Adtech iMASTER – A1 Series User Manual page 166

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A1-User's Manual
External transmit frame
Modbus node ID
Modbus node ID
Command
Parameter
Data
CRC Hi
CRC Lo
VFD response frame
Modbus node
ID
Modbus node ID
Command
Parameter
Data
CRC Hi
CRC Lo
4) Parameter Setting & Trip information
Parameter Setting
1
byte: Group number
st
2
byte: Parameter number
nd
Ex) The case of '99.01' parameter reading or writing
1
byte: 0x63
st
2
byte: 0x01
nd
Data value is transmitted except decimal point.
Ex1) Frequency reference 60Hz (Parameter: 0x0004, Data: 0x1770)
Command
0x0006
Order
Parameter
Description
Target VFD
Modbus node ID
Frame type
Parameter
Data
-
-
Order
Parameter
Description
Target VFD
Modbus node ID
Frame type
Parameter
Data
-
-
Parameter
Communication Data
0x0004
6000(60.00Hz => 6000)
Data
CRC Hi
Data size
1 byte
1~32
0x06
1 byte
1
byte : Group
st
2 byte
2
byte : Index
nd
2 byte
Setting value
1 byte
Higher 8bit of 16bit CRC
1 byte
Lower 8bit of 16bit CRC
Data
CRC Hi
Data size
1 byte
1~32
1 byte
0x06
1
byte : Group
st
2 byte
2
byte : Index
nd
2 byte
Setting value is response
1 byte
Higher 8bit of 16bit CRC
1 byte
Lower 8bit of 16bit CRC
(Conversion hexa to decimal)
162
CRC Lo
Specifications
CRC Lo
Specifications
Data
1
byte : 0x17
st
2
byte : 0x70
nd

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