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Modbus Network Communication
Introduction
WJ200 Series inverters have built-in RS-485 serial communications, featuring the Modbus
RTU protocol. The inverters can connect directly to existing factory networks or work with
new networked applications, without any extra interface equipment. The specifications are
in the following table.
Item
Specifications
User-selectable
Transmission speed
2400 / 4800 / 9600 / 19.2k / 38.4k /
57.6k / 76.8k / 115.2k bps
Communication mode
Asynchronous
Character code
Binary
LSB placement
Transmits LSB first
Electrical interface
RS-485 differential transceiver
Data bits
8-bit (Modbus RTU mode)
Parity
None / even / odd
Stop bits
1 or 2 bits
Startup convention
One-way start from host device
Wait time for response 0 to 1000 msec.
Connections
Station address numbers from 1 to 32
Connector
Terminal connector
Error check
Overrun, Framing block check code,
CRC-16, or horizontal parity
Cable length
500m maximum
Connecting the Inverter to Modbus
Modbus connector is in control terminal block as below. Note that RJ45 connector (RS-422)
is used for external operator only.
Содержание WJ-0001S
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