Code
Parameter Name
Setting Range
Default
2: Odd Parity check, data format<8,O,1>
3: No check, data format <8,N,1>
The host computer and
variable frequency drive
setup data format must be consistent, otherwise,
communication is impossible.
Code
Parameter Name
Setting Range
Default
Fd-02
Broadcast address
0~247 (0: Broadcast address)
1
When the local address is set to 0, that is, broadcast address, it can realize the broadcast function of host computer.
Code
Parameter Name
Setting Range
Default
Fd-03
Modbus response time 0~20 ms
2 ms
Response delay time: it refers to the interval time from the inverter finishes receiving data to sending data to the
host machine. If the response time is less than the system processing time, then the response delay time is based on
the time delay of the system processing time. If the response delay time is more than the system processing time,
after the system processes the data, it should be delayed to wait until the response delay time is reached, then
sending data back to host machine.
Code
Parameter Name
Setting Range
Default
Fd-04
Communication
timeout
0.0s:invalid
0.1s~60.0s
0.0s
When the function is set to 0.0s, the communication interface timeout parameter is invalid.
When the function code is set to time value, if the interval time between the communication and the next
communication is beyond the communication timeout, the system will report communication failure error (Err16).
At normal circumstances, it will be set as invalid. If in the continuous communication system, set this parameter,
you can monitor the communication status.
Code
Parameter Name
Setting Range
Default
Fd-05
Modbus protocol data
transmission format
selection
Unit's digit: Modbus protocol.
0: Non-standard Modbus protocol
1: Standard Modbus protocol
1
Fd-05=1: Select standard Modbus protocol.
Fd-05=0: When reading the command, the slave machine return is one byte more than the standard Modbus
protocol’s, for details, refer to communication data structure of this protocol.
Code
Parameter Name
Setting Range
Default
Fd-06
Communication
reading current
resolution
0: 0.01A
1: 0.1A
0
It is used to confirm the unit of current value when the communication reads the output current.
