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Receiving Explicit Messages Section 6-5
CPU Information Read (Service Code: 0E Hex)
Reads CPU Unit information, including operating mode, fatal/non-fatal errors,
and the CPU Unit model.
Command Block
Response Block
Parameters Destination node address (command): The node address of the CS/CJ-
series DeviceNet Unit from which to read the data, specified in 1-byte (2 digit)
hexadecimal.
Service code (command, response): 0E Hex is specified for commands.
For responses, the highest bit be ON and 8E Hex will be returned.
Class ID (command): Always 002F Hex.
Instance ID (command): Always 0000 Hex.
Attribute ID (command): The read information is specified by the attribute ID.
The attribute IDs are listed in the following table.
• CPU Operating Mode (when Attribute ID = 64 Hex)
Reads the CPU Unit operating mode.
• CPU Unit Errors (when Attribute ID = 65 Hex)
Reads if there are any fatal or non-fatal errors in the CPU Unit.
• CPU Unit Model (when Attribute ID = 66 Hex)
Reads the CPU Unit model.
No. of bytes received (response): The number of bytes received from the
destination node address (remote node) onwards is returned in hexadecimal.
Destination node address (response): The node address of the CS/CJ-
series DeviceNet Unit that returned the response is returned in hexadecimal.
Destination
node address
Service code
Class ID
Instance ID
Attribute ID
No. of bytes
received
Destination
node address
Service Code
Attribute Value
Attribute ID (Hex) Contents Attribute value size
64 CPU Unit operating mode 1 word (2 bytes)
65 CPU Unit errors 1 word (2 bytes)
66 CPU Unit model 22 bytes