Mitsubishi Electric FR-A720-0.4K Instruction Manual page 315

(3) Controllability through communcation
Condition
Operation
(Pr. 551
Location
Setting)
Item
Run command
(start, stop)
2
Running frequency
(PU
setting
connector)
Monitor
or 3 (USB
Parameter write
connector)
Parameter read
Inverter reset
Run command
(start, stop)
Running frequency
setting
Except for 2
Monitor
(3)
Parameter write
Parameter read
Inverter reset
Run command
(start, stop)
Running frequency
1
setting
(RS-485
Monitor
terminals)
Parameter write
Parameter read
Inverter reset
Run command
(start, stop)
Running frequency
setting
Except for 1
Monitor
Parameter write
Parameter read
Inverter reset
Run command
(start, stop)
Running frequency
setting

Monitor
Parameter write
Parameter read
Inverter reset
Inverter reset
Run command
(start, stop)

Frequency setting
*1 As set in Pr. 338 Communication operation command source and Pr. 339 Communication speed command source. (Refer to page 304)
*2 At occurrence of RS-485 communication error, the inverter cannot be reset from the computer.
*3 Enabled only when stopped by the PU. At a PU stop, PS is displayed on the operation panel. As set in Pr. 75 Reset selection/disconnected PU
detection/PU stop selection. (Refer to page 290)
*4 Some parameters may be write-disabled according to the Pr. 77 Parameter write selection setting and operating status. (Refer to page 292)
*5 Some parameters are write-enabled independently of the operation mode and command source presence/absence. When Pr. 77 = 2, write is
enabled. (Refer to page 71 for the parameter list)Parameter clear is disabled.
*6 When Pr. 550 NET mode operation command source selection = 1 (RS-485 terminals valid) or Pr. 550 NET mode operation command source selection =
9999 and the communication option is not fitted.
*7 When Pr. 550 NET mode operation command source selection = 0 (communication option valid) or Pr. 550 NET mode operation command source selection
= 9999 and the communication option is fitted.
Operation
Mode
PU External
Operation Operation
*3
×
×
*4 *5
*3 *3
× ×
× ×
*5 *5
×
×
×
*4 *5
× ×
× ×
× ×
*5 *5
× ×
× ×
× ×
× ×
*5 *5
× ×
×
×
Selection of operation mode and operation location
External/PU External/PU
Combined Combined
Operation Mode Operation
1 Mode 2
(Pr. 79 = 3) (Pr. 79 = 4)
*3
×
*4 *4
*3 *3
× ×
× ×
*5 *5
×
×
*4 *4
× ×
× ×
× ×
*5 *5
× ×
× ×
× ×
× ×
*5 *5
× ×
×
×
: Enabled, ×: Disabled,
NET Operation
NET Operation
(when RS-485
(when
communication
terminals are
option is used)
used)
*6
*3
×
×
*5
*3
×
×
*5
×
×
×
*5
×
*1
×
*1
×
*4 *5
×
*2
×
*1
×
*1
×
*5 *4
×
*2
×
*1
×
*1
: Some are enabled
305
*7
4