Mitsubishi Electric MELSEC iQ-R Series User Manual page 403

Class1 tag communications failed
The following table lists the actions to be taken if Class1 tag communications cannot be performed.
Check item
When the CC-Link IE TSN Plus module is the originator,
has the external device already performed the multicast
communication with other originators?
UCMM tag communications failed
The following table lists the actions to be taken if UCMM tag communications cannot be performed.
Check item
Is the tag data type specified correctly?
When the CC-Link IE TSN Plus module is an originator,
is a Class3-dedicated area 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?
Action
• Mach the settings of the CC-Link IE TSN Plus module with those of other originators that are
being communicated with.
• Check the settings of other originators that are being communicated with the external device.
• Correct the system configuration so that the external device communicates with the CC-Link IE
TSN Plus module only.
Action
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, check the following.
• When the CC-Link IE TSN Plus module is an originator, correct the data type of the tag set in the
buffer memory.
• When the CC-Link IE TSN Plus module is a target, correct the data type of the tag set in
"EtherNet/IP Configuration".
• Check that 0001H (UCMM 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)
When the CC-Link IE TSN Plus module is a client, check the value of the result storage area of
'Class3/UCMM communication area' (Un\G7751680 to Un\G8275967). If the value is not 0, check
the error code. ( Page 441 Error Codes for the Message Communication Function (Client))
18 TROUBLESHOOTING BY SYMPTOM
18.2 Troubleshooting Related to EtherNet/IP
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