Table of Contents
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Parameter
Name
RS-485 communication
331
station number
332
RS-485 communication speed
RS-485 communication stop bit
333
length
RS-485 communication parity
334
check selection
RS-485 communication retry
335
count
RS-485 communication
336
check time interval
RS-485 communication waiting
337
time setting
Communication operation command
338
source
Communication speed
339
command source
RS-485 communication CR/LF
341
selection
Communication EEPROM
342
write selection
343
Communication error count
Modbus-RTU
communication check time
539
interval
Protocol selection
549
NET mode operation
550
command source selection
PU mode operation
551
command source selection
340
Refer to Pr. 79.
—
Incre
Initial
Range
ments
Value
Set the inverter station number.
0 to 31
(same specifications as Pr. 117 ) When "1" (Modbus-RTU
1
0
(0 to 247)
protocol) is set in Pr. 551, the setting range within
parenthesis is applied.
3, 6, 12,
Used to select the communication speed. (same
1
96
24, 48, 96,
specifications as Pr. 118)
192, 384
Select stop bit length and data length. (same
1
1
0, 1, 10, 11
specifications as Pr. 119)
Select the parity check specifications. (same
1
2
0, 1, 2
specifications as Pr. 120)
0 to 10,
Set the permissible number of retries at occurrence of a
1
1
data receive error. (same specifications as Pr. 121)
9999
RS-485 communication can be made, but the inverter
0
trips in the NET operation mode.
0.1 to
Set the communication check time interval. (same
0.1s
0s
specifications as Pr. 122)
999.8s
No communication check
9999
(signal loss detection)
Set the waiting time between data transmission to the
0 to 150ms,
1
9999
inverter and response.
9999
(same specifications as Pr. 123)
0
Start command source communication
1
0
1
Start command source external
0
Frequency command source communication
1
Frequency command source external
1
0
Frequency command source external (Frequency
2
command from communication is valid, frequency
command from terminal 2 is invalid)
Select presence/absence of CR/LF. (same specifications
1
1
0, 1, 2
as Pr. 124)
Parameter values written by communication are written
0
to the EEPROM and RAM.
1
0
Parameter values written by communication are written
1
to the RAM.
Displays the number of communication errors during
Modbus-RTU communication.
1
0
—
Read only.
Displayed only when Modbus-RTU protocol is selected.
Modbus-RTU communication can be made, but the
0
inverter trips in the NET operation mode.
0.1s
9999
Set the communication check time interval. (same
0.1 to 999.8s
specifications as Pr. 122)
9999
No communication check (signal loss detection)
Mitsubishi inverter
0
(computer link) protocol
1
0
1
Modbus-RTU protocol
The communication option is the command source
0
when NET operation mode.
RS-485 terminals are the command source when
1
NET operation mode.
1
9999
Automatic communication option recognition
Normally, RS-485 terminals are the command
9999
source. When a communication option is mounted,
the communication option is the command source.
RS-485 terminals are the command source when PU
1
operation mode
PU connector is the command source when PU
1
2
2
operation mode.
Select the USB connector as the PU operation mode
3
control source.
Parameter List
Description
After setting change, reset
(switch power off, then on)
the inverter.
The setting change is
reflected after a reset.
129
4
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