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137
Communication functions (Pr. 117 to Pr. 124, Pr. 342)
PARAMETERS
3
<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.
13
Second
parameter
changing
(Code
FF=1)
Read
H6C
When reading/setting the bias/gain (Instruction code H5E to H61, HDE to
HE1) parameters
H00: Speed/torque
H01: Analog
H02: Analog value of terminal (When written, the data value is any 4-digit
value.)
2 digits
Write
HEC
REMARKS
For the instruction codes HFF, HEC and HF3, their values are held once written but cleared to zero when an inverter reset or
all clear is performed.
Error Code Error Item Error Definition Inverter Side Operation
H0 Computer NAK error
The number of errors consecutively detected in
communication request data from the computer is
greater than the allowed number of retry times.
Brought to an alarm stop
(E. PUE) if error occurs
continuously more than the
allowable number of retry
times.
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 the wrong
protocol, data receive is not completed within the
given time, or CR and LF are not as set in the
parameter.
H4 Framing error The stop bit length differs from the initial setting.
H5 Overrun
New data has been set 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 receive
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 or receive
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,
running frequency write, etc.
HD — — —
HE — — —
HF — — —
No. Item
Instruction
Code
Description
Number
of Data
Digits