
Shenzhen Hpmont Technology Co., Ltd.
Appendix A MODBUS Communication Protocol
HD3Z Series User Manual V1.2
-77-
7.
Application Case
Please verify all the hardware equipments are connected well before controlling the controller via
communication. In addition, please preset the communication data format, baud rate and
communication address.
1. To read max. output frequency of address 2 (to read command frame F00.06), response frame =
50.00Hz.
Address
Code
Register address
Word no. of read
Checksum
Command frame
0x02
0x03
0x00
0x06
0x00
0x01
0x64
0x38
Address
Code
Answer byte
Register content
Checksum
Response frame
0x02
0x03
0x02
0x13
0x88
0xF1
0x12
2. To read the DC bus voltage of address 2 (group d00), corresponding answer frame = 537V.
Address
Code
Register address
Word no. of read
Checksum
Command frame
0x02
0x03
0x33
0x19
0x00
0x01
0x5A
0xBA
Address
Code
Answer byte
Register content
Checksum
Response frame
0x02
0x03
0x02
0x02
0x19
0x3C
0xEE
3. To write setting frequency of address 2 (F00.13 = 45.00Hz).
Address
Code
Register address
Register content
Checksum
Command /
Response frame
0x02
0x06
0x00
0x0D
0x11
0x94
0x15
0xC5
4. F00.10 = 2, write setting running frequency of address 2 = 45.00Hz, register content 0x11, 0x94.
Add.
Code
Register address
Register content
Checksum
Command /
Response frame
0x02
0x06
0x32
0x01
0x11
0x94
0xDB
0x7E
5. F00.11 = 2, address 2 is reverse.
Add.
Code
Register address
Register content
Checksum
Command /
Response frame
0x02
0x06
0x32
0x00
0x10
0x03
0xCA
0x80
6. F00.11 = 2, address 2 decelerates to stop.
Add.
Code
Register address
Register content
Checksum
Command /
Response frame
0x02
0x06
0x32
0x00
0x10
0x04
0x8B
0x42
7. F00.11 = 2, address 2 emergency stops.
Add.
Code
Register address
Register content
Checksum
Command /
Response frame
0x02
0x06
0x32
0x00
0x10
0x08
0x8B
0x47
A
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