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Sending Explicit Messages Section 6-4
The following diagram shows an example of actual node address specifica-
tions.
Note Depending on conditions, the destination slave may not always accept an
explicit message. Always perform retry processing when sending explicit mes-
sages.
FINS Command: EXPLICIT MESSAGE SEND (28 01)
EXPLICIT MESSAGE SEND will send an explicit DeviceNet message to the
specified class and receive a response.
Command Block
Response Block
Normal Response
Error Responses
The following response is returned if an error occurs for the explicit message.
The following response is returned if the explicit message cannot be sent or
times out.
PC's
CPU
Unit
Explicit message
Node 06
(Slave or Master not
by OMRON)
Destination node address:
Local node address: 05
Node 05
Destination unit address:
FE or 12 ( Hex)
The node address of the non-OMRON node is set as the
destination node address in the FINS command data.
Command code
Node address of the non-
OMRON node: 06 Hex
Explicit command block
Machine No. of DeviceNet Unit: 2
CMND
S
D
C
S
S+1
2
801
15 8 7 0
15 8 7 0
0
6
0
C+3
5FE
0128
Destination node address
Instance ID Service dataClass IDCommand
code
534 bytes max.
Service code
0128
Destination node address (remote node)
No. of bytes
received
Service dataResponse
code
Command
code
534 bytes max.
Service code
0128
Destination node address (remote node)
Service code 94 (Hex)
No. of bytes
received
Response
code
Command
code
Error code