General
status
code (hex)
Status name Description of status
1C Missing attribute list entry
data
The service did not supply an attribute in a list of attributes that was
needed by the service to perform the requested behavior
.
1D Invalid attribute value list The service is returning the list of attributes supplied with status in-
formation for those attributes that were invalid.
1E Embedded service error An embedded service resulted in an error.
1F Vendor specific error A vendor-specific error occurred. The Additional Code Field of the
error response defines the error
. This is a general error code that is
used only for errors that do not correspond to any of the error codes
in this table and are not in an object class definition.
20 Invalid parameter A parameter for the requested service is invalid. This code is used
when a parameter does not meet the requirements of the specifica-
tion and/or the requirements defined in an application object specifi-
cation.
21 Write-once value or medi-
um already written
An attempt was made to write to a write-once medium (e.g. WORM
drive or PROM) that was previously written or cannot be changed.
22 Invalid Reply Received An invalid reply was received. (For example, the reply service code
does not match the request service code. Or
, the reply message is
shorter than the minimum expected reply size.) This status code is
used for other causes of invalid replies.
23-24 Reserved by CIP for future extensions.
25 Key Failure in path The key segment that was included as the first segment in the path
does not match the destination module. The object specific status
must indicate which part of the key check failed.
26 Path Size Invalid The size of the path that was sent with the service request is either
too large or too small for the request to be routed to an object.
27 Unexpected attribute in list An attempt was made to set an attribute that is not able to be set at
this time.
28 Invalid Member ID The member ID specified in the request does not exist in the speci-
fied class, instance, and attribute.
29 Member not settable A request to modify a non-modifiable member was received.
2A Group 2 only server gen-
eral failure
This error code is reported only by group 2 only servers with 4K or
less of code space and only in place of Service not supported,
Attribute not supported, or Attribute not settable.
2B-CF Reserved by CIP for future extensions.
D0-FF Reserved for Object Class
and service errors
This range of error codes is to be used to indicate object class-spe-
cific errors. This code range is used only when none of the error co-
des in this table accurately reflect the error that occurred. The addi-
tional code field is used to describe the general error code in more
detail.
Examples of Additional Status When General Status Is 01 Hex (Status of
Connection Manager Object)
General
Status
(hex)
Additional
Status
(hex)
Description
01 0100 Connection in use or duplicate forward open.
01 0103 Transport class and trigger combination not supported.
01 0106 Ownership conflict.
8 CIP Message Communications
8-37
NJ/NX-series CPU Unit Built-in EtherNet/IP Port User’s Manual (W506)
8-2 CIP Message Communications Client Function
8
8-2-10 Response Codes
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