I have not used an external horn before so this may sound stupid but... Does the DO need to be wired to an actual horn? Can a script be written in an IND that watches the DO and when it senses a true to false condition, can the script issue a dmcmd horns command to silence the annunciator keyboard horn? (or something like that) "Hicks, David" <david.hicks@xxxxxxxxxxxxxxxx> Sent by: foxboro-bounce@xxxxxxxxxxxxx 07/20/2007 11:53 AM Please respond to foxboro@xxxxxxxxxxxxx To <foxboro@xxxxxxxxxxxxx> cc Subject Re: [foxboro] Silencing horns across the ATS It is documented and as you are aware the common alarm group does not function across an ATS between v8.x and v6.x/v7.x workstations. What has been done to provide the same functionality is to add an external horn to a DO. You can then add the C:B.P to the horn.cfg file on all of the workstations that were previously in the commgrp.cfg file which silences the audible horn. This is assuming that you have a DO near your workstations to use or within wire range. You would also need to change the horn.cfg file so that no audible alarms are provided at the GCIO. Any alarm silence pushbutton on the MK will silence the audible alarm. David Hicks = All knowing group, We have both 8.3 XP P92s and WP51Ds 6.5.1 in our control room. The P92s = and Mesh have recently been added. All workstations have an annunciator = keyboard. All workstations are in the same common alarm group = (commgrp.cfg). Our intention was that when the operator pressed the = silence button on any annunciator, all horns would silence (as it did = before the P92s). As it turns out, the ability to silence horns can not = done across the ATS. Has anyone found a solution? = = _______________________________________________________________________ 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=3Djoin to unsubscribe: mailto:foxboro-request@xxxxxxxxxxxxx?subject=3Dleave = Confidentiality Notice: The information contained in this electronic message and any attachment(s) = to this message are intended for the exclusive use of the recipient(s) and = may contain confidential, privileged or proprietary information. If you are= not the intended recipient, please notify the sender immediately, delete a= ll copies of this message and any attachment(s). Any other use of the E-Mai= l by you is prohibited. _______________________________________________________________________ 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 _______________________________________________________________________ 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