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128
No. Item
Instruction
Code
Description
Number
of Data
Digits
Read H7F
11
Link
parameter
expansion
setting
Write HFF
H00 to H6C and H80 to HEC parameter values
are changed.
H00: Pr. 0 to Pr. 99 are accessible.
H01: Communication parameter n13
(
Pr. 145
)
and
calibration parameters C1 to C7
(
Pr. 900 to
Pr. 905) are accessible.
H03: Communication parameters n1 to n12
(Pr. 331 to Pr. 342) are accessible.
H09: Communication parameters n14 to n17
(Pr. 990 to Pr. 993) are accessible.
2 digits
Read H6C
12
Second
parameter
changing
(Code
HFF = 1)
Write HEC
When setting the bias/gain (data codes H5E to
H61, HDE to HE1) parameters
H00: Frequency (*1)
H01: Analog
H02: Analog value of terminal (*2)
*1. The gain frequencies may also be written using
Pr. 38 and Pr. 39 (data codes A6 and A7).
*2. When a voltage is given to the external
terminal to make bias or gain calibration, the
data value written is 4 digits.
2 digits
REMARKS
For the instruction codes HFF, HEC, their set values are held once they are written,
but changed to 0 when the inverter is reset or all clear is performed.
<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:
Error
Code
Item Definition
Inverter
Operation
H0
Computer
NAK error
The number of errors consecutively detected in
communication request data from the computer is
greater than allowed number of retries.
H1 Parit
y
error The parit
y
check result does not match the specified parit
y
.
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 wrong protocol, data
receive is not completed within given time, or CR and
LF are not as set in the parameter.
H4
Framing
error
The stop bit length is not as specified by initialization.
H5
Overrun
error
New data has been sent by the computer before the
inverter completes receiving the preceding data.
Brought to an
alarm stop
(OPT) if error
occurs
continuously
more than the
allowable
number of
retries.
H6 ——— ——— ———
H7
Character
error
The character received is invalid (other than 0 to 9, A to
F, control code).
Does not accept
received 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.
HB
Instruction
code error
The specified command does not exist.
HC
Data range
error
Invalid data has been specified for parameter write,
frequency setting, etc.
Does not accept
received data
but is not
brought to alarm
stop.
HD ——— ——— ———
HE ——— ——— ———
HF ——— ——— ———