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(2)
PU connector communication system configuration
Connection of a computer to the inverter (1:1 connection)
FR-PU07
connector
RJ-45 connector 2)
Communication cable 1)
Combination of computer and multiple inverters (1:n connection)
Computer
RS-485
interface/terminals
Computer
RS-232C
Connector
RS-232C
cable
RS-232C
converter
* The inverters may be affected by reflection depending on the transmission speed or transmission distance. If this reflection hinders communication, provide a
terminating resistor. If the PU connector is used to make a connection, use a distributor since a terminating resistor cannot be fitted. Connect the terminating
resistor to only the inverter remotest from the computer. (Terminating resistor: 100)
REMARKS
Computer-inverter connection cable
Refer to page 344 for the connection cable (RS232CRS485 converter) between the computer with RS-232C interface and an
inverter.
Refer to page 344 to make your own cable.
Computer
Inverter
PU
RS-485
interface/terminals
Station 0
Inverter
PU
connector
Distributor
3)
Communication cable 1)
Station 1
Inverter
Maximum
PU
15m
connector
RS-485
Distributor
3)
Communication cable 1)
Communication operation and setting
Station 0
Computer
Inverter
RS-232C
connector
PU
RS-232C
connector
cable
RS-232C
converter
RJ-45
connector 2)
Communication cable 1)
Station n
Station 1
(max. 32 inverters)
Inverter
Inverter
PU
PU
connector
connector
RJ-45 connector 2)
Station 2
Station n
Inverter
Inverter
PU
PU
connector
connector
RJ-45 connector 2)
Station 0
Inverter
PU
Maximum
connector
15m
RS-485
RJ-45
connector 2)
Communication cable 1)
Terminating resistor *
Terminating resistor *
219
4
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