Oops.. OK, so 5ms. Sill, an FBM with an expander running PLB is a nice piece of work but often misapplied. > > From: "Johnson, Alex (Foxboro)" <ajohnson@xxxxxxxxxxx> > Date: 2005/05/12 Thu PM 02:38:09 CDT > To: foxboro@xxxxxxxxxxxxx > Subject: Re: [foxboro] Reduce IFL's for FBM > > > The resources are all shared. Like I said, use of multiple PLB blocks per > FBM will drive you crazy. > > > By the way, the cycle time on the LL in an FBM is 5ms for all 100 rungs. It > is very fast if somewhat small. > > 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 Heath, Graham > Sent: Thursday, May 12, 2005 11:52 AM > To: 'foxboro@xxxxxxxxxxxxx' > Subject: Re: [foxboro] Reduce IFL's for FBM > > Warning This neads more investigation looking at B0193aw the following > appears > When configuring PLBs for different segments of a single ladder diagram, > avoid assigning an > external input flag to more than one block. If two PLBs were to update the > same input flag, the > flag value received from the first block would be overwritten when the other > block was processed. > > Looking at the example quoted it definitely shows OFL_1 connected to one plb > and OFL_2 to another. I think I remember that all Technical identifiers are > common to all PLBs in an FBM. > > > Regds > Graham Heath > Senior Systems Engineer > INVENSYS UK > > > > -----Original Message----- > > From: foxboro-bounce@xxxxxxxxxxxxx On Behalf Of "Dirk Pauwels" > > <dirkpauwels_1@xxxxxxxxxxx> > > Sent: 12 May 2005 16:28 > > To: foxboro@xxxxxxxxxxxxx > > Subject: Re: [foxboro] Reduce IFL's for FBM > > > > That's interesting, I've never tried it either, the number of cout's is > > still restricted to the FBM, but more ifl's offer more possible > > interlocks. > > > > Rgds, > > > > Dirk > > > > >From: brad.s.wilson@xxxxxxxxxxxxxx > > >Reply-To: foxboro@xxxxxxxxxxxxx > > >To: foxboro@xxxxxxxxxxxxx > > >Subject: Re: [foxboro] Reduce IFL's for FBM > > >Date: Thu, 12 May 2005 10:21:37 -0500 > > > > > > >>> Martin Theobald wrote <<< > > >Reading the documentation (Volume 3 of B0193AX - Rev N) suggests that > > each > > >FBM can support up to eight PLB blocks. This is not a feature I have > > tried > > >or seen used. > > > > > >Yes, we have a couple of FBMs with multiple PLBs, although I remember > > that > > >there is a limit to the TOTAL number of lines in all PLBs running in an > > >FBM. I seem to recall that the number of lines allowed in an FBM is the > > >constant, regardless of the number of PLBs. But this would certainly > > allow > > >for more IFLs & OFLs. > > > > > >Brad Wilson > > >ExxonMobil Chemical Co > > >Edison Synthetics Plant > > >732-321-6115 > > >732-321-6177 fax > > >Brad.S.Wilson@xxxxxxxxxxxxxx > > > > > > > > > > > >_______________________________________________________________________ > > >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 > > > > > > > -- No attachments (even text) are allowed -- > -- Type: application/ms-tnef > > > > > _______________________________________________________________________ > 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 > > _______________________________________________________________________ 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