Thanks to all the suggestions I got to help me with these strange HIC's. Since all the console guys like things the way they are (aside from this one set of HIC's acting weird), I tried various things to see if I could first correct, rather than re-design the problem. It looks like re-ordering the blocks on this scheme is working, or has worked for the last 16 hours anyway. I simply put the HV's before the HIC's in the block order, and it's back to normal again. I think if I had it to do over again, I would have not used PIDA's and used AOUT faceplates for the HIC's. That's all board HIC's really are, analog out stations. But since we had used PIDA's as HIC's in other applications successfully, it seemed like a natural extension. If we had started early with the AOUT faceplates, the console guys would have gotten used to them and it would be a much simpler loop. Thanks again, everyone who responded. Tim Lowell Control Systems Engineer Phillips Petroleum Company, Trainer Refinery Phone: 610-364-8362 Fax: 610-364-8211 tlowell@xxxxxxxx _______________________________________________________________________ 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