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Mitsubishi Electric FR-F740-00023 Instruction Manual: Communication Operation And Setting; Wiring And Configuration Of Pu Connector

F700 series.
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4.19 Communication operation and setting

Purpose
Communication operation from PU
connector
Communication operation from RS-
485 terminals
Restrictions on parameter write
through communication

4.19.1 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
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
Name
Description
SG
(connected to terminal 5)
Operation panel power supply
RDA
Inverter receive+
SDB
Inverter send-
SDA
Inverter send+
RDB
Inverter receive-
SG
(connected to terminal 5)
Operation panel power supply
Refer to
Page
194
207
195
Earth
Earth
189
4

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