Hi List We are chasing FBM PIO errors and the previous threads state the importance of the DCM ECB Order. The CP60 ECB order has been covered before but I wish to confirm the relationship between DCMs and Child FBM ECBs. Does the order of ECBs make a difference? Should all the DCM ECBs be at the top with the DCMs that have the shortest chain of FBMs first? Should the child FBM's ECB be directly under its DCM ECB? Is the order of I/O FBMs relevant? would this be the best layout. In the STATION_ECB compound DCM ECB (shortest string) Child FBM ECB Child FBM ECB Child FBM ECB DCM ECB (longer string) Child FBM ECB Child FBM ECB Child FBM ECB Child FBM ECB and so on... Shaun NOTICE - This message and any attached files may contain information that is confidential, legally privileged or proprietary. It is intended only for use by the intended recipient. If you are not the intended recipient or the person responsible for delivering the message to the intended recipient, be advised that you have received this message in error. Any dissemination, copying, use or re-transmission of this message or attachment, or the disclosure of any information therein, is strictly forbidden. BlueScope Steel Limited does not represent or guarantee that this message or attachment is free of errors, virus or interference. If you have received this message in error please notify the sender immediately and delete the message. Any views expressed in this email are not necessarily the views of BlueScope Steel Limited. _______________________________________________________________________ This mailing list is neither sponsored nor endorsed by Invensys Process Systems (formerly The Foxboro Company). Use the info you obtain here at your own risks. Read http://www.thecassandraproject.org/disclaimer.html foxboro mailing list: //www.freelists.org/list/foxboro to subscribe: mailto:foxboro-request@xxxxxxxxxxxxx?subject=join to unsubscribe: mailto:foxboro-request@xxxxxxxxxxxxx?subject=leave