I'm migrating an SSC application from a P92 (SSC Support) to a P91 running I/A 8.4.3 (SSC Support not required). On the Old System using SSC Support I was able to use OPC to read/write to the .SE parameter. On the new systems 8.4.3, (Not running SSC Support) I'm having problems reading/writing directly to the .SE parameter. I can work around by reading the .SE bit in the BLKSTA parameter, but writing is still a problem. Anyone have any insights on this? mk -- Michael Kessler,P.Eng KIC Engineered Systems 435 Huron St, London, On N5Y 4J4 (519) 488-5317 Office (519) 672-2299 Fax www.kicsystems.ca _______________________________________________________________________ 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