I use this method often for ensurign GDEV blocks reamin in auto. Never had a problem. We are running V6.3 on B boxes Ken Moore NSCC-Wdrf Plant Are there a lot of people using the method described below? :TC100_PIDA.HOLIM.100 I like it but I can remeber having intermittent problems with connecting paramters in a block to other parameters within that same block. The most famous was a block initialization problem when linking the .FBK parameter to the same blocks .OUT parameter. An unresolved linkage could occur causing the controller output to drift toward zero. Those issue may have been fixed but we have long since avoided internal linkages. It would be nice to know if this link is dependable. Thanks for any feedback. Tom VandeWater Control Systems Developer/Analyst Dow Corning Corp. Carrollton, KY USA ________________________________________________________________________ This email has been scanned for all viruses by the MessageLabs Email Security System. For more information on a proactive email security service working around the clock, around the globe, visit http://www.messagelabs.com ________________________________________________________________________ _______________________________________________________________________ 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