RE: Detection of nodebus-failure
I have always been amused at the complete distrust the petrochem industry has for electronic communications of control data.Possibly this stems over from the early days of electronics when hardware was not reliable. The practice here has always been to not allow CB-LAN regulatory control. I have, however, set up several control schemes which use the LAN to pass feedforward data. On the flipside, the nodebus is used for regulatory control in many instances here. Basically, my opinion is that the control-databus should be robust enough to handle any type of control, "timing" being the only limitation (e.g. ControlNet). If we distrust Foxboro's nodebus/LAN, then we probably should not be using their control systems to run our processes as their design is apparently suspect. Kirk's little two-cents Kirk Carver ExxonMobil Chemical Beaumont Polyethylene Plant PO Box 2295 Beaumont, Texas 77704 Phone: 409-860-1314 [EMAIL PROTECTED] "Murphy, Daniel J" <[EMAIL PROTECTED]> on 03/30/2000 04:53:54 PM Please respond to "Foxboro DCS Mail List" <[EMAIL PROTECTED]> To: "'Foxboro DCS Mail List'" <[EMAIL PROTECTED]> cc:(bcc: Kirk D Carver/Beaumont/Mobil-Notes) Subject: RE: Detection of nodebus-failure I would be interested to know what the concensus is out there for doing regulatory control across the carrier-band LAN. For example, one PID block in one node talking to an AOUT block in another node. Here we don't trust the CB-LAN to do basic regulatory control. We prefer to hardwire the signal via FBM's. Anyone else do the same? The same question applies to peer-to-peer communications within a node. Anyone hardwire these connections as well? Dan Murphy BP Amoco Refinery Brisbane Australia --- This list is neither sponsored nor endorsed by the Foxboro Company. All postings from this list are the work of list subscribers and no warranty is made or implied as to the accuracy of any information disseminated through this medium. By subscribing to this list you agree to hold the list sponsor(s) blameless for any and all mishaps which might occur due to your application of information received from this mailing list. To be removed from this list, send mail to [EMAIL PROTECTED] with "unsubscribe foxboro" in the Subject. Or, send any mail to [EMAIL PROTECTED]
Re: A-B PLC question
Which series is the "open controller", 1771 or 1775? The 1771 was a basic module, if I remember right. I know that most 1771 and 1775 setups can communicate to any machine that runs a normal C compiler via ControlNet or Ethernet. Kirk Kirk Carver ExxonMobil Chemical Beaumont Polyethylene Plant PO Box 2295 Beaumont, Texas 77704 Phone: 409-860-1314 [EMAIL PROTECTED] "g. lu" <[EMAIL PROTECTED]> on 05/07/2000 04:09:11 AM Please respond to "Foxboro DCS Mail List" <[EMAIL PROTECTED]> To: [EMAIL PROTECTED] cc:(bcc: Kirk D Carver/Beaumont/Mobil-Notes) Subject: A-B PLC question Not a Foxboro question but there appears to be a lot of A-B PLC expertise here. My question is: Does A-B PLC or any other PLC vendor has a control processor which allows C programming? On www.ab.com, there is a open controller. Anybody has experience with it? Thanks. Guoqiang Lu --- This list is neither sponsored nor endorsed by the Foxboro Company. All postings from this list are the work of list subscribers and no warranty is made or implied as to the accuracy of any information disseminated through this medium. By subscribing to this list you agree to hold the list sponsor(s) blameless for any and all mishaps which might occur due to your application of information received from this mailing list. To be removed from this list, send mail to [EMAIL PROTECTED] with "unsubscribe foxboro" in the Subject. Or, send any mail to [EMAIL PROTECTED]
Re: AB KF2 at 19.2 Kbaud?
>From our in house AB guru: " I do not know of a situation in which it wouldn't work at 19.2K, but the bandwidth requirement is small: the bottleneck is the GP, not the DF1 line. If he's actually getting real empirical results back showing a huge ==x2 improvement when moving the DF1 connection from 9600 to 19.2K, then I'd be both surprised and suspecting his ABSCAN and compound configuration. " and from our local rep: " First, let's clear up any potential confusion. 1770-KF2 - Stand alone box w/ 120VAC power (from outlet) that converts DH+ messages to RS-232C DF1 messages for communicating with the Foxboro. 1785-KE - PLC "slide-in" module that does the exact same thing. (It fits in a 1771 I/O chassis). The 1770-KF2 does NOT have an option for communicating at 19.2K The 1785-KE DOES let you go 19.2K. Other than that, they are the same beast. The only (potential) draw back to going to 19.2K baud on a 1785-KE module is the baud rate is less noise resistant. It does work, though, and I have little or no problems with it handling that (blazing?!?!) speed! You shouldn't see any problems in your installations, since you guy's typically use well shielded cable for your serial interfaces. Kirk, I know you have a lot of "KE" modules out there, but I do think you are using some KF2 modules also, although I don't know where. The Foxboro, or any DCS, can not tell the difference between the two, since they're are basically the same thing, only in a different housing." Kirk Carver ExxonMobil Chemical Beaumont Polyethylene Plant PO Box 2295 Beaumont, Texas 77704 Phone: 409-860-1314 [EMAIL PROTECTED] - David Johnson <[EMAIL PROTECTED]> on 09/06/2000 09:32:08 AM Please respond to "Foxboro DCS Mail List" <[EMAIL PROTECTED]> To: [EMAIL PROTECTED] cc:(bcc: Kirk D Carver/Beaumont/Mobil-Notes) Subject: AB KF2 at 19.2 Kbaud? I have noticed that most of the Allen-Bradley KF2 modules I come across in the field are running at 9600 baud. I also know of some instances where a Foxboro Integrator 30 is communicating with AB KF2s at 19.2 Kbaud. Is there any reason not to run the baud rate at 19.2K? You sure get a lot more I/O throughput that way. Regards, David --- This list is neither sponsored nor endorsed by the Foxboro Company. All postings from this list are the work of list subscribers and no warranty is made or implied as to the accuracy of any information disseminated through this medium. By subscribing to this list you agree to hold the list sponsor(s) blameless for any and all mishaps which might occur due to your application of information received from this mailing list. To be removed from this list, send mail to [EMAIL PROTECTED] with "unsubscribe foxboro" in the Subject. Or, send any mail to [EMAIL PROTECTED] --- This list is neither sponsored nor endorsed by the Foxboro Company. All postings from this list are the work of list subscribers and no warranty is made or implied as to the accuracy of any information disseminated through this medium. By subscribing to this list you agree to hold the list sponsor(s) blameless for any and all mishaps which might occur due to your application of information received from this mailing list. To be removed from this list, send mail to [EMAIL PROTECTED] with "unsubscribe foxboro" in the Subject. Or, send any mail to [EMAIL PROTECTED]
RE: AB KF2 at 19.2 Kbaud?
It's the Foxboro name for the gateway: GP = Gateway Processor. I believe ours are GP30's... upgraded from GP10's a couple of years ago Kirk Kirk Carver ExxonMobil Chemical Beaumont Polyethylene Plant PO Box 2295 Beaumont, Texas 77704 Phone: 409-860-1314 [EMAIL PROTECTED] - Campbell John C <[EMAIL PROTECTED]> on 09/07/2000 09:31:51 AM Please respond to "Foxboro DCS Mail List" <[EMAIL PROTECTED]> To: "'Foxboro DCS Mail List'" <[EMAIL PROTECTED]> cc:(bcc: Kirk D Carver/Beaumont/Mobil-Notes) Subject: RE: AB KF2 at 19.2 Kbaud? Very interesting Kirk, we also are using KF2 modules at 9600 baud, but with a small twist. We are connecting to a SLC504 via a radio modem. By the way, this may be a stupid question, but what is a GP? Regards John Campbell > -Original Message- > From: Kirk D Carver [SMTP:[EMAIL PROTECTED]] > Sent: September 6, 2000 2:04 PM > To: Foxboro DCS Mail List > Subject: Re: AB KF2 at 19.2 Kbaud? > > > > From our in house AB guru: > > " I do not know of a situation in which it wouldn't work at 19.2K, but > the > bandwidth requirement is small: the bottleneck is the GP, not the DF1 > line. If > he's actually getting real empirical results back showing a huge ==x2 > improvement when moving the DF1 connection from 9600 to 19.2K, then I'd be > both > surprised and suspecting his ABSCAN and compound configuration. " > > > and from our local rep: > > > " First, let's clear up any potential confusion. > > 1770-KF2 - Stand alone box w/ 120VAC power (from outlet) that converts DH+ > messages to RS-232C DF1 messages for communicating with the Foxboro. > > 1785-KE - PLC "slide-in" module that does the exact same thing. (It fits > in > a 1771 I/O chassis). > > The 1770-KF2 does NOT have an option for communicating at 19.2K > The 1785-KE DOES let you go 19.2K. > Other than that, they are the same beast. > > The only (potential) draw back to going to 19.2K baud on a 1785-KE module > is > the baud rate is less noise resistant. > It does work, though, and I have little or no problems with it handling > that > (blazing?!?!) speed! You shouldn't see any problems in your > installations, > since you guy's typically use well shielded cable for your serial > interfaces. > > Kirk, I know you have a lot of "KE" modules out there, but I do think you > are using some KF2 modules also, although I don't know where. The > Foxboro, > or any DCS, can not tell the difference between the two, since they're are > basically the same thing, only in a different housing." > > > > Kirk Carver > ExxonMobil Chemical > Beaumont Polyethylene Plant > PO Box 2295 > Beaumont, Texas 77704 > Phone: 409-860-1314 > [EMAIL PROTECTED] > - > > > > > David Johnson <[EMAIL PROTECTED]> on 09/06/2000 09:32:08 AM > > Please respond to "Foxboro DCS Mail List" > <[EMAIL PROTECTED]> > > To: [EMAIL PROTECTED] > cc:(bcc: Kirk D Carver/Beaumont/Mobil-Notes) > Subject: AB KF2 at 19.2 Kbaud? > > > > > > I have noticed that most of the Allen-Bradley KF2 modules I come across in > the field are running at 9600 baud. I also know of some instances where a > Foxboro Integrator 30 is communicating with AB KF2s at 19.2 Kbaud. Is > there any reason not to run the baud rate at 19.2K? You sure get a lot > more > I/O throughput that way. > > Regards, > David > > > --- > This list is neither sponsored nor endorsed by the Foxboro Company. All > postings from this list are the work of list subscribers and no warranty > is made or implied as to the accuracy of any information disseminated > through this medium. By subscribing to this list you agree to hold the > list sponsor(s) blameless for any and all mishaps which might occur due to > your application of information received from this mailing list. > > To be removed from this list, send mail to > [EMAIL PROTECTED] > with "unsubscribe foxboro" in the Subject. Or, send any mail to > [EMAIL PROTECTED] > > > > > > > > --- > This list is neither sponsored nor endorsed by the Foxboro Company. All > postings from this list are the work of list subscribers and no warranty > is made or implied as to the accuracy of any information disseminated > through this medium. By subscribing to thi
Re: AB KF2 at 19.2 Kbaud?
Talked with our AB guy, and he had this to say: "The latest version of the KF2 manual 1770-6.5.13 (dated 1989!) does not document that switch setting." He goes on to state that there were some release notes in 1995, but they don't explain any different switching either. and "I still feel that, if it is able to go 19.2K, then do it." He has experience that says if you are less than 50 ft, with a good shielded cable, in an IO room, then the 19.2K will work. Kirk Kirk Carver ExxonMobil Chemical Beaumont Polyethylene Plant PO Box 2295 Beaumont, Texas 77704 Phone: 409-860-1314 [EMAIL PROTECTED] - [EMAIL PROTECTED] on 09/07/2000 09:41:59 AM Please respond to "Foxboro DCS Mail List" <[EMAIL PROTECTED]> To: Foxboro DCS Mail List <[EMAIL PROTECTED]> cc:(bcc: Kirk D Carver/Beaumont/Mobil-Notes) Subject: Re: AB KF2 at 19.2 Kbaud? This confused me more than helped to clear things up. If the following is true. "The 1770-KF2 does NOT have an option for communicating at 19.2K" Does this mean the 19.2K dip switch setting is not really available? The SW6 settings shown on the KF2 cover include 19.2K. We have contemplated running at 19.2K, but haven't because of our current cable lengths are well over the 20 foot maximum recommended length. Jim Murphy Eli Lilly and Company Kirk D Carver <[EMAIL PROTECTED]> on 09/06/2000 01:03:37 PM Please respond to Foxboro DCS Mail List <[EMAIL PROTECTED]> To: Foxboro DCS Mail List <[EMAIL PROTECTED]> cc: Subject: Re: AB KF2 at 19.2 Kbaud? >From our in house AB guru: " I do not know of a situation in which it wouldn't work at 19.2K, but the bandwidth requirement is small: the bottleneck is the GP, not the DF1 line. If he's actually getting real empirical results back showing a huge ==x2 improvement when moving the DF1 connection from 9600 to 19.2K, then I'd be both surprised and suspecting his ABSCAN and compound configuration. " and from our local rep: " First, let's clear up any potential confusion. 1770-KF2 - Stand alone box w/ 120VAC power (from outlet) that converts DH+ messages to RS-232C DF1 messages for communicating with the Foxboro. 1785-KE - PLC "slide-in" module that does the exact same thing. (It fits in a 1771 I/O chassis). The 1770-KF2 does NOT have an option for communicating at 19.2K The 1785-KE DOES let you go 19.2K. Other than that, they are the same beast. The only (potential) draw back to going to 19.2K baud on a 1785-KE module is the baud rate is less noise resistant. It does work, though, and I have little or no problems with it handling that (blazing?!?!) speed! You shouldn't see any problems in your installations, since you guy's typically use well shielded cable for your serial interfaces. Kirk, I know you have a lot of "KE" modules out there, but I do think you are using some KF2 modules also, although I don't know where. The Foxboro, or any DCS, can not tell the difference between the two, since they're are basically the same thing, only in a different housing." Kirk Carver ExxonMobil Chemical Beaumont Polyethylene Plant PO Box 2295 Beaumont, Texas 77704 Phone: 409-860-1314 [EMAIL PROTECTED] - David Johnson <[EMAIL PROTECTED]> on 09/06/2000 09:32:08 AM Please respond to "Foxboro DCS Mail List" <[EMAIL PROTECTED]> To: [EMAIL PROTECTED] cc:(bcc: Kirk D Carver/Beaumont/Mobil-Notes) Subject: AB KF2 at 19.2 Kbaud? I have noticed that most of the Allen-Bradley KF2 modules I come across in the field are running at 9600 baud. I also know of some instances where a Foxboro Integrator 30 is communicating with AB KF2s at 19.2 Kbaud. Is there any reason not to run the baud rate at 19.2K? You sure get a lot more I/O throughput that way. Regards, David --- This list is neither sponsored nor endorsed by the Foxboro Company. All postings from this list are the work of list subscribers and no warranty is made or implied as to the accuracy of any information disseminated through this medium. By subscribing to this list you agree to hold the list sponsor(s) blameless for any and all mishaps which might occur due to your application of information received from this mailing list. To be removed from this list, send mail to [EMAIL PROTECTED] with "unsubscribe foxboro" in the Subject. Or, send any mail to [EMAIL PROTECTED] --- This list is neither sponsored nor endorsed by the Foxboro Company. All postings from this list are the work of list subscribers and no warranty is made or implied as to the accuracy of any informa
Re: AB KF2 at 19.2 Kbaud?
Thanks Glen. I'll let my guys over here know that Kirk Carver ExxonMobil Chemical Beaumont Polyethylene Plant PO Box 2295 Beaumont, Texas 77704 Phone: 409-860-1314 [EMAIL PROTECTED] - "Glen" <[EMAIL PROTECTED]> on 09/07/2000 10:24:04 AM Please respond to "Foxboro DCS Mail List" <[EMAIL PROTECTED]> To: "Foxboro DCS Mail List" <[EMAIL PROTECTED]> cc:(bcc: Kirk D Carver/Beaumont/Mobil-Notes) Subject: Re: AB KF2 at 19.2 Kbaud? The newer revision KF2's do have the 19.2K option. But unless you make a 12' cable don't try it. It will be slower than 9600 with all the retry's. Glen Bounds - Original Message - Subject: Re: AB KF2 at 19.2 Kbaud? > > This confused me more than helped to clear things up. If the > following is true. > > "The 1770-KF2 does NOT have an option for communicating at 19.2K" > > Does this mean the 19.2K dip switch setting is not really > available? The SW6 settings shown on the KF2 cover include 19.2K. > We have contemplated running at 19.2K, but haven't because of our > current cable lengths are well over the 20 foot maximum recommended > length. > > Jim Murphy > Eli Lilly and Company --- This list is neither sponsored nor endorsed by the Foxboro Company. All postings from this list are the work of list subscribers and no warranty is made or implied as to the accuracy of any information disseminated through this medium. By subscribing to this list you agree to hold the list sponsor(s) blameless for any and all mishaps which might occur due to your application of information received from this mailing list. To be removed from this list, send mail to [EMAIL PROTECTED] with "unsubscribe foxboro" in the Subject. Or, send any mail to [EMAIL PROTECTED] --- This list is neither sponsored nor endorsed by the Foxboro Company. All postings from this list are the work of list subscribers and no warranty is made or implied as to the accuracy of any information disseminated through this medium. By subscribing to this list you agree to hold the list sponsor(s) blameless for any and all mishaps which might occur due to your application of information received from this mailing list. To be removed from this list, send mail to [EMAIL PROTECTED] with "unsubscribe foxboro" in the Subject. Or, send any mail to [EMAIL PROTECTED]
RE: Rolling average
We had done a similar thing, but in the angle domain (if you will) and in our PI system. The hard part, in my opinion, was the poor graphical capabilities of the DM to produce a wind direction graphic. Long story that involved TAC and alot of "Oh, so that's how our product works" Kirk Kirk Carver ExxonMobil Chemical Beaumont Polyethylene Plant PO Box 2295 Beaumont, Texas 77704 Phone: 409-860-1314 [EMAIL PROTECTED] - "Johnson,Alex" <[EMAIL PROTECTED]> on 09/11/2000 08:57:27 AM Please respond to "Foxboro DCS Mail List" <[EMAIL PROTECTED]> To: Foxboro DCS Mail List <[EMAIL PROTECTED]> cc:(bcc: Kirk D Carver/Beaumont/Mobil-Notes) Subject: RE: Rolling average Neat and sweet. Regards, Alex Johnson The Foxboro Company 10707 Haddington Houston, TX 77043 713.722.2859 (v) 713.722.2700 (sb) 713.932.0222 (f) [EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]> -Original Message- From: Schouten, Frits JF [SMTP:[EMAIL PROTECTED]] Sent: Sunday, September 10, 2000 3:53 PM To: 'Foxboro DCS Mail List' Subject: RE: Rolling average Talking about rolling average, I use a AIN block with filter option. That just works a gem. Anyone ever thought about 0-360deg wind vane damping? See the problem around North? 1,360,1,360. would average 180 wouldn't it? Here is what I did. In a CALC block split out the SIN and COS and output it to say RO02/03 Those two outputs each go to an AIN block with filter option ON and filtertime say 1. The output of those AIN blocks is then fed back in the CALC block to be ASINed and ACOSed and with a bit of smarts put back together to form 0-360deg. There you have it. A very well stabilised wind vane signal which can now be used to drive an directional indicator (FoxView) without driving the operator mad. Cheers, Frits Schouten. BHP-NZSteel. EOM NOTICE - This message contains information intended only for the use of the addressee named above. It may also be confidential and/or privileged. If you are not the intended recipient of this message you are hereby notified that you must not disseminate, copy or take any action in reliance on it. If you have received this message in error please notify [EMAIL PROTECTED] --- This list is neither sponsored nor endorsed by the Foxboro Company. All postings from this list are the work of list subscribers and no warranty is made or implied as to the accuracy of any information disseminated through this medium. By subscribing to this list you agree to hold the list sponsor(s) blameless for any and all mishaps which might occur due to your application of information received from this mailing list. To be removed from this list, send mail to [EMAIL PROTECTED] with "unsubscribe foxboro" in the Subject. Or, send any mail to [EMAIL PROTECTED] --- This list is neither sponsored nor endorsed by the Foxboro Company. All postings from this list are the work of list subscribers and no warranty is made or implied as to the accuracy of any information disseminated through this medium. By subscribing to this list you agree to hold the list sponsor(s) blameless for any and all mishaps which might occur due to your application of information received from this mailing list. To be removed from this list, send mail to [EMAIL PROTECTED] with "unsubscribe foxboro" in the Subject. Or, send any mail to [EMAIL PROTECTED] --- This list is neither sponsored nor endorsed by the Foxboro Company. All postings from this list are the work of list subscribers and no warranty is made or implied as to the accuracy of any information disseminated through this medium. By subscribing to this list you agree to hold the list sponsor(s) blameless for any and all mishaps which might occur due to your application of information received from this mailing list. To be removed from this list, send mail to [EMAIL PROTECTED] with "unsubscribe foxboro" in the Subject. Or, send any mail to [EMAIL PROTECTED]
Re: List Archive now available on WWW
NIce list. Does the server automatically archive posts? Kirk Carver ExxonMobil Chemical Beaumont Polyethylene Plant PO Box 2295 Beaumont, Texas 77704 Phone: 409-860-1314 [EMAIL PROTECTED] - "Forbes,Harry" <[EMAIL PROTECTED]> on 09/15/2000 10:13:40 AM Please respond to "Foxboro DCS Mail List" <[EMAIL PROTECTED]> To: Foxboro DCS Mail List <[EMAIL PROTECTED]> cc:(bcc: Kirk D Carver/Beaumont/Mobil-Notes) Subject: List Archive now available on WWW I have not finished with this archive. Nevertheless it is ready enough so that if people want to try it they might as well. To reach the archive directly browse to: http://forums.invensys.com/suites/dispatch.exe/Foxboro_DCS_Mail_List This will show you the last 10 list topics (whoppee!) and you can page down for more. If you want to see the last 25, 50, 100, or ALL topics at once, then you'll have to go to: http://forums.invensys.com/suites and click the "Register" button. You need only provide a login name and password. This is no more revealing than registering an alias at Yahoo! or AOL. To change view options after registering: 1) Enter the archive by selecting "Foxboro DCS Mailing List" 2) Select "More...DisplayOptions" Bugs: 1) SEARCH is a bug. Don't ask me why at the moment. I am working on it. Of course having a SEARCH function is the MAIN reason for creating the archive in the first place, so this is uncool :-( . I'll let you know as soon as it is fixed. 2) You can't go to the "top-level" of this site (forums.invensys.com). This is a feature, not a bug. Nobody has built a "top-level". This site hosts a bunch of different "forums" that are private. The mailing list archive is a squatter (a welcome one, though) on this server. h - Harry W. Forbes Foxboro Corporate Marketing C42-2E, 33 Commercial St Foxboro, MA 02035 USA +1 617.335.1474 (mobile) +1 508.549.6389 (office) +1 508.549.6788 (fax) [EMAIL PROTECTED] --- This list is neither sponsored nor endorsed by the Foxboro Company. All postings from this list are the work of list subscribers and no warranty is made or implied as to the accuracy of any information disseminated through this medium. By subscribing to this list you agree to hold the list sponsor(s) blameless for any and all mishaps which might occur due to your application of information received from this mailing list. To be removed from this list, send mail to [EMAIL PROTECTED] with "unsubscribe foxboro" in the Subject. Or, send any mail to [EMAIL PROTECTED] --- This list is neither sponsored nor endorsed by the Foxboro Company. All postings from this list are the work of list subscribers and no warranty is made or implied as to the accuracy of any information disseminated through this medium. By subscribing to this list you agree to hold the list sponsor(s) blameless for any and all mishaps which might occur due to your application of information received from this mailing list. To be removed from this list, send mail to [EMAIL PROTECTED] with "unsubscribe foxboro" in the Subject. Or, send any mail to [EMAIL PROTECTED]
RE: Block Parameter Descriptions
www.thinkingbytes.com has some neat database apps for PALM V's Kirk Carver ExxonMobil BPEP (409) 860-1314 email: [EMAIL PROTECTED] "D.B. H." <[EMAIL PROTECTED]> on 03/09/2001 10:09:45 AM Please respond to "Foxboro DCS Mail List" <[EMAIL PROTECTED]> To: [EMAIL PROTECTED] cc:(bcc: Kirk D Carver/Beaumont/Mobil-Notes) Subject: RE: Block Parameter Descriptions I saw on the net websites that have software for a PDA for calibrating instrumentation in the field. Cool! Diane Harris Original Message Follows From: Fitzgerrell Kevin <[EMAIL PROTECTED]> Reply-To: "Foxboro DCS Mail List" <[EMAIL PROTECTED]> To: Foxboro DCS Mail List <[EMAIL PROTECTED]> Subject: RE: Block Parameter Descriptions Date: Fri, 9 Mar 2001 02:25:02 -0800 (PST) MIME-Version: 1.0 Received: from [64.212.3.197] by hotmail.com (3.2) with ESMTP id MHotMailBC71FAB100A84004319340D403C5FC8F0; Fri Mar 09 02:26:00 2001 Received: from yahoo.com by lists.CyberSpaces.net with SMTP; Fri, 9 Mar 2001 03:25:15 -0700 >From [EMAIL PROTECTED] Fri Mar 09 02:27:27 2001 Message-ID: <[EMAIL PROTECTED]> In-Reply-To: <1173C23AAA74D2119CED00A0C9E98911739D0D@SSPRQEXC2> Sender: <[EMAIL PROTECTED]> Precedence: Bulk List-Software: LetterRip Pro 3.0.7 by Fog City Software, Inc. List-Subscribe: <mailto:[EMAIL PROTECTED]> List-Unsubscribe: <mailto:[EMAIL PROTECTED]> Me! Regards, Kevin FitzGerrell --- [EMAIL PROTECTED] wrote: > Hi: > A "very easy question" not very related with this one > > How are using the members of this List their PDA for Process Control? > > Thanks, > Pedro > > -Mensaje original- > De: Sascha Wildner [mailto:[EMAIL PROTECTED]] > Enviado el: 07 March 2001 11:37 > Para: Foxboro Mailing List > Asunto: Block Parameter Descriptions > > > Dear List, > > I remember that there used to be (way back in '96 or so) a document > which > described all parameters of all blocks. > > FoxDoc used to refer to this document in the individual block > descriptions > at that time. At one point in history the parameter descriptions > were moved > into the block descriptions. Does anyone have this all parameters > document > in electronic form (HTML preferred) or a pointer where I could > download it? > It would be really cool to have it on my PDA. > > Regards, > Sascha > > > __ Do You Yahoo!? Get email at your own domain with Yahoo! Mail. http://personal.mail.yahoo.com/ --- This list is neither sponsored nor endorsed by the Foxboro Company. All postings from this list are the work of list subscribers and no warranty is made or implied as to the accuracy of any information disseminated through this medium. By subscribing to this list you agree to hold the list sponsor(s) blameless for any and all mishaps which might occur due to your application of information received from this mailing list. To be removed from this list, send mail to [EMAIL PROTECTED] with "unsubscribe foxboro" in the Subject. Or, send any mail to [EMAIL PROTECTED] _ Get your FREE download of MSN Explorer at http://explorer.msn.com --- This list is neither sponsored nor endorsed by the Foxboro Company. All postings from this list are the work of list subscribers and no warranty is made or implied as to the accuracy of any information disseminated through this medium. By subscribing to this list you agree to hold the list sponsor(s) blameless for any and all mishaps which might occur due to your application of information received from this mailing list. To be removed from this list, send mail to [EMAIL PROTECTED] with "unsubscribe foxboro" in the Subject. Or, send any mail to [EMAIL PROTECTED] --- This list is neither sponsored nor endorsed by the Foxboro Company. All postings from this list are the work of list subscribers and no warranty is made or implied as to the accuracy of any information disseminated through this medium. By subscribing to this list you agree to hold the list sponsor(s) blameless for any and all mishaps which might occur due to your application of information received from this mailing list. To be removed from this list, send mail to [EMAIL PROTECTED] with "unsubscribe foxboro" in the Subject. Or, send any mail to [EMAIL PROTECTED]
RE: PID equations
We had to create it once as the Fox help desk was, well, no help. We used Foxboro's original 1970-something document on PID equations (ancient thing) that the IA stuff was based on. I will try to dig up what we got. It's a coupled equation, which is a big bother from a control theory side, but was apparently the thing to do with the original pneumatic controllers. Also, you have to work in the time domain to get the full effect of what the thing is doing (again, not too elegant). Kirk Kirk Carver ExxonMobil BPEP (409) 860-1314 email: [EMAIL PROTECTED] Eudilson Núñez Cossio <[EMAIL PROTECTED]> on 03/20/2001 08:40:05 AM Please respond to "Foxboro DCS Mail List" <[EMAIL PROTECTED]> To: "'Foxboro DCS Mail List'" <[EMAIL PROTECTED]> cc:(bcc: Kirk D Carver/Beaumont/Mobil-Notes) Subject: RE: PID equations Ben, What I need is the exact equation. The section that you mention is only philosophical, I think. Thanks. -Mensaje original- De: Mansfield, Ben [mailto:[EMAIL PROTECTED]] Enviado el: Martes 20 de Marzo de 2001 7:51 AM Para: 'Foxboro DCS Mail List' Asunto: RE: PID equations I believe you'll find what you're looking for in the Foxboro document B0193AX, "Integrated Control Block Descriptions" in the PID, PIDA, etc. chapter. There is a section towards the end called "Detailed Operation" that describes how the output is computed based on the controller mode (MODOPT). Ben -Original Message- From: Eudilson Núñez Cossio [mailto:[EMAIL PROTECTED]] Sent: Tuesday, March 20, 2001 11:57 AM To: 'Foxboro DCS Mail List' Subject: PID equations Hi list, I looking the equation for PID controllers that exist on I/A Foxboro. Someone can send me this information? Thanks in advanced. --- This list is neither sponsored nor endorsed by the Foxboro Company. All postings from this list are the work of list subscribers and no warranty is made or implied as to the accuracy of any information disseminated through this medium. By subscribing to this list you agree to hold the list sponsor(s) blameless for any and all mishaps which might occur due to your application of information received from this mailing list. To be removed from this list, send mail to [EMAIL PROTECTED] with "unsubscribe foxboro" in the Subject. Or, send any mail to [EMAIL PROTECTED] --- This list is neither sponsored nor endorsed by the Foxboro Company. All postings from this list are the work of list subscribers and no warranty is made or implied as to the accuracy of any information disseminated through this medium. By subscribing to this list you agree to hold the list sponsor(s) blameless for any and all mishaps which might occur due to your application of information received from this mailing list. To be removed from this list, send mail to [EMAIL PROTECTED] with "unsubscribe foxboro" in the Subject. Or, send any mail to [EMAIL PROTECTED] --- This list is neither sponsored nor endorsed by the Foxboro Company. All postings from this list are the work of list subscribers and no warranty is made or implied as to the accuracy of any information disseminated through this medium. By subscribing to this list you agree to hold the list sponsor(s) blameless for any and all mishaps which might occur due to your application of information received from this mailing list. To be removed from this list, send mail to [EMAIL PROTECTED] with "unsubscribe foxboro" in the Subject. Or, send any mail to [EMAIL PROTECTED] --- This list is neither sponsored nor endorsed by the Foxboro Company. All postings from this list are the work of list subscribers and no warranty is made or implied as to the accuracy of any information disseminated through this medium. By subscribing to this list you agree to hold the list sponsor(s) blameless for any and all mishaps which might occur due to your application of information received from this mailing list. To be removed from this list, send mail to [EMAIL PROTECTED] with "unsubscribe foxboro" in the Subject. Or, send any mail to [EMAIL PROTECTED]
