RE: AB KF2 at 19.2 Kbaud?
Alan Yes we looked into this but it was not feasible. As we are connecting to a AB SLC504 we needed the KF2 module. During our first attempt, our Foxboro rep. sold us on the idea of using FoxBlocks on the AW to tie directly to the PLC. This was a new feature that had been done successfully with Modicon PLC's and we were told the AB drivers had just been released. To make a long story short, it turned out Foxboro Development had not released the drivers, where Marketing thought they had (Go figure). A bouquet to our local reps as when they found out about the mistake, they made it right by giving us the equipment to make it work (old method but it works). About 4 months ago I was informed that the FoxBlocks for the AB series are now released. It would have been a better and cheaper solution, but we are committed to our present course. You may want to check it out. Regards John > -Original Message- > From: Alan J Schaff [SMTP:[EMAIL PROTECTED]] > Sent: September 8, 2000 6:49 AM > To: Foxboro DCS Mail List > Subject: RE: AB KF2 at 19.2 Kbaud? > > John, > We are looking at using the radio modem for a remote PLC. We are going to > try > to connect the modem directly to a comm port on the AI30. Have you tried > this > option? I like it because it eliminates the need for a KF2 box. Anyone > else > have experience using radio modems for Allen Bradly??? > > Thanks > Alan Schaff > > > > > > > > Campbell John C <[EMAIL PROTECTED]> on 09/07/2000 10:31:51 AM > > Please respond to Foxboro DCS Mail List > <[EMAIL PROTECTED]> > To: 'Foxboro DCS Mail List' cc: > 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) > &g
RE: AB KF2 at 19.2 Kbaud?
John, We are looking at using the radio modem for a remote PLC. We are going to try to connect the modem directly to a comm port on the AI30. Have you tried this option? I like it because it eliminates the need for a KF2 box. Anyone else have experience using radio modems for Allen Bradly??? Thanks Alan Schaff Campbell John C <[EMAIL PROTECTED]> on 09/07/2000 10:31:51 AM Please respond to Foxboro DCS Mail List <[EMAIL PROTECTED]> To: 'Foxboro DCS Mail List' -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 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?
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: 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?
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?
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]
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 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?
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 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?
David, I have seen it this way on account of cable length. Right or wrong, the Site Planning/Installation section of the Integrators for Allen-Bradley Controllers document (B0193RG-C on page 52), "For Reliable communicaition, however, the shorter (20 feet) cable should be used in configurations using a 19.2 k Baud transmission rate". I know this and the required communication throughput has effected our decision in the past. -Jason -Original Message- From: David Johnson [mailto:[EMAIL PROTECTED]] Sent: Wednesday, September 06, 2000 10:32 AM To: [EMAIL PROTECTED] 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?
>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]
