ICPDAS ET-2268 CR User Manual page 142

ET-2200 Series Ethernet I/O Modules
Example: Function 02 (0x02), ReadDIs

Reads the Digital Input value
[Leading 6 bytes]
Command: 01 02 00 00 00 06
[Leading 6 bytes]
Response: 01 02 00 00 00 04
 A description of the command and response is as follows:
Command:
Response:
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[Leading 6 bytes]
Bytes 00-03 01 02 00 00
Bytes 04-05 00 06
[Request]
Byte 00 01
Byte 01 02
Byte 02-03 00 00
Byte 04-05 00 02
[Leading 6 bytes]
Bytes 00-03 01 02 00 00
Bytes 04-05 00 04
[Response]
Byte 00 01
Byte 01 02
Byte 02 01
Byte 03 03
[Request]
01 02 00 00 00 02
[Response]
01 02 01 03
(Message Number)
(Number of bytes remaining in this frame)
(Net ID)
(Function Code)
(Starting DI Address)
(Number of Points)
(Message Number)
(Number of bytes remaining in this frame)
(Net ID)
(Function Code)
(Byte Count of the Response)
(Value for DI0 to DI1)
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