Rs485 Terminals - Mitsubishi Electric FR-F740 EC Instruction Manual

Communication operation and setting
6.18.2

RS485 terminals

Fig. 6-147: RS485 terminals layout
Tab. 6-56:
6 - 256
Name Description
RDA1 (RXD1+) Inverter receive+
RDB1 (RXD1−) Inverter receive−
RDA2 (RXD2+) Inverter receive+ (for connection of further stations)
RDB2 (RXD2−) Inverter receive− (for connection of further stations)
SDA1 (TXD1+) Inverter send+
SDB1 (TXD1−) Inverter send−
SDA2 (TXD2+) Inverter send+ (for connection of further stations)
SDB2 (TXD2−) Inverter send− (for connection of further stations)
PS5 (VCC) 5V power supply, permissible load current: 100mA
SG (GND) Earth (connected to terminal SD)
RS485 terminal description
Terminating resistor switch
Factory-set to "OPEN".
Set only the terminating resistor switch of the remotest
inverter to the "100Ω" position.
Parameter
I001033E