Re: [foxboro] PLC interface question





We had a lot of issues with the Integrator 30's, so early on we adopted the
standard that all control would be hardwired. It looks like the new FBM 224
may solve the speed and stability issues that we used to have. With the old
Integrator 2 seconds was about as fast as we could run real-time and we
were never comfortable with that and we usually end up loading the
Integrators with tons of analyzer data and with the price of Integrators is
was more cost effective for us to run wire than to purchase additional
Integrators.
If you would like you can contact me off line at the phone number below.
Thanks
Troy


Troy L. Brazell
Duke Energy Field Services
Sr. Process Control Analyst
ISA CCST
Phone (405) 263 4810 ext. 24
Cell    (806) 898 4340

Okarche C&M
Route 4 P.O. Box 40
Okarche, OK. 73762



                                                                                
                                                     
                      "Loyd Greer"                                              
                                                     
                      <LGREER@xxxxxxxx>        To:       
<foxboro@xxxxxxxxxxxxx>                                                     
                      Sent by:                 cc:                              
                                                     
                      foxboro-bounce@fr        Subject:  Re: [foxboro] PLC 
interface question                                        
                      eelists.org                                               
                                                     
                                                                                
                                                     
                                                                                
                                                     
                      08/19/2004 08:02                                          
                                                     
                      AM                                                        
                                                     
                      Please respond to                                         
                                                     
                      foxboro                                                   
                                                     
                                                                                
                                                     
                                                                                
                                                     




Troy,
Can I ask why you used hardware connections for the remote control
functions? I am configuring a ModBus connection to a gas compressor control
panel and was just curious.  I am planning to use control functions with
ModBus.

Thanks,
 Loyd Greer
Great Lakes Chemical

>>> tlbrazell@xxxxxxxxxxxxxxx 08/13/04 07:03AM >>>





We installed a FBM 224 at one of our site connected to a Turbotronics panel
on a Solar C3 turbine. We have be extremely pleased with the communication
interface. It is setup RS232 Modbus getting 356 registers and appears to be
handling it very well. We still hardware any control or external shutdown
functions. Took us just a bit to figure out the transitions.
Thanks
Troy


Troy L. Brazell
Duke Energy Field Services
Sr. Process Control Analyst
ISA CCST
Phone (405) 263 4810 ext. 24
Cell    (806) 898 4340

Okarche C&M
Route 4 P.O. Box 40
Okarche, OK. 73762




                      "Jim Mowrey"

                      <jmowrey@bellsout        To:
<foxboro@xxxxxxxxxxxxx>

                      h.net>                   cc:

                      Sent by:                 Subject:  Re: [foxboro] PLC
interface question
                      foxboro-bounce@fr

                      eelists.org



                      08/12/2004 08:45

                      PM

                      Please respond to

                      foxboro







If it does talk Modbus RTU, you can interface via a FBM224 card.  Just
installed one of these at one of my sites.

Went pretty well, except the card does not support double precision numbers
(4 registers instead of 2 for a float).

Also, can have redundant ports, but not redundant cards talking to the same
Slave device.

Jim

-----Original Message-----
From: foxboro-bounce@xxxxxxxxxxxxx [mailto:foxboro-bounce@xxxxxxxxxxxxx] On
Behalf Of brad.s.wilson@xxxxxxxxxxxxxx
Sent: Tuesday, August 10, 2004 11:01 AM
To: foxboro@xxxxxxxxxxxxx
Subject: [foxboro] PLC interface question

Hi all,

I've worked with PLC-I/A interfaces in a past life, but I have none in my
current position. We're looking to install an Allen-Bradley MicroLogix 1500
in the utility area, and I'm told it has a built-in "MODBUS RTU" port
(although I don't see that on the AB website). We're running v4.3 so I'm
limited in which interface cards I can use - INI15, INI30, etc. My past
experience is with AB SLC50's. Does anybody have any experience with this
AB MicroLogix 1500 interfacing to I/A?

Brad Wilson
ExxonMobil Chemical Co
Edison Synthetics Plant
732-321-6115
732-321-6177 fax
Brad.S.Wilson@xxxxxxxxxxxxxx



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_______________________________________________________________________
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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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_______________________________________________________________________
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Systems (formerly The Foxboro Company). Use the info you obtain here at
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