Mitsubishi FR-D720-5.5K - Page 94

85
DRIVE THE MOTOR
3
Parameter list
Parameter List
PU connector communication
117
PU
communication
station number
10
0 to 31
(0 to 247)
Inverter station number.
Set the inverter station numbers when two
or more inverters are connected to one
personal computer.
When "1" (Modbus-RTU protocol) is set in
Pr. 549, the setting range within
parenthesis is applied.
∗ ∗
118
PU
communication
speed
1192
48, 96,
192, 384
Communication speed.
The setting value X 100 equals the
communication speed.
(For example, 19200bps when the setting
value is 192)
∗ ∗
119
PU
communication
stop bit length
11
0 Stop bit length: 1 bit Data length: 8bit
∗ ∗
1 Stop bit length: 2 bit Data length: 8bit
10 Stop bit length: 1 bit Data length: 7bit
11 Stop bit length: 2 bit Data length: 7bit
120
PU
communication
parity check
12
0
Without parity check
(for Modbus-RTU: stop bit length: 2bit)
∗ ∗1
With odd parity check
(for Modbus-RTU: stop bit length: 1bit)
2
With even parity check
(for Modbus-RTU: stop bit length: 1bit)
121
Number of PU
communication
retries
11
0 to 10
Number of retries at data receive error
occurrence
If the number of consecutive errors
exceeds the permissible value, the inverter
trips.
∗ ∗
9999
If a communication error occurs, the
inverter will not come to trip.
122
PU
communication
check time
interval
0.1s 0
0
RS-485 communication can be made.
Note that a communication error (E.PUE)
occurs as soon as the inverter is switched
to the operation mode with command
source.
∗ ∗
0.1 to
999.8s
Communication check (signal loss
detection) time interval
If a no-communication state persists for
longer than the permissible time, the
inverter trips (depends on Pr. 502).
9999
No communication check (signal loss
detection)
123
PU communication
waiting time setting
19999
0 to 150ms
Waiting time between data transmission to
the inverter and response.
∗ ∗
9999 Set with communication data.
124
PU communication
CR/LF selection
11
0 Without CR/LF
∗ ∗1With CR
2 With CR/LF
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. (Reading only)
Displayed only when Modbus-RTU
protocol is selected.
×××
502
Stop mode
selection at
communication
error
10
0 Coasts to stop
Select the inverter
operation if a
communication
error occurs.

1
, 2 Decelerates to stop
549
Protocol selection
10
0
Mitsubishi inverter
(computer link
operation) protocol
After setting
change, reset is
required (switch
power OFF, then
ON). The setting
change is reflected
after a reset.
∗ ∗
1
Modbus-RTU
protocol
Function
Parameter
Name
Incre-
ments
Initial
Value
Range Description
Parameter
Copy
Parameter
Clear
All Parameter
Clear
Related
Parameter