Introduction to the ControlLogix FOR Instruction The ControlLogix FOR Instruction allows us to execute a routine for a specific number of times. To understand how a FOR loop works, let’s go back and look at some examples of BASIC from 1975. In this example, we will print the value of Read More »
Introduction to the ControlLogix Average Instruction (AVE) The ControlLogix Average Instruction (AVE) will find the average of a file. The file will simply be a group of numeric tags within an array. For example, we can use the AVE instruction to smooth out a noisy process variable to find the Read More »
Introduction to Kenbak-1 Indirect Addressing Kenbak-1 Indirect Addressing allows us to point to a variable memory location which contains the operand. This is useful for instructions such as LDA, and STA, etc. We don’t always want to reference the same memory location. Recall that in our last post, we create Read More »
Introduction to Logging Switch Changes in ControlLogix Today, we’ll be Logging Switch Changes in ControlLogix. Basically, we are creating a “black box”. This procedure works for any WORD in the ControlLogix processor. For example, we can also log alarms and faults. Later on, you can go back and see a Read More »
Introduction to ControlLogix Level 2 Training ControlLogix Level 2 Training is for those who have completed Level 1 (Maintenance and Troubleshooting). This includes troubleshooting data across PLC systems, Indirect Addressing, Function Blocks, and PID. You will also learn how to navigate Add-On instructions. ControlLogix Level 1 Review Typically, we’ll start Read More »
Introduction to ControlLogix Indirect Addressing ControlLogix Indirect Addressing allows you to have a variable address. This is an address that changes on the fly. Imagine a tank farm with 28 tanks. We would have the exact same logic for each tank, but a different address to access Read More »
