Mitsubishi Electric FR-F820-00046 Instruction Manual page 241

NOTE
• When Pr.550 = "1" (NET mode RS-485 terminals) and Pr.551 ="1" (PU mode RS-485 terminals), the PU operation mode has
a precedence. For this reason, if the communication option is not mounted, switching to the Network operation mode is no
longer possible.
• Changed setting values are enabled at power-ON or inverter reset.
Pr.550 Pr.551
setting setting
1 ×
2 PU operation mode ×
0
3 ×
9999
PU operation mode
(initial
*3
value)
1 ×
2 PU operation mode ×
1
3 ×
9999
PU operation mode
(initial
*3
value)
1 ×
2 PU operation mode ×
9999
(initial
value)
3 ×
9999
PU operation mode
(initial
*3
value)
*1 The MODBUS RTU protocol cannot be used in the PU operation mode. To use the MODBUS RTU protocol, set Pr.551 = "2".
*2 If the communication option is not mounted, switching to the NET operation mode is not possible.
*3 When Pr.551 = "9999", the priority of the PU command source is USB connector > PU connector.
240
5. PARAMETERS
5.6 (D) Operation command and frequency command
Command source
PU connector USB connector
×
PU operation mode ×
PU operation mode
*3
×
PU operation mode
PU operation mode
*3
×
PU operation mode
PU operation mode
*3
Communication
RS-485 terminals
option
PU operation mode NET operation
*1 *2
mode
NET operation
×
*2
mode
NET operation
*2
mode
NET operation
×
*2
mode
PU operation mode
×
*1
NET operation
×
mode
NET operation
×
mode
NET operation
×
mode
PU operation mode NET operation
*1 *2
mode
NET operation
×
*2
mode
NET operation
×
mode
NET operation
×
*2
mode
NET operation
×
mode
NET operation
×
*2
mode
NET operation
×
mode
Remarks
Switching to NET operation mode
disabled
With communication option
Without communication option
With communication option
Without communication option
With communication option
Without communication option