Inovance MD500

Appendix C
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151
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B.5 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 host computer and AC drive. Note that baud rate of
host computer must be the same as that of AC drive. Otherwise, communication shall fail. The higher 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 data format of host computer must be the same as that of AC drive. Otherwise, communication shall
fail.
Fd-02
Local address Default 1
Setting Range
1 to 247
0: Broadcast address
When local address is set to 0 (that is, broadcast address), host computer broadcast is enabled.
This address is unique (except broadcast address), which is basis for point-to-point communication between
host computer and AC drive.
Fd-03
Response delay Default 2 ms
Setting Range 0 to 20 ms
This parameter sets interval between AC drive completing receiving data and AC drive sending data to host
computer. If response delay is shorter than system processing time, system processing time shall prevail. If re-
sponse delay is longer than system processing time, system sends data to host computer only after response
delay is up.
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, system does not detect communication timeout.
When AC drive does not receive communication signal within time set in this parameter, it detects communica-
tion timeout fault (Err16). Generally, this parameter is set to 0.0s. In applications with continuous communica-
tion, 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 oper-
ations, 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 unit of output current read by communication.