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129
Parameter List
Parameter List
4
DRIVING THE MOTOR
RS-485 communication
331
RS-485 communication
station number
10
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
196
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
11
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
10
0
Start command source communication
1
Start command source external
339
Communication speed
command source
10
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
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
10—
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
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
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
12
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
t
ion
Parameter
Name
Incre
ments
Initial
Value
Range Description
Related
parameters