Veikong VFD700 Series, Operation Manual

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Appendix
VFD700 AC Drive Getting Started Guide 83
4.01
×
100=401=1
×
256
+
144
+
1
Then
m=1, n=144
by the decimal to hexadecimal converting,
M= 01, N=90,
So, the register address=0190H,
Note: register addresses for all VFD700 parameters are in the Appendix3.

Function code Example 1 (03H)
The example is to read the contents in P04.01
～
P04.10 of VFD700 drive, details are as
the table below:
A-table1-2Code 03H example
Master Require
Drive
Node
Code
Start Register Address
NumberOf Register
Read
CRC Checking
MSB LSB MSB LSB LSB MSB
01H 03H 01H 90H 00H 0AH C4H 1CH
Slave (VFD700 drive) Response
Drive
Node
Code
Number
Of
Register
Read
Contents of P04.01
～
P04.10
Check Sum Of
CRC
P04.01
……
P04.10
LSB MSB
MSB LSB MSB LSB
01H 03H 14H 01H F4H
……
07H D0H B9H 76H

Function code Example 2 (06H)
The example is to write 8 into P03.27.
A-table 1-3 Function code 06H example
Master Require
Drive
Node
Code
Register Address Register Data Check Sum Of CRC
MSB LSB MSB LSB LSB MSB
01H 06H 01H 46H 00H 08H 68H 25H
Slave (VFD700 drive) Response
Drive
Node
Code
Register Address Register Data Check Sum Of CRC
MSB LSB MSB LSB LSB MSB
01H 06H 01H 46H 00H 08H 68H 25H