Omron NXEIP202 User Manual page 388

Appendices
Address
*1
Parameter
Message 0
sequence
number
Reserved 1 2
Data size 4
Reserved 2 6
Service code 7
Class ID 8
Instance ID 10
12
*2
Attribute ID
Data
14
*1. Parameters in the command are in little endian order.
*2. This parameter exists only when the command service requires specification of an attribute ID.
*3. If there is no attribute ID, the address offset is 12.
*4. If there is no attribute ID, the maximum size is 492 bytes.
 Response Format
When a response is returned from the destination device on the network, the EtherNet/IP Coupler
Unit sends the response (a TCP/IP message or UDP/IP message) to the device on Ethernet that
sent the command.
The response format is shown below.
The examples of values in the table are the parameter values in little endian when the Vendor ID
(instance attribute ID 01 hex) in the Identity object (class ID 01 hex) is read.
+0
+2
+4
+5
+6
+7
+8
A - 40
Size
offset (bytes)
2 Numbers are set to differentiate frames when there is more
than one send frame.
An arbitrary value is assigned by the device that sends the
message. The same value is stored in the corresponding
response.
Setting range: 0 to 65535
2 Always set to 0.
2 The data size from Reserved 2 to the end of the data is set.
The unit is bytes.
Setting range: 6 to 498
1 Always set to 0.
1 The service code for the destination object is set. The service
code that is set here is sent to the destination node as is.
2 The class ID of the destination object is set. The class ID that
is set here is sent to the destination node as is.
2 The instance ID of the destination object is set. The instance
ID that is set here is sent to the destination node as is.
2 Set the attribute ID of the destination object.
*3 *4 Set the data. The contents of the data depends on the ser-
490 max.
vice code.
Message sequence number
Data size
Reserved
Service code
General status
Size of additional status
Data
Description
2 bytes
2 bytes
1 byte
1 byte
1 byte
1 byte
496 bytes max.
NX-series EtherNet/IP Coupler Unit User's Manual (W536)
Exam-
ple
value
(hex)
0000
0000
0800
00
0E
0100
0100
0100
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