Mitsubishi Electric MELSEC iQ-R Series User Manual page 404

Class3 tag communications failed
The following table lists the actions to be taken if Class3 tag communications cannot be performed.
Check item
Are the settings in "EtherNet/IP Configuration" correct?
Is the tag data type specified correctly?
When the CC-Link IE TSN Plus module is an originator,
is an area not available for Class3 used?
Is the Path Segment specification set correctly?
When the CC-Link IE TSN Plus module is an originator,
is the data in the response area of the Class3/UCMM
communication area correct?
When the external device (target) is the CC-Link IE TSN
Plus module or RJ71EIP91, is the specified tag set as a
reserved connection?
Instance communications or message communications failed
The following table lists the actions to be taken if instance communications or message communications cannot be
performed.
Check item
Has communication start processing been performed
correctly with 'EtherNet/IP communication start request'
(Un\G7340096)?
Has the connection destination EtherNet/IP device been
registered in "EtherNet/IP Configuration"?
Can Class1 instance communications be performed?
Can UCMM message communications be performed?
Can Class3 message communications be performed?
18 TROUBLESHOOTING BY SYMPTOM
402
18.2 Troubleshooting Related to EtherNet/IP
Action
Check the values set in "EtherNet/IP Configuration".
When the following module function blocks are used, check the values set for the arguments.
• M+RJ71GN11_SE_EIP_Class3Originator_ReadTagData
• M+RJ71GN11_SE_EIP_Class3Originator_WriteTagData
Check that the data type of the tag set to the CC-Link IE TSN Plus module and the data type of the
tag set to the external device match. If they do not match, correct the tag data types and write the
parameters again.
• Check that 0002H (Class3 communications) is set as the initial value for the communication
method specification area of 'Class3/UCMM communication area' (Un\G7751680 to
Un\G8275967).
• Check that an area with a connection number for which Class3 communications parameters are
set in "EtherNet/IP Configuration" is used.
Check that the Path Segment specification in the request area of 'Class3/UCMM communication
area' (Un\G7751680 to Un\G8275967) is correctly set. ( Page 498 Class3/UCMM
communication area)
Check the value of the result storage area of Class3/UCMM communication area' (Un\G7751680 to
Un\G8275967). If the value is not 0, refer to the error code and perform troubleshooting. ( Page
441 Error Codes for the Message Communication Function (Client))
Check that the specified tag of the external device (target) is set as a reserved connection.
Action
• Check that a value other than 0 (start request) is set for 'EtherNet/IP communication start
request' (Un\G7340096).
• If 'EtherNet/IP communication continuation specification request' (Un\G7340104) is set to 16
(continue EtherNet/IP communication), set 'EtherNet/IP communication start request'
(Un\G7340096) to 0 (stop request) and then to a value other than 0 (start request) again.
When performing Class1 communications and Class3 communications, if the connection
destination EtherNet/IP device has not been registered in "EtherNet/IP Configuration", register it
and write the parameters again.
Page 403 Class1 instance communications failed
Page 403 UCMM message communications failed
Page 403 Class3 message communications failed