129
RS
-4
8
5 c
ommu
ni
ca
tio
n
331
RS-485 communication
station number
1
0
0 to 31
(0 to 247)
Set the inverter station number.
(same specifications as
Pr. 117
) When "1" (Modbus-RTU
protocol) is set in
Pr. 551
, the setting range within
parenthesis is applied.
332
RS-485 communication speed
1
96
3, 6, 12,
24, 48, 96,
192, 384
Used to select the communication speed. (same
specifications as
Pr. 118
)
333
RS-485 communication stop bit
length
1
1
0, 1, 10, 11
Select stop bit length and data length. (same
specifications as
Pr. 119
)
334
RS-485 communication parity
check selection
1
2
0, 1, 2
Select the parity check specifications. (same
specifications as
Pr. 120
)
335
RS-485 communication retry
count
1
1
0 to 10,
9999
Set the permissible number of retries at occurrence of a
data receive error. (same specifications as
Pr. 121
)
336
RS-485 communication
check time interval
0.1s
0s
0
RS-485 communication can be made, but the inverter
trips in the NET operation mode.
0.1 to
999.8s
Set the communication check time interval. (same
specifications as
Pr. 122
)
9999
No communication check
(signal loss detection)
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
1
0
0
Start command source communication
1
Start command source external
339
Communication speed
command source
1
0
0
Frequency command source communication
1
Frequency command source external
2
Frequency command source external (Frequency
command from communication is valid, frequency
command from terminal 2 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
1
0
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
—
Displays the number of communication errors during
Modbus-RTU communication.
Read only.
Displayed only when Modbus-RTU protocol is selected.
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 communication check time interval. (same
specifications as
Pr. 122
)
9999
No communication check (signal loss detection)
549
Protocol selection
1
0
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
The communication option is the command source
when NET operation mode.
1
RS-485 terminals are the command source when
NET operation mode.
9999
Automatic communication option recognition
Normally, RS-485 terminals are the command
source. When a communication option is mounted,
the communication option is the command source.
551
PU mode operation
command source selection
1
2
1
RS-485 terminals are the command source when PU
operation mode
2
PU connector is the command source when PU
operation mode.
3
Select the USB connector as the PU operation mode
control source.
—
340
Refer to
Pr. 79
.
Func
tio
n
Parameter
Name
Incre
ments
Initial
Value
Range
Description
Re
la
te
d
p
ara
m
e
te
rs
