FR-A701 INSTRUCTION MANUAL (Applied) - Automation Systems ...

2WIRING2.3.6 RS-485 terminal block⋅⋅⋅⋅⋅Conforming standard: EIA-485(RS-485)Transmission format: Multidrop linkCommunication speed: MAX 38400bpsOverall length: 500mConnection cable:Twisted pair cable(4 paires)OPEN100ΩControl circuit specificationsTerminating resistor switchFactory-set to "OPEN".Set only the terminating resistor switch of theremotest inverter to the "100Ω" position.RDA1(RXD1+)(RXD1-) RDB1(RXD2+) RDA2(RXD2-)RDB2RXDTXDSDA1(TXD1+)(TXD1-)SDB1 SDA2(TXD2+) (TXD2-)SDB2P5S(VCC)SG(GND)P5S(VCC)SG(GND)VCC2.3.7 Communication operationUsing the PU connector or RS-485 terminal, 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 userprogram can run and monitor the inverter or read and write to parameters.For the Mitsubishi inverter protocol (computer link operation), communication can be performed with the PUconnector and RS-485 terminal.For the Modbus RTU protocol, communication can be performed with the RS-485 terminal.For further details, refer to page 297.29