6-1
6-1 Communication Specifications
SYSDRIVE MX2 Series USER'S MANUAL (3G3MX2-Axxxx)
6
Communication Function
6-1 Communication Specifications
The 3G3MX2 Series Inverter comes standard with a RS-485 Modbus communication
(Modbus-RTU) port to enable communication with external network control equipment. The
communication specifications are specified below.
Function name Description Note
Protocol Modbus communication (Modbus-RTU) (Slave)
Transfer Speed 2400, 4800, 9600, 19.2 k, 38.4 k, 57.6 k, 76.8 k,
115.2 kbps
Selected/set by a
parameter.
Synchronous System Asynchronous system
Transfer Code Binary
Transmission Mode LSB first (Sent sequentially from the least significant
bit.)
Complying Interface RS-485
Data Bit Length 8 bits
Parity No parity/Even/Odd Selected/set by a
parameter.
Stop Bit Length 1 bit or 2 bits Selected/set by a
parameter.
Startup Method One-side start using host command −
Wait Time Silent interval + 0 to 1,000 [ms] Selected/set by a
parameter.
Connection 1: N (N = Max. 247)
(Up to 32 units can be connected without repeater.)
Selected/set by a
parameter.
Error Check Overrun/Framing/CRC-16/Horizontal parity
Communication length 500 m