Explanation of "New inbound/outbound association" and "Max MMS read depth, resetting" Log Messages (Doc ID 3054750.1)

Last updated on OCTOBER 21, 2024

Applies to:

Goal

What do these log entries mean?

09:35:31.930 (1) IFE ASSOC New inbound association 00000204B4EFDB50 to IccpVcc_TBLT_CPNIE_ARP_Client from OpcUaServer, no match with a:inbound statements
09:35:31.930 (2) IFE ASSOC New outbound association 00000204B49926B0 from OpcUaServer to IccpVcc_TBLT_CPNIE_ARP_Client, no a:outbound statement

SYSTEM Max MMS read depth, resetting.

Also, from the logs we have observed the following:

1) at 09:30 manual Switchover was performed to the second redundant local Front end: [SERVER A] -> [SERVER B]
\Logs\LIVEDATA.LOG:
09:30 IFE ASSOC New outbound association B49931F0 from IccpVcc_XXX_ARP_Client to IccpAs_1B_XXX_ARP using a:outbound for
  IccpVcc_XXX_ARP_Client_assoclist
09:30 (2) IFE ASSOC Control variable for outbound to IccpVcc_XXX_ARP_Client_assoclist was changed to 2
09:30 (2) IFE TRANSFER_SETS Successful set up of IM transfer set 0 in remote server IccpVcc_XXX_ARP_Client_assoclist
IFE IccpVcc_XXX DsDefine RTX: Success defining Data Set D_XXX_ARP/xfer_list_1 at IccpVcc_XXX_ARP_Client_assoclist
..
IFE IccpVcc_XXX DsDefine RTX: Success defining Data Set D_XXX_ARP/xfer_list_10 at IccpVcc_XXX_ARP_Client_assoclist
IFE TRANSFER_SETS Successful set up of DS transfer set 1 in remote server IccpVcc_XXX_ARP_Client_assoclist
..
IFE TRANSFER_SETS Successful set up of DS transfer set 10 in remote server IccpVcc_XXX_ARP_Clientt_assoclist

Result in SCADA at 09:30 for the Data point: 00 (Error) -> 10 (Open) ~ OK, Valid data

2) at 09:35 Unexpected entries in the [SERVER A] Live Data Logs:
\Logs\LIVEDATA.LOG:
09:35 (1) IFE ASSOC New inbound association B4EFDB50 to IccpVcc_XXX_ARP_Client from OpcUaServer, no match with a:inbound statements
09:35 (2) IFE ASSOC New outbound association B49926B0 from OpcUaServer to IccpVcc_XXX_ARP_Client, no a:outbound statement

Result in SCADA at 09:35 for the Data point: 10 (Open) 00 (Error) -> 00 (Error) ~ Not OK, not valid

3) at 90:44 manual switchover to the second redundant OPC UA ICCP Front Ends 1B_XXX_ARP -> 1A_XXX_ARP
\Logs\LIVEDATA.LOG:
09:44 (2) IFE ASSOC Termination of outbound association B49931F0 to IccpAs_1B_XXX_ARP from IccpVcc_XXX_ARP_Client
09:45 (2) IFE ASSOC New outbound association B7691810 from IccpVcc_TBLT_XXX_Client to IccpAs_1A_XXX_ARP using a:outbound for
  IccpVcc_XXX_ARP_Client_assoclist
09:45 (2) IFE ASSOC Control variable for outbound to IccpVcc_XXX_ARP_Client_assoclist was changed to 2
09:45 (2) IFE TRANSFER_SETS Successful set up of IM transfer set 0 in remote server IccpVcc_XXX_ARP_Client_assoclist
IFE IccpVcc_XXX DsDefine RTX: Success defining Data Set D_XXX_ARP/xfer_list_1 at IccpVcc_XXX_ARP_Client_assoclist
…
IFE IccpVcc_XXX DsDefine RTX: Success defining Data Set D_XXX_ARP/xfer_list_10 at IccpVcc_XXX_ARP_Client_assoclist
09:45 (2) IFE TRANSFER_SETS Successful set up of DS transfer set 1 in remote server IccpVcc_XXX_ARP_Client_assoclist …
09:45 (2) IFE TRANSFER_SETS Successful set up of DS transfer set 10 in remote server IccpVcc_XXX_Client_assoclist
09:45 (2) IFE SYSTEM Max MMS read depth, resetting.

Result in SCADA at 09:45 for the Data point: 00 (Error) -> 10 (Open) ~ OK, Valid data again

Solution

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