Using Explicit Devicenet Messages - Omron DeviceNet CV Series Operation Manual

C200H I/O Link Units
Error Response
6-1-9

Using Explicit DeviceNet Messages

Using CMND to Read Data
(CS-series and CV-series)
250
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Unit is mounted and the memory area. Be sure to specify bytes within the
data area range.
When there is an error in the explicit command, the C200H I/O Link Unit will
return an error response as illustrated below.
Response Block
Parameters
No. of Received Bytes (Response)
The number of bytes received from the source node address is returned in
hexadecimal.
Source Node Address (Response)
The node address of the C200H I/O Link Unit that returned the response is
returned in hexadecimal.
General Error Code (Response)
The error code is returned in single-byte (2-digit) hexadecimal, as shown in
the following table.
Error code
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.
In the following example, the CMND instruction is used to read words CIO 010
to CIO 029 (20 words) on the Slave Unit, from the Master in a CS-series or
CV-series PLC.
Note If a CS-series PLC is being used, this example is applicable only when a CS-
series Master Unit is mounted. Use the IOWR instruction when a C200HX/
General error
code
Source
node address
No. of received bytes
Name
Section 6-1
Additional error code
(FF Hex: fixed)
Details
There is an error in the service
code.
There is too much data. (The
data specified by the data write
command exceeds the area
range.)
There is not enough data (e.g.,
an odd number of bytes of data
was specified for the WORD
DATA WRITE command).
An error was made specifying
the word address.
The data specified by the data
read command exceeds the
area range.
There is an error in the Class ID
or Instance ID.