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Sending Explicit Messages Section 6-4
When connecting networks, routing tables must be registered for the PC CPU
Units on all networks.
When connecting two or more communication units (including the DeviceNet
Unit) to a CS/CJ-series CPU Unit, the DeviceNet Unit must be registered in
the CS/CJ-series PC CPU Unit routing table (for the local network table only).
Commands cannot be executed if the DeviceNet Unit is not registered.
6-4 Sending Explicit Messages
CS/CJ-series DeviceNet Units can send explicit messages. FINS command
headers are attached to explicit messages and sent. Explicit messages can
be sent to the following destinations.
• Masters or slaves made by other manufacturers
• Other PCs with a CS/CJ-series DeviceNet Unit.
• PCs (Slaves) with C200H I/O Link Units (See note).
Note Only reading and writing I/O memory is possible for PCs with C200H
I/O Link Units. Status reading/writing is not possible.
Example
Up to 3 levels of networks, including DeviceNet, are possible.
Controller Link Unit
Controller Link Unit
CS/CJ-series DeviceNet Unit
CS/CJ-series CPU Unit
Remote I/O communications
Controller Link
DeviceNet
CS/CJ-series DeviceNet Unit
DeviceNet
CS/CJ-series
DeviceNet Unit
CS/CJ-series DeviceNet Unit
CS/CJ-series CPU Unit
Explicit messages can be sent
Explicit message
FINS header
DeviceNet
Other manufacturer master or slave
or
C200H I/O Link Unit
C200HX/HG/HE or
CS/CJ-series
CPU Unit (Slave)
Note: Only I/O memory
read/write possible
CS/CJ-series DeviceNet Unit