Examples Of Devicenet Explicit Messages - Omron CPM2C-S100C Operation Manual

Explicit Message Communications
ERROR RESPONSE
6-3-3

Examples of DeviceNet Explicit Messages

CS/CJ, CVM1, and CV-series PCs: Reading Data with CMND(194)
Example Network
Conditions
128
The CPM2C-S returns an error response when there is an error in the explicit
message command sent from the DeviceNet Master.
Response Format
Number of bytes received
Parameters
Number of bytes received (response)
Indicates the number of bytes of data (in hexadecimal) from the "source node
number."
Source node number (response)
Indicates the node number (in hexadecimal) of the CPM2C-S that returned
the response.
General error code (response)
Indicates the nature of the error with one of the 1-byte (2-digit hexadecimal)
error codes listed in the following table.
Code Error name
08 (Hex) Service not supported
15 (Hex) Too much data
13 (Hex) Not enough data
20 (Hex) Invalid parameter
11 (Hex) Reply data too large
16 (Hex) Object does not exist
Additional error code (response)
Always FF (Hex).
This example shows the instruction operands and results when 20 words of
data (IR 010 to IR029) in a Slave are read through a Master mounted in a CS/
CJ, CVM1 or CV-series PC.
For details on explicit messages, refer to the CS/CJ Series DeviceNet Units
Operation Manual (W380) for CS/CJ-series PCs, and refer to the DeviceNet
Operation Manual (W267) for CVM1 and CV-series PCs. For details on
CMND(194), refer to the CS Series Programmable Controllers Operation
Manual (W339) for CS-series PCs, and refer to the CVM1/CV Series CV500/
CV1000/CV2000/CVM1 Programmable Controllers Operation Manual: Ladder
Diagrams (W202) for CVM1 and CV-series PCs.
Master's node number:
Slave's network address: 1
Slave's node number:
Additional error code
(Always FF)
General error code
Source node number
The service code was invalid.
There was too much data. (For example, the
amount of write data exceeded the data area
boundary.)
There was too little data. (For example, an odd
number of bytes of write data were used in a
WRITE WORD DATA command.)
The starting word address was invalid.
The data area boundary was exceeded in a
DATA READ command.
The class ID or instance ID was invalid.
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Section 6-3
Meaning