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You will be driving the N2 bus harder than it has ever been driven before so any weakness will come out. We’ve seen multiple areas where improvements can be made in existing N2 buses. If there has been a history of devices going off line in the pure Metasys environment it is a sign that something is wrong. We always advise our integration partners to validate the N2 bus as part of determining the scope of an integration project. Some JCI N2 devices have a termination switch, others have a self termination capability. When you remove a legacy supervisory controller from the N2 bus it may have been providing termination that needs to be replaced to keep the bus operating within spec. Note that you may have to a
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In fact, we advise them to specify in their contract that the customer deliver to them an in-spec and working N2 bus with wo If there has been a history of devices going off line in the pure Metasys environment it is a sign that something is wrong.
We will confirm availability to each destination when processing your order. The Metasys N2 s2uusb485 follows the RS standard for its physical and electrical characteristics. It is very important to validate that the N2 bus is within specs s2usb4485 part of the planning for a S2uzb485 integration. You can still do a very successful integration. Details for many N2 devices are provided now. Unfortunately, some OPC clients ignore the Quality indicator and instead default the data values to zero.
Validating the N2 bus, repairing any installation problems, and removing sources of electrical interference improve performance. Note that you e2usb485 have to a Breaking the N2 bus into smaller segments distributes the load.
When we designed the S4 Open Appliances we determined that we would stop short of providing these services. In preparation for a N2 integration we always recommend that you:.
Two of your first tasks when visiting a new project should be: In many cases we will point you back to JCI documentation for details. You will be driving the N2 bus harder than it has ever been driven before so any weakness will come out.
This indicates if the S4 Open Appliance is successfully talking to the field devices and retreiving s2ussb485 points. Emailing this address or calling in and dictating your case details to the person manning the phone starts the process. For the cost of a typical high end USB to RS adapter you also have a very powerful diagnostic tool.
Alternatively, there are different dial-in numbers people can use to log a new case one for each of the three different cities where PSS is located. Determine the issue and correct it before proceeding with the integration.
Review as built drawings and any other documentation that is available for the Metasys installation. One of the things that we did include in the design is the ability to easily determine the application loaded into N2 devices, the firmware version running in the device, the original configuration file name, etc.
What do I look for if there are legacy N2 S2usn485 Problems? Each segment may come into a separate Downstream N2 Interface on a N2 Router or each one come into a separate N2 Router Poll rates may need to be adjusted to frequencies more realistic for the capabilities of the N2 bus. Make sure that each N2 bus segment is within electrical specifications.
M-Tools Now Available from S4. The original of this presentation was used as a catalyst to focus and inspire the discussions during that session. s2usn485
According to the documentation that comes with the ComBus Quick Tester the guidelines s2usbb485 a successful test are:. Either interface can be used without the need to set jumpers or change dip switch settings.
How do I tune the N2 Bus for maximum performance? We always advise our integration partners to validate the N2 bus as part of determining the scope of an integration project. In preparation for a N2 integration we always recommend that you: That means that the logic driving those points is back in an NCM, or other supervisory controller.
If anything is marginal, it will be exposed by the additional load put onto the system. Not available outside of North America.