Communication Specifications - Omron RX Series User Manual

8 Communications Functions
8-1

Communication Specifications

The 3G3RX-V1 Series has an RS485 communications capability that enables the inverter to
communicate with an external controller from its communications terminal block TM2 on the control
terminal block PCB.
Communications Specifications
Item
Transmission speed
Communications
method
Synchronous system
Transmission code
Transmission mode
Compatible interface
Data bit length
Parity
Stop bit length
Startup method
Wait time
Connection form
Error check
8 - 2
ASCII format
2,400/4,800/9,600/19,200 bps
Half-duplex communications
Start-stop synchronous system
ASCII code
Transmission starts with Least Significant Bit (LSB first)
RS485
7 or 8 bits
No/Even/Odd
1 or 2 bits
One-side start using host command
10 to 1,000 [ms]
1:N (N = 32 max.)
Overrun/Framing/BCC/
Vertical parity/Horizontal
parity
High-function General-purpose Inverter 3G3RX-V1 User's Manual (I578-E1)
Modbus format
Binary
8 bits
0 to 1,000 [ms]
Overrun/Framing/CRC-16/
Horizontal parity
Remarks
Selectable via Digital
Operator
Selectable via Digital
Operator
Selectable via Digital
Operator
Selectable via Digital
Operator
Selectable via Digital
Operator
Station No. selectable
via Digital Operator