User`s manual

SH-300 Text Panel
Page 78 of 103
4. The list of corresponding relationship between address type of SH-300 and function
codes in Modbus RTU/ASCII Protocol
5. The list of corresponding relationship between address type of SH-300 and function
codes in Modbus RTU/ASCII EXTEND Protocol
Object type Address
type
Function
code
R/W Description
Indicator
0x
0x01
Read
Read coils ON/OFF status
1x
0x02
Read
Read discrete input
Function Key
0x
0x05
Write
Write coils ON/OFF status
Dynamic text
3x
0x04
Read
Read input register
4x
0x03
Read
Read holding register
Register
3x
0x04
Read
Read input register
4x
0x03
Read
Read holding register
0x06
Write
Write single holding register
0x10
Write
Write double holding register
Bar graph/
Trend graph
3x
0x04
Read
Read input register
4x
0x03
Read
Read holding register
Object type
Address
type
Function
code
R/W Description
Indicator
0x
0x01
Read
Read coils ON/OFF status
1x
0x02
Read
Read discrete input
3x_bit
0x04
Read
Read one bit of input register value
4x_bit
0x03
Read
Read one bit of holding register value
Function Key
0x
0x05
Write
Write coils ON/OFF status
4x_bit
0x06
Write
Write one bit of single holding register value
0x10
Write
Write one bit of double holding register
value value value
Dynamic text
3x
0x04
Read
Read input register
4x
0x03
Read
Read holding register
5x
6x
Register
3x
0x04
Read
Read input register
4x
0x03
Read
Read holding register
0x06
Write
Write single holding register
0x10
Write
Write double holding register
5x
0x03
Read
Read holding register
0x06
Write
Write single holding register
0x10
Write
Write double holding register
6x
0x03
Read
Read holding register
0x06
Write
Write single holding register
Bar graph/
Trend graph
3x
0x04
Read
Read input register
4x
0x03
Read
Read holding register
5x
6x