Omron SYSMAC CS1W-SCB41-V1 Operation Manual page 313

Auxiliary Area and CIO Area Allocations (Modbus-RTU Slave Mode)
Response
Reading 19 Bits from
CIO 0001.04 to
CIO 0002.06
15 14 13
CIO 0 15 14 13
CIO 1 31 30 29
1 0
CIO 2 47 46 45
CIO 3 63 62 61
Read Discrete Inputs
Function
Command
Response
Reading 19 Bits from
CIO 0001.04 to
CIO 0002.06
284
Function Code
Byte Count
Coil Status
Request
Function Code
Starting Address (H)
Starting Address (L)
Quantity of Coils (H)
Quantity of Coils (L)
Note Unused bits are filled with zeros.
12 11 10 9
12 11 10 9
28 27 26 25
1 1 1 1
44 43 42 41
60 59 58 57
Note The subscript numbers in the shaded boxes indicate the ON/OFF (1/0) status
of the bits that are read.
Reads multiple bits from the CIO Area of I/O memory.
Function Code
Starting Address
Quantity of Coils
Function Code
Byte Count
Coil Status
Request
Function Code
Starting Address (H)
Starting Address (L)
Quantity of Coils (H)
Quantity of Coils (L)
Note Unused bits are filled with zeros.
Length
1 byte
1 byte
n byte
Data
01 hex Function Code
00 hex Byte Count
14 hex Coil Status 27 to 20
00 hex Coil Status 35 to 28
13 hex Coil Status 38 to 36
8 7 6 5
8 7 6 5
24 23 22 21
0 0 1 1
40 39 38 37
1
56 55 54 53
Length
1 byte
2 bytes
2 bytes
Length
1 byte
1 byte
n byte
Data
02 hex Function Code
00 hex Byte Count
14 hex Coil Status 27 to 20
00 hex Coil Status 35 to 28
13 hex Coil Status 38 to 36
Section 9-3
Data
01 hex
N
n = N or N+1
Response
01 hex
03 hex
CD hex
6B hex
05 hex
4 3 2 1
4 3 2 1
20 19 18 17
0 1
36 35 34 33
0 1 0 1
52 51 50 49
Data
02 hex
0000 to 13FF hex
1 to 3E8 hex (1 to 1000)
Data
02 hex
N (See note.)
n = N or N+1
Response
02 hex
03 hex
CD hex
6B hex
05 hex
Data
0
0
16
32
1 0
48
Data