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Communication operation and setting
4
PARAMETERS
(2) PU connector communication system configuration
Connection of a computer to the inverter (1:1 connection)
Combination of computer and multiple inverters (1:n connection)
* 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: 100Ω)
REMARKS
Refer to the following when fabricating the cable on the user side.
Examples of products available on the market (as of February, 2008)
Product Type Maker
1) 10BASE-T cable SGLPEV-T 0.5mm × 4P ∗1 Mitsubishi Cable Industries, Ltd.
∗1 Do not use pins No. 2, 8 of the 10BASE-T cable. (Refer to page 180)
PU
connector
Inverter
Station 0
Computer
RS-485
interface/terminals
10BASE-T cable 1)
PU
connector
Inverter
FR-PU07
10BASE-T cable 1)
PU
connector
Inverter
Station 0
Computer
10BASE-T cable 1)
RS-232C
connector
RS-232C RS-485
converter
RS-232C
cable
Maximum
15m
RJ-45 connector
RJ-45
connector
RJ-45
connector
Computer
Terminating resistor *
RS-232C
Connector
RS-232C
cable
Maximum
15m
Inverter
Station 0
Computer
Terminating resistor *
PU
connector
PU
connector
PU
connector
PU
connector
PU
connector
PU
connector
10BASE-T cable 1)
Distributor
Distributor
Inverter
Station 1
Inverter
Station n
(max. 32 inverters)
Inverter
Station 1
Inverter
Station 2
Inverter
Station n
10BASE-T cable 1)
RS-485
interface/terminals
RS-232C RS-485
converter
RJ-45 connector
RJ-45 connector