Re: [foxboro] FBM241 - input pulse rate
- From: "Douglas G. Lloyd" <doug@xxxxxxxxxxxxxxx>
- To: <foxboro@xxxxxxxxxxxxx>
- Date: Tue, 17 Apr 2012 12:23:12 -0400
Ken/Dirk,
Not to beat a dead horse, but you could use PLB logic in the FBM241 to avoid
the CP BPC issue. Pulse capture resolution (using PLB counters) is then up
to the processing speed of the PLB logic (5-10msec?) and the actual FBM
hardware/software...
Regards,
Doug
-----Original Message-----
From: foxboro-bounce@xxxxxxxxxxxxx [mailto:foxboro-bounce@xxxxxxxxxxxxx] On
Behalf Of Dirk Pauwels
Sent: Tuesday, April 17, 2012 9:36 AM
To: foxboro@xxxxxxxxxxxxx
Subject: Re: [foxboro] FBM241 - input pulse rate
Hi Ken,
OK ths confirm's the 241 is not suitable for our purpose. We'll use a 207
instead.
Thanks
Dirk
-----Original Message-----
From: foxboro-bounce@xxxxxxxxxxxxx [mailto:foxboro-bounce@xxxxxxxxxxxxx] On
Behalf Of Ken Heywood
Sent: dinsdag 17 april 2012 15:30
To: foxboro@xxxxxxxxxxxxx
Subject: Re: [foxboro] FBM241 - input pulse rate
The thing that's probably missing here is that FBM241 is a discrete I/O
module. The I/O resolution is subject to the CP's BPC. If you are running
100ms then your minimum reliable "capture" of those pulses is possibly 5 or
less per second.
Thank You,
Ken Heywood
Calibration Laboratory Manager
PROCESS CONTROL SERVICES, INC.
Established in 1983
http://www.processcontrolservices.com
mailto:KHeywood@xxxxxxxxxxxxxxxxxxxxxxxxxx
Telephone: 734-453-0620
Wireless: 508-241-2040
===============================================
-----Original Message-----
From: foxboro-bounce@xxxxxxxxxxxxx [mailto:foxboro-bounce@xxxxxxxxxxxxx] On
Behalf Of Dirk Pauwels
Sent: Tuesday, April 17, 2012 9:00 AM
To: foxboro@xxxxxxxxxxxxx
Subject: Re: [foxboro] FBM241 - input pulse rate
Hi Terry,
Couldn't find anything in the PSS either, that's why I asked, maybe someone
knows the rate or had experience with it.
I'll probably buy a 207 card, I need approx. 10pulse/sec ( 10hz)
Joe,
I have plenty of 241's in stock, but no 207/206 and I don't need very high
frequency pulses so I was wondering if a 241 could handle that. Probably
not, otherwise they wouldn't have developed a 207/206 :-) Too bad, no
savings today.....
thanks
Dirk
-----Original Message-----
From: foxboro-bounce@xxxxxxxxxxxxx [mailto:foxboro-bounce@xxxxxxxxxxxxx] On
Behalf Of Terry Doucet
Sent: dinsdag 17 april 2012 14:38
To: foxboro@xxxxxxxxxxxxx
Subject: Re: [foxboro] FBM241 - input pulse rate
Dirk,
The PSS for the FBM241 does not contain any information regarding the pulse
rate or duration (timing) of the ON or the OFF state. Not sure if I have
the latest PSS. You may want to check. I would only use it for slow
changing signals as in ON for many seconds or OFF for many seconds.
The FBM206 and FBM207 are the recommended IO for pulse input signals.
Terry
> From: dirk.pauwels@xxxxxxxxxx
> To: foxboro@xxxxxxxxxxxxx
> Subject: [foxboro] FBM241 - input pulse rate
> Date: Tue, 17 Apr 2012 10:51:04 +0000
>
> Does anyone know the input pulse rate for the 241 carts? I know FBM206 has
an input pulse rate of 10hz to 25khz, Can I presume the 241 is 0-10hz?
> Thanks,
>
> Dirk
>
>
>
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_______________________________________________________________________
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
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_______________________________________________________________________
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
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