Sending Explicit Messages

Section 6-4

6-4-1 Sending Explicit Messages

The FINS command code 28 01 can be used to send explicit DeviceNet mes- sages to OMRON slaves and DeviceNet devices made by other manufactur- ers. The use of explicit messages is illustrated in the following diagram.

CPU Unit

Explicit FINS

message header

CMND (490)

Use 28 01 for the FINS command code.

FINS Response header

 

Slave or Master

DeviceNet De

by other

viceNet Unit

manufacturer

FINS

Explicit

header

message

 

DeviceNet

 

network

FINS

Response

header

 

The local DeviceNet Unit is specified as the destination in the communica- tions instruction in the PC’s user program (not the OMRON Special Slave or DeviceNet device made by another manufacturer), and the node address of the actual destination (i.e., the Slave or Master made by another manufac- turer) is specified in the command data for the explicit message send com- mand.

FINS command

CMND

 

Control data in C+3

 

Destination node address:

Local node address

Destination unit address:

Unit No. of DeviceNet Unit +10 ( Hex)

PC's

CPU Unit

Explicit message

Slave or Master not by OMRON

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Omron CS1W-DRM21, CJ1W-DRM21 operation manual Sending Explicit Messages