Omron SYSMAC CS1W-SCB41-V1 Operation Manual page 315

Auxiliary Area and CIO Area Allocations (Modbus-RTU Slave Mode)
Read Input Registers
Function
Command
Response
Reading 3 Words from
D1000 to D1002
15 14 13
D1000 A
D1001 5
D1002 9
Write Single Coil
Function
Command
286
Reads multiple words from the CIO, Work, Holding, or Auxiliary Area of I/O
memory.
Function Code
Starting Address
Quantity of Registers 2 bytes
Note The address depends on the area that is allocated.
Function Code
Byte Count
Register Value
Note N = Quantity of Registers
Request
Function Code
Starting Address (H)
Starting Address (L)
Quantity of Registers (H)
Quantity of Registers (L)
12 11 10 9
B
6
7
Writes a bit in I/O memory.
Function Code
Output Address
Output Value
Note The address depends on the area that is allocated.
Length
1 byte
2 bytes
Length
1 byte
1 byte
N × 2 bytes
Data
04 hex Function Code
03 hex Byte Count
E8 hex Register Value (H) DM1000
00 hex Register Value (L) DM1000
03 hex Register Value (H) DM1001
Register Value (L) DM1001
Register Value (H) DM1002
Register Value (L) DM1002
8 7 6 5
1
7
1
Length
1 byte
2 bytes
2 bytes
Section 9-3
Data
04 hex
0 to 17FF hex (See note.)
1 to 7D hex
Data
04 hex
N × 2 (See note.)
Response
Data
04 hex
06 hex
AB hex
12 hex
56 hex
78 hex
97 hex
13 hex
4 3 2 1
2
8
3
Data
05 hex
0 to FFFF hex (See note.)
0000 hex (OFF) or FF00 (ON)
0