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B.10 GROUP FD COMMUNICATION PARAMETER DESCRIPTION
Fd-00
Baud rate
Default
5005
Setting Range
Units position (Modbus)
0: 300 bps
1: 600 bps
2: 1200 bps
3: 2400 bps
4: 4800 bps
5: 9600 bps
6: 19200 bps
7: 38400 bps
8: 57600 bps
9: 115200 bps
This parameter is used to set transmission speed between the host computer and AC drive.
Note that baud rate of host computer must be the same as that of AC drive. Otherwise,
communication will fail. The higher the baud rate is, the faster communication will be.
Fd-01
Data format
Default
0
Setting Range
0: No check <8,N,2>
1: Even parity check <8,E,1> 2: Odd parity check <8,O,1>
3: No check, data format <8,N,1>
Note that the data format of the host computer must be the same as that of the AC drive.
Otherwise, communication will fail.
Fd-02
Local address
Default
1
Setting Range
1 to 247
0: Broadcast address
When the local address is set to 0 (that is, broadcast address), the host computer
broadcast is enabled.
This address is unique (except broadcast address), which is the basis for point-to-point
communication between the host computer and AC drive.
Fd-03
Response delay
Default
2 ms
Setting Range
0 to 20 ms
This parameter sets the interval between the AC drive receiving data and the AC drive
sending data to the host computer. If response delay is shorter than system processing time,
system processing time will prevail. If response delay is longer than system processing
time, the system sends data to the host computer only after response delay is over.
Fd-04
Communication timeout
Default
0.0s
Setting Range
0.0s (invalid) 0.1s to 60.0s
When this parameter is set to 0.0s, the system does not detect communication timeout.
When the AC drive does not receive communication signal within the time set in this
parameter, it detects communication timeout fault (Err16). Generally, this parameter is set to
0.0s. In applications with continuous communication, you can use this parameter to monitor
communication status.
Fd-05
Communication Protocol Selection
Default
0
Setting Range
0: Non-standard Modbus protocol; 1: Standard Modbus protocol
When Fd-05 = 1, standard Modbus protocol is used. For details, refer to B.3
When Fd-05 = 0, an additional byte is returned by the slave computer during read.
For other read or write operations, the number of bytes returned is the same
in both standard and non-standard protocols.
Fd-06
Current resolution read by communication
Default
0
Setting Range
0: 0.01A
1: 0.1A
This parameter is used to set the unit of output current read by communication.
