ICPDAS ET-2268 CR User Manual page 140

ET-2200 Series Ethernet I/O Modules
Example: Function 01 (0x01), Readback DOs

Reads the Digital Output 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 01
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 01
Byte 02 01
Byte 03 03
[Request]
01 01 00 00 00 02
[Response]
01 01 01 03
(Message Number)
(Number of bytes remaining in this frame)
(Net ID)
(Function Code)
(Starting DO Address)
(Number of Points)
(Message Number)
(Number of bytes remaining in this frame)
(Net ID)
(Function Code)
(Byte Count of the Response)
(Value for DO0 to DO1)
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