I'll send you some information under separate cover, but there is a flaw in devices that were manufactured between certain dates that sounds like your problem. Regards, Alex Johnson Invensys Process Systems Invensys Systems, Inc. 10707 Haddington Houston, TX 77043 713.722.2859 (voice) 713.722.2700 (switchboard) 713.932.0222 (fax) ajohnson@xxxxxxxxxxx -----Original Message----- From: foxboro-bounce@xxxxxxxxxxxxx [mailto:foxboro-bounce@xxxxxxxxxxxxx] On Behalf Of Paul Anderson Sent: Tuesday, April 26, 2005 10:23 PM To: foxboro@xxxxxxxxxxxxx Subject: [foxboro] Intermittent communication failure? We're having intermittent communication failure between our I/A system and Foxboro IDP-10 differential pressure transmitters. This results in bad data, and system alarm for device failure, but the device always recovers. The solution pursued to date has been to replace the transmitter, this cures the problem in the field, but bench tests afterward show the device to be good. We're using foxcomm protocol, and an FBM-243 smart I/O card. Does anyone have any thoughts? --=20 Paul Anderson wackyvorlon@xxxxxxxxx _______________________________________________________________________ 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 _______________________________________________________________________ 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