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How it works Archive
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How to troubleshoot problems with Devicenet
Posted on August 31, 2011 | 5 CommentsHave you ever had problem with Allen Bradley DeviceNet? I gathered together some info which helped me with troubleshooting this network including fault codes and voltage measurement of devicenet cables. Most of... -
Troubleshooting PLC and SCADA network – TCP/IP connectivity with Windows XP
Posted on August 13, 2011 | 2 CommentsMost of industrial networks use Ethernet network and TCP/IP protocol for communication between SCADA and PLC, HMI and PLC, DCS ( distributed control system) and RTU ( remote terminal units... -
How to scale analog inputs and outputs – PLC scaling examples
Posted on August 11, 2011 | 4 CommentsAnalog I/O whether it is 4-20mA or 0-10 V are connected to pressure transducers, level probes and other analog devices. As PLC programmer or control engineer you will need to... -
How to create Add-on Instructions in RsLogix 5000
Posted on August 10, 2011 | 1 CommentNew Allen Bradley programmers often ask what are Add-On Instructions? Rockwell Automation in RSLogix™ 5000 v.16 introduced the concept of reusable code objects called Add-On Instructions. These instructions allow you to encapsulate your most... -
PLC Programming languages – Siemens STL Statement List
Posted on July 28, 2011 | 3 CommentsThis is a second article about PLC programming languages. In our first post I explained how Allen Bradley Structured text looks like, basic instruction and how to write the code... -
Level measurement – methods and sensors
Posted on July 20, 2011 | No CommentsThere are many types of level-measuring instruments, identifying the right one for your application can be very difficult. In recent years, technologies that capitalized on microprocessor developments have stood out... -
What is Fieldbus – different types explained
Posted on July 17, 2011 | 1 CommentFieldbus Explained – Find out everything about Profibus, DeviceNet and others What is Fieldbus? Have you heard about Devicenet or Profibus? Fieldbus basically is an industrial automation network system for... -
Types of Encoders used in Automation
Posted on June 7, 2011 | 1 CommentThere are different types of encoders used in industrial automation. All depends on application we are going to use encoder for. We can divide them as: 1) Rotary Encoders 2)... -
How to troubleshoot electrical installations and control systems
Posted on May 8, 2011 | No CommentsIt is very important that problems must be solved in the least amount of time. Engineer needs a right approach and knowledge to fix any electrical installations of control systems of... -
Importance of documentation in PLC programming process
Posted on April 21, 2011 | 1 CommentPLC programming is important for a well-run application program, but all that work is lost without adequate system documentation. Without documentation, system activities, such as changes, installation and maintenance, are difficult...