Hitachi SJ700D-004L, Instruction Manual

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Chapter 4 Explanation of Functions
4-138
(viii) Writes/Read data to multiple registers [17h]
This function writes/reads data to multiple registers.
(Example)
When setting "50.00 Hz" as the output frequency setting (F001) and reading the output frequency monitor (d001) in
the inverter at slave address "1":
*1) Note that the starting register address is 1 less than the actual address of the register to which the data is to be written first.
If the function to write/read data to multiple registers cannot be executed normally, the inverter will return an
exception response. For details, see Item (ix), "Exception response."
Query
Field name
Sample setting
(hexadecimal)
1 Slave address 01
2 Function code 17
3 Starting read register address (upper digit) (*1) 10
4 Starting read register address (lower digit) (*1) 00
5 Number of read registers (upper digit) 00
6 Number of read registers (lower digit) 02
7 Starting write register address (upper digit) (*1) 00
8 Starting write register address (lower digit) (*1) 00
9 Number of write registers (upper digit) 00
10 Number of write registers (lower digit) 02
11 Number of write data bytes 04
12 Updating data 1 (upper digit) 00
13 Updating data 1 (lower digit) 00
14 Updating data 2(upper digit) 13
15 Updating data 2(lower digit) 88
16 CRC-16 code (upper digit) F4
17 CRC-16 code (lower digit) 86
Response
Field name
Sample setting
(hexadecimal)
1 Slave address 01
2 Function code 17
3 Number of read data bytes 04
4 Starting read register address (upper digit) 00
5 Starting read register address (lower digit) 00
6 Number of read registers (upper digit) 13
7 Number of read registers (lower digit) 88
8 CRC-16 code (upper digit) E4
9 CRC-16 code (lower digit) 71
(register address) = (register number) - 1
(register address) = (register number) - 1
0000 1388h -> 5000d -> 50.00Hz
0000 1388h -> 5000d -> 50.00Hz