Multiple Holding Register Read Or Write [17H] - Omron 3G3MX2 User Manual

6-5 Explanation of Each Parameter No.

Multiple Holding Register Read or Write [17h]

Writes into or reads from consecutive multiple registers.
Example) Write 50,00 Hz into Output Frequency Setting (F001) of the Inverter with
Slave Address "1," and Read Output Frequency Monitor Value (d001).
Query:
No.
1
2
3
4
5
6
7
8
9
10
11
12
6
13
14
15
16
17
Response:
No.
1
2
3
4
5
6
7
8
9
*1. Note that the holding register start address is smaller by 1 than the register number. The register
number less 1 corresponds to the register address.
Refer to "Exceptional Response" on page 6-18 if writing into or reading from multiple registers
cannot be performed normally.
6-17
Field name
Slave address
Parameter No.
Read register start address (MSB)
Read register start address (LSB)
Number of read registers (MSB)
Number of read registers (LSB)
Write register start address (MSB)
Write register start address (LSB)
Number of write registers (MSB)
Number of write registers (LSB)
Number of written data bytes n
Written data 1 (MSB)
Written data 1 (LSB)
Written data 2 (MSB)
Written data 2 (LSB)
CRC-16 (MSB)
CRC-16 (LSB)
Field name
Slave address
Parameter No.
Number of read data bytes n
Read data 1 (MSB)
Read data 1 (LSB)
Read data 2 (MSB)
Read data 2 (LSB)
CRC-16 (MSB)
CRC-16 (LSB)
Example
(Hex)
01
17
*1
10
(Register address) = (Register number) − 1
*1
00
00
02
*1
00
(Register address) = (Register number) −1
*1
00
00
02
04
00
00
0000 1388h → 5000d → 50.00 Hz
13
88
F4
86
Example
(Hex)
01
17
04
00
00
0000 1388h → 5000d → 50.00 Hz
13
88
F4
71
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