Does the same behaviour occur if the RI0Xs of the CALC are connected to RO0Xs of the various seq blocks? Presumably that should eliminate any OM involvement, correct? Brad Wilson ExxonMobil Chemical Co Edison Synthetics Plant 732-321-6115 732-321-6177 fax Brad.S.Wilson@xxxxxxxxxxxxxx _______________________________________________________________________ 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: http://www.freelists.org/list/foxboro to subscribe: mailto:foxboro-request@xxxxxxxxxxxxx?subject=join to unsubscribe: mailto:foxboro-request@xxxxxxxxxxxxx?subject=leave