Omron CJ1W-EIP21 - 10-2010 Operation Manual page 271

Sending Explicit Messages
9-1-1 Sending Explicit Messages Using CMND(490)
Command Format Example: Get_Attribute_All Service to Identity Object
28 10
Command
code
Unconnected Send service: 52 Hex
Request path size = 2 words: 02 Hex
01 02
Service code
Get_Attribute_All service
38 2E
.
8
With a CS/CJ-series EtherNet/IP Unit or built-in EtherNet/IP port, a
CMND(490) in the CPU Unit's ladder program can send CIP UCMM explicit
messages.
Send the CIP UCMM explicit message's command data in a FINS command
following the 2810 hex FINS command code.
The CIP UCMM explicit message's response is received following the
2810 hex FINS command code and the FINS completion code.
The following command is used: [ CMND
S: First command word
D: First response word
C: First control data word
Command data is set in order starting with the word specified for the
CMND(490) operand S (first command word) and continuing with words with
higher addresses in I/O memory in the command block format.
00 00 05 DC 52
Transport
ID
Service code
8-bit class ID: 20 Hex
Class ID Connection Manager: 06 Hex
Request path
20 01 24 01 08
Route path
(8 words)
Instance ID
8-bit instance ID: 24 Hex
Class ID identity object
8-bit class ID
Request path size (2 words)
Last hop data
Route path
32 35 30 2E 32
.
2 5 0 2
Padding data
Routing service data
Request path
02 20 06 24 01
8-bit instance ID: 24 Hex
Routing service data
Route path
00 12 0D 31 39
1
size
Route path size (13 bytes)
Ethernet port: 12 Hex
Routing service data
00
Section 9-1
S D
0A 0C 06 00
Message
request size
Time Out Ticks
Priority/Time Tick
Instance ID
32 2E 31 36
.
9 2 1 6
C ]
243