Mitsubishi Electric FR-A720-0.4K Instruction Manual page 325

(3) RS-485 terminal system configuration
Connection of a computer to the inverter (1:1 connection)
Computer
RS-485
interface/
terminals
Combination of computer and multiple inverters (1:n connection)
Computer
RS-485
interface terminals
Twisted pair cable
Computer
RS-232C
converter
Maximum
RS-232C
15m
cable
Converter
Twisted pair cable
Inverter
RS-485
terminals
*
Twisted pair cable
*Set the terminating resistor switch to the "100Ω" position.
Station 0 Station 1
Inverter Inverter
RS-485 RS-485
terminals terminals
* *
Station 0 Station 1
Inverter Inverter
RS-485 RS-485
terminals terminals
* *
Communication operation and setting
Computer
Inverter
RS-485
terminals
Maximum
RS-232C
15m
cable
Converter
Twisted pair cable
Station n
Inverter
RS-485
terminals
*
*Set only the terminating resistor switch of the
remotest inverter to the "100Ω" position.
Station n
Inverter
RS-485
terminals
*
*Set only the terminating resistor switch of the
remotest inverter to the "100Ω" position.
*
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