Fuji Electric FRENIC-AQUA series User Manual page 48

How to set a query
- When the station address 0 is selected, broadcast is available. In this case, all inverters do
not respond even if a broadcast request is executed.
- 'FC' = 16 (10 )
H
- The function code is two bytes long. The Hi byte indicates the function code group (see
Table 3.2), and the Lo byte represents a function code identification number (0 to 99).
- The number of write data is two bytes long, and the setting range is from 1 to 50. If 51 or a
higher value is set, error response will result.
- The byte count field is one byte long, and the setting range is from 2 to 100. Set a value
equivalent to the double of the number of write data.
- Set the lowest order code (the data on the function code requested by the query) at the first
two bytes of the write data, and the higher order data (address plus 1, address plus 2 ...) at
the following bytes.
- If the write data contains an unused function code, the writing will be ignored, which will not
result in an error.
Interpretation of normal response
- With regard to the function code and the number of write data, the same values as those of
the query will be sent back.
[ 4 ] Diagnostics
Query
1 byte 1 byte
Station Sub function code
08
H
address
Hi
Normal response
1 byte 1 byte
Station Sub function code
08
H
address
How to set a query
- This request cannot use broadcast. Station address 0 will become invalid (no response).
- 'FC' = 8 (08 )
H
- Set the sub function code field to be 2 bytes long fixed 0000
data other than 0000
H
- The write data field is two bytes long, and any contents of data can be set.
Interpretation of normal response
- The frame is the same as the query.
2 bytes 2 bytes
Write data
0000
H
Lo Hi Lo
2 bytes 2 bytes
Write data
0000
H
is set.
3-7
3.1 Messages
2 bytes
Error check
2 bytes
Error check
. Error response will result if
H