222 Description Of Communication Protocol
V260 Series High Performance Closed-Loop Vector Inverter User manual
11.1.8 EXAMPLES
1) Start 1# Frequency inverter Operation
Host request:
Slave Unit
Address
Function
Code
Coil Starting
Address
High Digit
Coil Starting
Address
Low Digit
Write
Values
High Digit
Write
Values
Low Digit
CRC Check
Low Digit
CRC Check
High Digit
01
05
10
04
FF
00
C9
3B
Slave Unit Response: Frequency inverter will operate in positive direction, and return the identical data as
requested by the host.
2) Set the operation frequency as 25.00Hz for frequency inverter, and correspondingly, it is 50.00% of the
upper limit frequency 50.00 Hz.
Host request:
Slave Unit
Address
Function
Code
Register
Starting
Address
High Digit
Register
Starting
Address
Low Digit
Register
Data High
Digit
Register
Data Low
Digit
CRC Check
Low Digit
CRC Check
High Digit
01 06 13 01 13 88 D1 D8
Slave Unit Response: Set the value for frequency inverter’s frequency as 25.00Hz, and return the identical
data as requested by the host.
3) Return the frequency inverter’s current operational frequency and rotation speed, the positive rotating
frequency of frequency inverter is 50.00Hz, and positive rotation speed of the electrical motor is 1500rpm.
Host request:
Slave Unit
Address
Function
Code
Register
Starting
Address High
Digit
Register
Starting
Address
Low Digit
Number of
Registers
High Digit
Number of
Registers
Low Digit
CRC Check
Low Digit
CRC Check
High Digit
01 03 D0 00 00 02 FC CB
Slave Unit Response:
Slave Unit
Address
Function
Code
Number
of bytes
read
The 1st
register
data high
digit
The 1st
register
data low
digit
The 2nd
register
data high
digit
The 2nd
register
data low
digit
CRC
Check
Low Digit
CRC
Check
High Digit
01 03
04
13 88 05
DC
7C 54
4) Query the number of bus communication failures (CRC error calculation), return the number of bus
communication failure as 35.
Host request:
Slave Unit
Address
Function
Code
Sub-function
Code
High Digit
Sub-function
Code
Low Digit
Query data
High Digit
Query data
Low Digit
CRC Check
Low Digit
CRC Check
High Digit
01 08 00
0C 00 00 20 08
