HV580L Series Frequency Inverter
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Appendix A
：
Figure1 RS485 Installation way Appendix A
：
Figure 2 RS485 dimension
Terminal blocks Terminal Function
：
Type Sign
Terminal
Terminal
Function
485 communication
（
CN1
）
485+/485-
Communication port
Terminal
485 communication input terminal,
separate input
CGND
485 communication Power is separate
Jumper description
：
J3
Jumper position
End terminal resistor
3
2
1
Short-circuit 2, 3 pin Not use end terminal resister (default)
Short-circuit 1, 2 pin User end terminal resistor(white point is pin 1)
Cautions
：
1.
While using RS485 communication, if it’s the end inverter, then need to connect end resistor (Jumper J3);
2. To avoid outer interference to the communication signal, suggest use twisted-pare shielded cable on the
communication connection, avoid parallel cable.
AppendixB
：
HV580L Modbus communication
HV580L series inverter provides the RS485 communication interface, and support the Modbus RTU - from
standing communication protocol. Users can through the computer or PLC central control, through the
communication protocol Setting frequency converter running commands, modify or read function code
parameters, read the inverter working condition and fault information, etc.
1. Protocol content
The entire message frame must be used as a continuous stream. If the pause time frame prior to the
completion of more than 1.5 byte times, the receiving device will refresh the incomplete message and
assumes that the next byte will be the address field of a new message. Similarly, if a new message starts in
less than 3.5 bytes times following the previous message, the receiving device will consider it a continuation of
the previous message. This will set an error, as the value in the final CRC field will not be valid for the
combined messages. A typical message frame is shown below.
