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Справочник Пользователя для Mitsubishi Electronics FR-A700

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Communication operation and setting
4.24 Communication operation and setting
4.24.1 Wiring and configuration of PU connector
Using the PU connector, you can perform communication operation from a personal computer etc.
When the PU connector is connected with a personal, FA or other computer by a communication cable, a user program
can run and monitor the inverter or read and write to parameters.
(1) PU connector pin-outs
Purpose
Parameter that must be Set
Refer to 
Page
Communication operation from PU connector
Initial setting of computer link 
communication (PU connector)
Pr. 117 to Pr. 124
Communication operation from RS-485 
terminals
Initial setting of computer link 
communication (RS-485 terminals)
Pr. 331 to Pr. 337, 
Pr. 341
Modbus-RTU communication 
specifications
Pr. 331, Pr. 332, 
Pr. 334, Pr. 343, 
Pr. 549
Restrictions on parameter write through 
communication
Communication EEPROM write 
selection
Pr. 342
Communication using USB (FR Configurator)
USB communication
Pr. 547, Pr. 548
Pin Number
Name
Description
1)
SG
Earth (Ground) 
(connected to terminal 5)
2)
⎯
Operation panel power supply
3)
RDA
Inverter receive+
4)
SDB
Inverter send-
5)
SDA
Inverter send+
6)
RDB
Inverter receive-
7)
SG
Earth (Ground)
(connected to terminal 5)
8)
⎯
Operation panel power supply
CAUTION
⋅ Pins No. 2 and 8 provide power to the operation panel or parameter unit. Do not use these pins for RS-485 communication.
⋅ Do not connect the PU connector to the computer's LAN board, FAX modem socket or telephone modular connector. The
product could be damaged due to differences in electrical specifications.
8)
to
1)
Inverter
(Receptacle side)
Front view