Ken, You would have to look at release notes for your current rev of the CP's to be sure, but I think you are correct. Certain new eeprom on FBM's will not work on CP's with older eeprom levels. Terry ________________________________ De: foxboro-bounce@xxxxxxxxxxxxx de la part de Ken Heywood Date: mar. 2007-07-24 05:13 À: foxboro@xxxxxxxxxxxxx Objet : [foxboro] FBM10 Communication Issue I have a bunch of FBM10s that show communication failure on both A and B fieldbus. I am assured that these were working. However, in this system using a CP30, they fail. I do have one FBM from a different area that works, so I know the system is okay. Is it possible that these failing FBMs have a later EEPROM update that would make fieldbus communications fail on earlier systems? -------------------------------------------------------- This message (and any associated files) is intended only for the use of the individual or entity to which it is addressed and may contain information that is CONFIDENTIAL, subject to copyright or constitutes a trade secret. If you are not the intended recipient you are hereby notified that any dissemination, copying or distribution of this message, or files associated with this message, is strictly prohibited. If you have received this message in error, please notify us immediately by replying to the message and deleting it from your computer. Messages sent to and from PCS may be monitored. Internet communications cannot be guaranteed to be secure or error-free as information could be intercepted, corrupted, lost, destroyed, arrive late or incomplete, or contain viruses. Therefore, we do not accept responsibility for any errors or omissions that are present in this message, or any attachment, that have arisen as a result of e-mail transmission. If verification is required, please request a hard-copy version. Any views or opinions presented are solely those of the author and do not necessarily represent those of the company. _______________________________________________________________________ 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 -- No attachments (even text) are allowed -- -- Type: application/ms-tnef -- File: winmail.dat _______________________________________________________________________ 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