LS SV-iS7 Series - Function Code Descriptions

iS7 Ethernet Option Manual
16
① Read Holding Registers
The function used to read the data in the Inverter (Server).
Constitution of the frame requested from Client to Server;
Constitution of the frame sent from Server to Master in response;
② Read Input Registers
The function used to read the data in the Inverter (Server).
Constitution of the frame requested from Client to Server;
Requested Frame
Length
Value
Function code
1 Bytes
0x03
Comm. address
2 Bytes
0x0000 ~ 0xFFFF
The number of
data requested
2 Bytes
1~16
(LSIS Inverter standard)
Response Frame
Length
Value
Function code
1 Bytes
0x03
Comm. address
1 Bytes
2 x The requested
number of data
The number of
data requested
The requested
number of data x 2
Bytes
Value of the data of the
given number from the
communication address
Requested Frame
Length
Value
Function code
1 Bytes
0x04
Comm. address
2 Bytes
0x0000 ~ 0xFFFF
The number of
data requested
2 Bytes
1~16
(LSIS Inverter standard)