Communication
‑704‑
4.1.5 Group Fd: Communication Parameters
Parameter Fd‑00 is used to set a data transmission rate between the host controller
and the AC drive. Note that the baud rate of the host controller must be consistent
with that of the AC drive. Otherwise, communication will fail. A high baud rate means
faster communication speed.
Para. No. Name
Default
Value Range
Fd‑00 Baud rate
5005
Ones (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
The data format of the host controller must be consistent with that of the AC drive.
Otherwise, communication will fail.
Para. No. Name
Default
Value Range
Fd‑01 Data format
0
0: No check <8,N,2>
1: Even parity check <8,E,1>
2: Odd parity check <8,O,1>
3: No check <8,N,1>
When the local address is set to 0 (broadcast address), the broadcasting function of
the host controller is implemented. The local address is unique (except the broadcast
address) and is the precondition to implementing point‑to‑point communication
between the host controller and the AC drive.
Para. No. Name
Default
Value Range
Fd‑02 Local address
1
1 to 247 0: Broadcast address
Response delay: Indicates the interval from the end of data receiving by the AC drive
to the start of data transmission to the host controller. If the response delay is shorter
than the system processing time, the former is subject to the latter. Otherwise, after
the system finishes data processing, the system waits until the response delay time
expires before sending the data to the host controller.
Para. No. Name
Default
Value Range
Fd‑03
Response delay
2 ms 0 ms to 20 ms
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