In today's article I'll show you how to use Rockwell's new Ethernet/IP Capacity Tool.
The replacement for Rockwell's discontinued Ethernet/IP Capacity Tool can now be found inside of Integrated Architecture Builder (IAB.)
Note: To learn how you can get a free copy of IAB, check out my previous article HERE.
Then select, “Ethernet/IP Capacity Subsystem,” as shown below:
In this example I chose an L16:
After you select a Controller, if you put your mouse pointer over the question mark to the right side of your controller, you'll see a popup that lists your controller's specifications.
In the case of my controller, it shows the L16 only supports a total of four Ethernet Nodes:
Then I choose 1734 Point I/O, and enter a chassis count of two to indicate that I have two chassis with the same configuration.
Next I add the number of discrete and analog modules I intend to install, along with their RPIs, and then click on OK to add my I/O to the system:
Back in the main window I now click on “Compute” to calculate how much of my L16's “capacity” these two racks of Point IO use with the results are shown below:
Note: If you attempt to add more modules to a product than it supports, you'll see a red warning messages like the one shown below:
With my above errors corrected, I clicked on OK to close the I/O screen, and then clicked on the “Compute” button again.
Below you can see the results which show that I've exceeded my L16's max Ethernet Node count of 4:
After reducing my Flex I/O racks from three to two, I decided to add four PanelView Plus HMI's to the system, each with 1000 tags updating at 50ms:
When I recomputed the results, I found those four PanelView Plus's exceeded the L16's HMI “packets per second” (PPS) limit by a whopping 200%!
In an attempt to reduce the required HMI PPS, I changed the PanelView Plus update rate from 50ms to 100ms, and lowered the tag count to 800, both of which helped get my system under 100% utilization.
That said, there was very little bandwidth left, and I definitely wouldn't recommend designing a system with limits in the “yelllow” caution zone:
Note: While IAB does create each drop on the network, all the I/O modules used are the defaults, leaving it to the user to update them with the desired modules.
To watch a video of the above, check out Episode 52 of The Automation Minute Season Four below:
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Shawn began sharing automation news and know-how online in 1996 when he launched his first BBS. Then in 1999 he moved to the internet launching ShawnMichael.com, which he later renamed ShawnMTierney.com. In 2013 he moved his automation efforts to a new website, TheAutomationBlog.com, which has since become the most popular independent industrial automation blog on the web.
Latest posts by Shawn Tierney (see all)
- How to add Ethernet Flex I/O to ControlLogix - September 10, 2019
- What's New At The Automation Blog And School, Summer 2019 - September 6, 2019
- Creating your first Siemens S7-1500 Program (video) - August 14, 2019
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