Allen Bradley 1784-PKTS Driver
NEW ALLEN BRADLEY PKTS SER A PKTS PKTS NIB Business & Industrial, Automation, Motors & Drives, Control Systems & PLCs eBay! ALLEN BRADLEY PKTS / PKTS (RQANS1) INTERFACE CARD PCI BUS W/RIO SCANNER 1CHANNEL. PLCCenter/Radwell is a Division of. AB sales rep says 'It should, I don't see why not' But then again, they have .. PLC's simply cannot handle the load of both serving out packets.
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Allen Bradley 1784-PKTS Driver
You need one, or perhaps two for redundancy OPC servers running as data aggregators. If you are running Allen Bradley 1784-PKTS of them, carefully think this out and come up with a solution that comes as close as possible to appearing as a single aggregator on the network such as installing Matrikon RedundancyMaster on all of your RS-View 32 clients.
I'd prefer to just Allen Bradley 1784-PKTS everything but this is a much more complicated subject. If you do this, it will be SLOW. PLC's simply cannot handle the load of both serving out packets through a dozen connections AND doing what they are meant to do.
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Older PLC's are capable of around packets per second at most. ControlLogix can get to about packets per second double that with an EN2T. A typical PC with just a Allen Bradley 1784-PKTS Ethernet card is easily capable of doing 20, packets per second or more.
So Allen Bradley 1784-PKTS long as the software is written properly, you need just one PC or perhaps two at most gathering Allen Bradley 1784-PKTS from your various PLC's. Those PC's in turn can handle dozens if not hundreds of PC's requesting data. The OPC server PC's need to be dedicated to this use so that you don't see unpredictable slow downs or other things happening that have nothing to do with your PLC communications.
Don't use it for anything else unless you monitor it carefully to verify that it can handle the extra load, such as acting as a BOOTP or name server or some other relatively low bandwidth, innocuous task. And be sure that this "minor" task isn't heavy on bandwidth, and that it doesn't grow in terms of bandwidth and CPU power down the road to become a major task, either. I don't recommend using Allen Bradley 1784-PKTS as file servers, Allen Bradley 1784-PKTS RS-Asset Centre, web servers, databases, or anything else that is or has the potential to be either a heavy bandwidth or heavy CPU application.
If you do this, you will introduce unpredictable delays and Allen Bradley 1784-PKTS into your system either now or at some point in the future. I also don't recommend running virus checkers or backup software on this machine for the same reason because both are notorious for causing problems.
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In fact I'd even consider running the whole Allen Bradley 1784-PKTS off a fanless, diskless industrial PC and booting off a CompactFlash card with Windows Embedded so that I can prevent writes to the file system and treat it essentially as a "brick". It is after all more of a piece of equipment than a "PC".
The one exception to the data aggregator rule Allen Bradley 1784-PKTS be for instance if your plant is very easy to isolate. For instance if you have two distinctly different production areas, say area A and area B, that do not in general share data, then this calls for two different data aggregators and two different tag databases. There can be a common historian shared between them, but it is best to set up two totally different OPC servers.
If you do so however, remember to avoid duplicating data on both OPC servers at all costs. Do not configure PLC's to be monitored by multiple OPC Allen Bradley 1784-PKTS, or you will easily fall right back into the trap of duplicating data. Redundancy with OPC servers is not easy. Matrikon calls theirs Redundancy Broker. I don't know which HMI you are using but Wonderware allows you to configure multiple paths for redundancy, as a built-in function.
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At around HMI's, running some sort of virtualization system to support redundancy becomes more cost effective than using the multiple OPC "client" solution that Kepware and Matrikon sell. OK, now let's get down to bandwidth optimization.
You need to go through all of your tags and look at first what the scan rates are set to. You need to establish a few different traffic classes and set everything accordingly. I suggest that parameter settings that rarely change get bumped down Allen Bradley 1784-PKTS maybe seconds, thermocouples and other "slow" readings get bumped down to seconds, totalizers and Allen Bradley 1784-PKTS tables that are informational and not used for control get bumped down to seconds, and so forth.