1110: ...Measurement of main circuit voltages currents and powers Precautions for maintenance and inspection 7 20 ...
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