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Entries for the 'Allen Bradley PLC' Category

5 Tips for Getting Started in RSLogix 5000
Nicklas Thystrup

5 Tips for Getting Started in RSLogix 5000

RSLogix 5000 is very intuitive and easy to use PLC programming software used for Allen-Bradley PLCs. There are a few tips and tricks that are very useful to know starting out, especially if coming from a different PLC programming language. These will help increase efficiency, improve code structure, and avoid time-consuming downloads when commissioning. Set up Quick Keys for the Ladder Editor  Clicking around to build the Ladder code for PLCs can be time consuming. Rockwell has k...

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DMC on Tour: Modernization Made Easy on the E&M New Stuff Road Show
Ryan Taylor

DMC on Tour: Modernization Made Easy on the E&M New Stuff Road Show

Jimmy Condon and I joined E&M on the 2016 edition of their annual New Stuff Road Show to help Siemens showcase their new Modernization Made Easy initiative that was launched this year. The two-week tour, which stretched from Sacramento to San Diego, was a great opportunity to connect vendors, system integrators, and end-users and give hands-on access to the latest in automation technology. In addition to answering a wide variety of general automation questions, drinking lots of coffee,...

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Siemens Decentralized Motion Control with SINA_POS
Otto Gottlieb

Siemens Decentralized Motion Control with SINA_POS

In a previous blog I discussed programming motion control with a S7-1500 with Technology Objects in TIA Portal. This is a very popular method of doing the motion control on the PLC. We can also offload the motion control to the drive control unit using Siemens’ library motion blocks such as SINA_POS and allow the PLC to control more drives. The Siemens library motion blocks are also available for S7-300 PLCs, which do not support the same Technology Objects as S7-1500 PLC...

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Rockwell FactoryTalk Studio Basics: Global Objects and Tag Substitution
Gina Zak

Rockwell FactoryTalk Studio Basics: Global Objects and Tag Substitution

Global Objects in Rockwell Automation / Allen-Bradley's FactoryTalk HMI development environment are useful to bring modularization and efficient repeatability of common elements in your project. This basic feature has been around for a long time, but knowing how to use Global Objects effectively can greatly reduce your development time, chance of errors, and number of displays to license at runtime.  In this tutorial, I will show you how to set up a simple control valve as a Global O...

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Connecting to a Legacy AB PLC-5
Devon Fritz

Connecting to a Legacy AB PLC-5

Sometimes the scariest part of working with legacy hardware is connecting to it with your laptop. This blog will lead you through an easy way to connect one such legacy PLC built by Allen Bradley, the PLC-5 series. Look here if trying to connect to a B&R System. Hardware - PLC-5 Series (catalog PDF here) - Laptop with DB-9/Serial/RS-232 or USB port - DB-25 to DB-9 cable (possible cable here) - Null Modem changer (if cable is not null modem) - RS-232 to USB protoco...

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Hitting the Ground Running…to China
Ryan Landwehr

Hitting the Ground Running…to China

As we enter the Christmas season, I can’t help but think back to this time last year. I was less than three months away from graduating college and faced with a big decision. It was only a few days before Christmas Eve, that I decided to start the next chapter of my life at DMC Boston. Before I knew it, June rolled around and I found myself on a city bus in Chicago heading into my first day of training at the Chicago office. I’d had summer internships in the past and felt like I had ...

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Source Code Protection in Studio 5000 Logix Designer
Jason Mayes

Source Code Protection in Studio 5000 Logix Designer

While working with a customer on a recent RSLogix 5000 project (now called Studio 5000), there was a need to protect some proprietary source code. In this particular case, DMC had developed a custom Add-On Instruction (AOI) to be used within the project that contained some unique logic that the client wished to protect. This is incredibly easy to do. Rockwell provides an easy tool for this that comes prepackaged with RSLogix.  Since protecting intellectual property or touchy algorithms w...

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Getting Young Kids Interested in Technology
Frank Riordan

Getting Young Kids Interested in Technology

I'm always trying to get my daughters, ages 8 & 5, interested in what we do here at DMC. It's a challenge because I have a hard enough time explaining what DMC does to someone I meet at a cocktail party, never mind a couple of young kids. However, I recently had two great experiences with them that actually piqued their interest. The first was a trip to Legoland in Carlsbad, California. In addition to Miniland USA, Land of Adventure and other fun rides, there also is a Lego Factory T...

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Siemens vs Allen-Bradley: Function Blocks
Nick Shea

Siemens vs Allen-Bradley: Function Blocks

Siemens and Rockwell Automation are two giants competing in industrial automation technology today. Rockwell (aka Allen-Bradley) seems to be more popular in the US market, but Siemens has a larger international customer base. A cursory Google search will reveal that there is no lack of debate among automation professionals over which one is preferred. On the higher end of their PLC lines, the programming environments to use are: Siemens - Step 7 Simatic Manager for S7-300 and 400 level ...

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Object Oriented Programming in Siemens and Allen Bradley PLCs
Jon Carson

Object Oriented Programming in Siemens and Allen Bradley PLCs

Since their conception PLC programs have been founded on simple programs. RLL (Relay Ladder Logic) and IL (Instruction List) commands have dominated PLC programs since PLCs first came to market in the 1970s. However in the past few years automation requirements have grown more complex and demanding. This has in turn led to PLC manufacturers beginning to include some higher level programming concepts in their software packages. What exactly have they added? And what does it mean for your manufact...

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PLC Analog IO Troubleshooting Tips
Nick Shea

PLC Analog IO Troubleshooting Tips

When commissioning or troubleshooting PLC inputs and outputs (IO), the analog signals are often the most difficult. First, analog IO almost always has to be scaled to convert the raw signal to useful process values. Also, there are many wiring and external device (sensor/actuator) configurations. Here are some simple guidelines for troubleshooting and working with Analog IO. Although these guidelines are intended to help you think about the process of troubleshooting, this process will surely...

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Remote Machine Monitoring–Connecting to a Modbus Network with Java and Jamod
Jon Carson

Remote Machine Monitoring–Connecting to a Modbus Network with Java and Jamod

For a recent project, I had an interesting challenge. It involved a (relatively) simple control system, with an Allen Bradley MicroLogix PLC, and 30 or so inputs and outputs. The challenge was that the customer wanted to be able to access (and potentially control) live machine data from anywhere on their network, while buying as little hardware or software as possible. After a bit of research I came up with the following solution: The only entryway to the data that was available with no a...

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