Omron CJ1W-EIP21 Manual Do Utilizador

data and ERROR CLEAR codes, is also returned in the same order from low
to high bytes in the response block.

The identity object information (class ID = 01 hex) is read from the other com-
pany’s EtherNet/IP node at IP address 192.168.250.2, using the CIP UCMM
MESSAGE SEND command, 28 10. The command data is stored in the DM
Area starting at DM01000, and the response data is stored in the DM Area
starting at D02000. If the command ends with an error, the end code is stored
in D00006 and command transmission is retried.

[CMND

S

D

C ]

S = D01000: First command word

D01000 = 2810 hex

Command Code

D01001 = 0000 hex

Transport ID: 0000 hex

D01002 = 05DC hex

Message monitoring time: 15.00 s

D01003 = 5202 hex

Slave code: 52 hex (Unconnected Send)
Request path size: 2 words

D01004 = 2006 hex

Request path: 20 06 24 01 hex
(Connection Manager)
Class ID: 06 hex

D01005 = 2401 hex

Instance ID: 01 hex

Words S+6 to S+19 contain the request data.

D01006 = 0A0C hex

Priority/Time_Tick: 0A hex
Time Out Ticks: 0C hex

D01007 = 0600 hex

Message request size: 6 bytes

Words S+8 to S+10 contain the request message request.

D01008 = 0102 hex

Service: 01 hex (Get_Attribute_All)
Request path size: 2 words

Words S+9 and S+10 contain the request path.

D01009 = 2001 hex

8-bit class ID: 20 hex
Class ID: 01 hex

D01010 = 2401 hex

8-bit instance ID: 24 hex
Instance ID: 01 hex (Identity object)

Words S+11to S+19 contain the root path.

D01011 = 0800 hex

Route path size: 8 words

D01012 = 120D hex

Extended link address size = 1 hex
Route path size: 13 bytes (characters) = 0D hex

D01013 = 3139 hex

IP address: “19”

D01014 = 322E hex

IP address: “2.”

D01015 = 3136 hex

IP address: “16”

EtherNet/IP node of other manufacturer

EtherNet/IP Unit
with unit number 0

CMND(490) 
instruction

PLC's 
CPU 
Unit

Network address: 01 hex 
Node address: 05 hex
Unit address: 10 hex

Explicit 
message