I/O Memory Area (Cio) Read Multiple Registers - Omron CS1W-ETN21 Quick Start Manual

MANUEL STA46
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I/O memory area (CIO) Read Multiple Registers

[Function]
Reads registers in I/O memory area
[Request]
Function Code
Starting Address
Quantity of Registers
[Response]
Function Code
Byte Count
Register Value
(*)N=Quantity of Registers
Example: read 3 words (CIO 1000 to CIO 1002)
Request
Function Code
Starting Address(H)
Starting Address(L)
Quantity of Registers(H)
Quantity of Registers(L)
DM 15 14 13
1000 A
1001 5
1002 9
JP Viskovic 30/08/2005 OEE-F
Length
1 Byte
2 Bytes
2 Bytes
Length
1 Byte
1 Byte
N x 2 Bytes
Data
0x04 Function Code
0x03 Byte Count
0xE8 Register Value(H)CIO1000
0x00 Register Value(L)CIO1000
0x03 Register Value(H)CIO1001
Register Value(L)CIO1001
Register Value(H)CIO1002
Register Value(L)CIO1002
12 11 10 9
B
6
7
Data
0x04
0x0000-0x16A8
1-125(0x7D)
Data
0x04
N x 2(*)
Response
8 7 6 5
1
7
1
Modbus TCP
Data
0x04
0x06
0xAB
0x12
0x56
0x78
0x97
0x13
4 3 2 1
2
8
3
9
0