4-89
4-2 Function Mode
4
Functions
*1. There is no response for broadcasting.
*2. Specify the number of bytes to be changed, not the number of holding registers.
*3. Note that the holding register start address is "1013h", which is smaller by 1 than the register number "1014h".
Refer to "<Exception Response>" below if writing into the multiple holding registers cannot be
performed normally.
<Exception Response>
The master requires a response for a query except for broadcasting. Though the Inverter should
return a response corresponding with the query, it returns an exception response if the query has
an error.
The exception response has a field configuration shown in the following table.
The detailed field configuration is shown on the next page. The function code of the exception re-
sponse is the value of the query function code with 80h added. The exception code shows the cause
of exception response.
Query Response
No. Field name
Example
(HEX)
No. Field name
Example
(HEX)
1 Slave address
*1
08 1 Slave address 08
2 Function code 10 2 Function code 10
3 Start address (MSB)
*3
10 3 Start address (MSB) 10
4 Start address (LSB)
*3
13 4 Start address (LSB) 13
5
Number of holding
registers (MSB)
00 5
Number of holding
registers (MSB)
00
6
Number of holding
registers (LSB)
02 6
Number of holding
registers (LSB)
02
7 Number of bytes
*2
04 7 CRC-16 (MSB) B4
8 Change data 1 (MSB) 00 8 CRC-16 (LSB) 54
9 Change data 1 (LSB) 04
10 Change data 2 (MSB) 93
11 Change data 2 (LSB) E0
12 CRC-16 (MSB) 7D
13 CRC-16 (LSB) 53
Field Configuration
Slave address
Function code
Exception code
CRC-16
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