Appendix A Introduction Of Communication - HNC Electric HV610 Series User Manual

Appendix A Introduction of Communication

HV610 provides standard RS485 communication interface and realizes communication link through MODBUS
communication protocol. Through PC / PLC and other upper computers, network control of " single / Multi-Agent "
can be realized ( setting frequency inverter control command and operating frequency, modifying functional
parameters, monitoring frequency inverter operating status and fault information ) to adapt to specific application
requirements.
2 Basic communication settings
2.1 Select communication protocol
MODBUS is only supported by default for standard products that choose communication protocols. If other
communication protocols are required, you need to purchase another communication card and set FD - 00 and
related parameters..
FD - 00 communication protocol
0: MODBUS protocol
2.2 Setting data transmission rate
Data transmission rate refers to the data transmission rate between the frequency inverter and the upper
computer.
FD - 01 communication baud rate
Protocol baud rate of MODBUS bits 0: 300 bps
1：600BPS
2：1200BPS
3：2400BPS
4：4800BPS
5：9600BPS
6：19200BPS
7：38400BPS
8：57600BPS
9：115200BPS
2.3 Set data format
FD - 02 data format
0: No check: data format < 8,N,2 > (1 - bit start bit, 8 - bit data bit, 2 - bit stop bit, no check)
1: Even check: data format < 8, E, 1 > ( 1 bit start bit, 8 bit data bit, 1 bit stop bit, even check )
2: Odd check: data format < 8, O, 1 > ( 1 bit start bit, 8 bit data bit, 1 bit stop bit, odd check )
3. No check: data format < 8, N, 1 > ( 1 - bit start bit, 8 - bit data bit, 1 - bit stop bit, no check )
Note: The data format of the frequency inverter and the master station must be the same, otherwise normal
communication will not be possible.
2.4 Set the local address
set the local address
FD - 03
In Modbus communication, a maximum of 247 units can be connected to the network. The address of each
frequency inverter must be unique.
2.5 communication timeout and response
FD - 05 communication timeout
When FD - 05 = 0.0, the communication timeout detection is invalid.
0～3【0】
0～0005【0005】
0～3【0】
0～247【1】
0.1～60.0s【0.0s】
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