Communication Operation And Setting; Wiring And Configuration Of Pu Connector - Mitsubishi Electric FR-A740-00023 Instruction Manual

4.24 Communication operation and setting

Purpose
Communication operation from PU connector
Communication operation from RS-485
terminals
Restrictions on parameter write through
communication
Operation by PLC function
Communication using USB (FR-Configurator)

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
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.
Parameter that must be Set
Initial setting of computer link
communication (PU connector)
Initial setting of computer link
communication (RS-485 terminals)
Modbus-RTU communication
specifications
Communication EEPROM write
selection
PLC function
USB communication
Pin Number
1)
Inverter
(Receptacle side)
2)
Front view
3)
4)
8)
5)
to
6)
1)
7)
8)

Communication operation and setting

Pr. 117 to Pr. 124
Pr. 331 to Pr. 337,
Pr. 341
Pr. 331, Pr. 332,
Pr. 334, Pr. 343,
Pr. 549
Pr. 342
Pr. 414 to Pr. 417,
Pr. 498,
Pr. 506 to Pr. 515
Pr. 547, Pr. 548
Name Description
Earth (Ground)
SG
(connected to terminal 5)
⎯
Operation panel power supply
RDA Inverter receive+
SDB Inverter send-
SDA Inverter send+
RDB Inverter receive-
Earth (Ground)
SG
(connected to terminal 5)
⎯
Operation panel power supply
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