Function Code 16： ： ： ： Write Multiple Registers (4Xxxx); Function Code 108： ： ： ： Device Configuration; 2-9.1 Sub Function Code 07 : Read Range Code Of Ai/O Module - ICP DAS USA LinPAC-8000 User Manual

Modbus RTU／TCP Server User Manual for LinPAC / LinCon
2-8. Function Code 16： ： ： ： Write Multiple Registers (4xxxx)
This function code is used to set a sequence of AOs for I-8024 and I-87024 modules.
Request PDU
Byte 0
Devic ID
ID
[*] Data Count = AO Count * 2
[**] AO value is presented in a WORD signature = 2 Bytes.
Response PDU
Byte 0
Device Net ID
ID
2-9. Function Code 108： ： ： ： Device Configuration
This function code is definded by ICPDAS.

2-9.1 Sub Function Code 07 : Read range code of AI/O module

Request PDU
Devic Net ID
Response PDU
Byte 0
Devic ID
[*] Analog I/O modules defined various range code (type code) for different
purposes. More detail definition, please refer to following website :
Ver : 1.0 (2009.04)
Byte1 Byte 2
FC Address Hi
0x10 Slot Index
Byte 1
Function code
0x10
Byte 0 Byte1
Function Code
ID 0x6C
Byte1
Func. Code
ID 0x6C
Byte 3 Byte 4
Address Lo AO count Hi
AI Address Contiguous AOs for query
Byte 2 Byte 3
Address Hi Address Lo
Slot Index (1~8) AO Address
Byte 2
Sub Function Code
0x07
Byte 2 Byte 3
Sub Func. Code Address Hi
0x07 Slot Index
13
Byte 5 Byte 6
AO count Lo
Data Count
[*]
Byte 4
AO Count
Contiguous
Hi
Byte 3
Address Hi Address Lo
Slot Index (1~8) I/O Address
Byte 4
Address Lo Range code
I/O Address
Byte 7~
AO value
[**]
Byte 5
Lo
Byte 4
Byte 5
[*]
L2