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Parameter list
Parameter list
5
ADJUSTMENT
337
RS-485
communication
waiting time setting
1 9999
0 to 150ms,
9999
Set the waiting time between data transmission
to the inverter and response. (same
specifications as Pr.123)
338
Communication
operation command
source
10
0 Operation command source communication
1 Operation command source external
339
Communication
speed command
source
10
0 Speed command source communication
1
Speed command source external (Frequency
setting from communication is invalid, terminal 2
and 1 setting from external is valid)
2
Speed command source external (Frequency
setting from communication is valid, terminal 2
and 1 setting from external is invalid)
341
RS-485
communication CR/
LF selection
1 1 0, 1, 2
Select presence/absence of CR/LF. (same
specifications as Pr.124)
342
Communication
EEPROM write
selection
10
0
Parameter values written by communication are
written to the EEPROM and RAM.
1
Parameter values written by communication
are written to the RAM.
343
Communication error
count
1 0 (read only)
Displays the number of communication errors
during Modbus-RTU communication.
Read only.
Displayed only when Modbus-RTU protocol is
selected.
×××
502
Stop mode selection
at communication
error
10
At error
occurrence
Indication
Fault
output
At error
removal
0
Coasts to
stop
E.SER Output
Stops
(E.SER)
1
Decelerates
to stop
E.SER
after stop
Output
after stop
Stops
(E.SER)
2
Decelerates
to stop
E.SER
after stop
Without
output
Restarts
3
Continues
running at
Pr. 779
—
Without
output
Operates
normally
539
Modbus-RTU
communication check
time interval
0.1s 9999
0
Modbus-RTU communication can be made, but
the inverter trips in the NET operation mode.
0.1 to
999.8s
Set the interval of communication check time.
(same specifications as Pr. 122)
9999
No communication check (signal loss
detection) is made)
549
Protocol selection
10
0
Mitsubishi inverter
(computer link)
protocol
After setting change,
reset (switch power OFF,
then ON) the inverter.
The setting change is
reflected after a reset.
1 Modbus-RTU protocol
550
NET mode operation
command source
selection
1 9999
0 Communication option valid
1 Inverter RS-485 terminal valid
9999
Automatic recognition of the communication option
Normally, the RS-485 terminals are valid.
Communication option is valid when the
communication option is mounted.
551
PU mode operation
command source
selection
12
1
Select the RS-485 terminals as the PU
operation mode control source.
2
Select the PU connector as the PU operation
mode control source.
779
Operation frequency
during communication
error
0.01Hz 9999
0 to 400Hz
Motor runs at the specified frequency at a
communication error.
9999
Motor runs at the frequency used before the
communication error.
Parameter
Name
Incre-
ments
Initial
Value
Range Description
Parameter
copy
Parameter
clear
All parameter
clear
Related
parameters
: enabled
× : disabled