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Jean Femia

Jean Femia writes about technical subjects and has focused on automation and control systems for more than 15 years. She likes learning about technology and taking corners in her Honda S2000.
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Recent Posts

OptoNews: Add context to your HMI with free SVG image library

Posted by Jean Femia on Nov 18, 2015 5:25:09 PM


Have you discovered our secret cache of SVG images?

You can use these free images in your groov mobile operator interface or in other places where SVG (scalable vector graphics) files are supported.

Bring them into your interface and make them the size you need. Because they're SVG, they automatically scale, so they look good whether they're on a monitor or a smartphone.

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Topics: groov, optonews, OptoNews 2015-11-18

OptoNews tip: PAC Control Communication Handles

Posted by Jean Femia on Nov 18, 2015 5:24:29 PM

Do you use communication handles in your PAC Control strategy?

Or are you thinking, "What's a communication handle?"

In either case, this tip is for you.

A communication handle is a powerful type of variable in PAC Control. You'll use it for three main reasons:

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Topics: Tips, optonews, PACs, PAC Project, OptoNews 2015-11-18

OptoNews: G4 I/O - Going strong since 1989

Posted by Jean Femia on Nov 4, 2015 4:57:08 PM


If you've used Opto 22 products for a long time, you may very well have some colorful G4 digital I/O modules in a panel somewhere. They were probably installed back in the 1990s.

Still reliably monitoring sensors and activating outputs, these G4s are likely the workhorses of your automation system. Why would you ever want to replace them?

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Topics: Discrete control, optonews, Migration, I/O, PAC Project, Optomux, OptoNews 2015-11-04

OptoNews: Choose components for your control system

Posted by Jean Femia on Nov 4, 2015 4:56:15 PM

Choose the software, controllers, I/O, and more for your application, with help from our new interactive demo about SNAP PAC System components.

You'll find answers to questions like these:

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Topics: optonews, PACs, I/O, PAC Project, OptoNews 2015-11-04

OptoNews: ISA Process Control & Safety Symposium

Posted by Jean Femia on Nov 4, 2015 4:55:53 PM

Join us in Houston, Texas, November 9-12, 2015, for the ISA Process Control & Safety Symposium.

You'll learn about instrumentation, communications, control systems, safety, and security.

The symposium is geared toward engineers, technicians, and plant managers from oil and gas, refining, chemical, petrochemical, and other process industries.

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Topics: Process control, groov, optonews, Events & conferences, Oil & gas, OptoNews 2015-11-04

OptoNews tip: More on the why of sinking and sourcing

Posted by Jean Femia on Nov 4, 2015 4:54:23 PM

We talked about sinking and sourcing in a previous OptoNews tech tip.

But it's a subject that causes a lot of confusion, so it's worth revisiting.

Sinking and sourcing basically refer to the two methods of wiring a digital DC circuit.

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Topics: Discrete control, Tips, optonews, I/O, OptoNews 2015-11-04

OptoNews: groov an Engineers' Choice Awards Finalist!

Posted by Jean Femia on Oct 21, 2015 5:25:00 PM

With groov 3 you can build your own mobile operator interface for just about any automation system or equipment.

  • You're not limited to one brand or family.
  • You can mix systems from multiple manufacturers on the screen if you want.
  • You just drag and drop gadgets on the screen and then tag them. 
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Topics: groov, Remote monitoring, optonews, OptoNews 2015-10-21

OptoNews: E1 & E2 brain board firmware release

Posted by Jean Femia on Oct 21, 2015 5:20:04 PM

firmware update is now available for E1 and E2 brain boards. If your current firmware is R1.1d or R1.1e, you'll want to install the new firmware. See the firmware readme for details.

For those of you not familiar with E1s and E2s, they are serial- and Ethernet-based brain boards typically used with G1 or G4 I/O systems. The E1 is for digital I/O and the E2 for analog I/O. 

We designed the E1 and E2 as drop-in replacements for older serial-based B1 and B2 brain boards. 

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Topics: optonews, Migration, I/O, Optomux, OptoNews 2015-10-21

OptoNews: Troubleshooting resources for the SNAP PAC System

Posted by Jean Femia on Oct 21, 2015 5:18:09 PM

Opto 22 products are known for their reliability.

But if your SNAP PAC System—SNAP PAC controllers and brains, PAC Control strategy, PAC Display HMI project—isn't working the way you expect, we have some good resources to help you troubleshoot issues.

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Topics: optonews, OptoNews 2015-10-21

OptoNews tip: Totalizer helps you choose which pump to run

Posted by Jean Femia on Oct 21, 2015 5:17:45 PM

Let's say you have four pumps available, and you don't run them all at once. When it's time to start one, you want to choose the one with the least wear. 

You can decide which one to start by comparing the total amount of time each pump has run. That's a job for a totalizer.

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Topics: Tips, optonews, PACs, I/O, PAC Project, OptoNews 2015-10-21

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