Introduction to ControlLogix over the Internet In this section, I’ll show you how easy it is to connect to a ControlLogix system over the Internet without proper security. Undoubtedly, using this procedure will cause a severe security threat. The purpose of this to show how easy a simple change in Read More »
Introduction to ControlFlash Plus ControlFlash Plus is a firmware update tool. Basically the firmware is the operating system for a module. Each of your ControlLogix modules have firmware. Your controllogix project will usually require a minimum firmware revision for each module. With this in mind, when you replace a module, Read More »
Introduction to the PlantPAx 4 Digital Output Instruction We use the PlantPAx 4 Digital Output instruction (P_DOut) to control outputs. The P_Dout instruction has several advantages over a standard output. To begin with, the P_Dout instruction allows you to add a standard object to an HMI display for the operator. Read More »
Introduction to getting started with PlantPAx 4 When we are getting started with PlantPAx 4. we will need to import pieces of the PlantPAx library into our project. Generally, we’ll import the add-on instructions into the Studio 5000 project. Equally important, we will need to import certain components into the Read More »
Introduction to PlantPAx Process Library 4. The PlantPAx Process Library 4 is free to download from Rockwell Software’s Website. PlantPAx is a DCS (Distributed Control System) that we use on Allen Bradley ControlLogix Processors. You will also use the FactoryTalk View HMI software to get the most out of the Read More »
Introduction to MCR Zones MCR Zones are difficult for some people to understand. MCR stands for “Master Control Reset”. In this post, I’ll emphasize the common misconceptions about MCR Zones, and show examples different MCR States. It’s important to realize that MCR Zones do not necessarily shut off all outputs Read More »
Introduction of TON and TOF Differences There are several TON and TOF Differences that you need to be aware of. In summary, the TON delays the DN bit from turning ON. The TOF Instruction delays the DN Bit from shutting off. The TON Instruction By far, the TON instruction is Read More »
Introduction to Seal and Latch Differences Today, we are going to discuss the Seal and Latch differences in ladder logic. Basically, they do something very similar. When one condition goes true, the output comes on. Likewise, when a different condition changes, the output shuts off. There are some differences, however, Read More »
Introduction to Cascading Counters By cascading counters, you can virtually have a limitless number of counts using CTU instructions. With the older 16 bit processors, the maximum count was 32767 before the counter overflowed. Using 32 bit processors, however, this maximum count for a signed DINT is 2147483647 before it Read More »
Introduction to Troubleshooting with Add-On Instructions Today, we’ll look at a method for troubleshooting with Add-On Instructions. Add-On instructions make life easier for both the programmer, and the troubleshooter. However, it’s important to understand how add-on instructions work, and why we need them. In the older processors, the programmer wrote Read More »
