9 Communications Functions
9 - 2
High-function General-purpose Inverter RX2 Series User’s Manual
9-1 Communication Specifications
The 3G3RX2 Series has an RS485 communications capability that enables the inverter to communi-
cate with an external controller from its RS485 communication terminal block on the control terminal
block PCB.
Communications Specifications
Item Modbus mode Remarks
Transmission speed 2,400/4,800/9,600/19,200/38,400/57,600/76,800/115,200 bps
Selectable via
Digital Operator
Communications
method
Half duplex communication method
Synchronous mode Non-synchronous mode
Transmission code Binary
Transmission method Transmission starts with Least Significant Bit (LSB first)
Applicable interface RS-485
Data bit length 8 bits
Parity No/Even/Odd
Selectable via
Digital Operator
Stop bit length 1/2 bits
Selectable via
Digital Operator
Start mode Half side start mode by host side command
Waiting time 0 to 1,000 [ms]
Selectable via
Digital Operator
Connection form 1:N (N=32)
Selectable via
Digital Operator
Error check Overrun/Framing/CRC-16/Horizontal parity
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