Introduction to the 1802 Membership Card Timer In this section, we’ll crate a scan based 1802 Membership Card Timer using BASIC3. The 1802 Membership card uses the COSMAC 1802 Processor. Since we are basing the timer on the scan rate, you may have to vary the delay loops to calibrate Read More »
Introduction to the COSMAC LED Display Timer For this post, I used the CDP1802 Microprocessor kit. The 1802 processor was on several space missions. This includes Gallileo craft which explored Jupiter. This kit has several nice features for learning purposes. It has an LED display, and you can add an Read More »
Introduction to the COSMAC 1802 LCD Timer In this section, we’ll build a COSMAC 1802 LCD Timer. I’m using the CDP1802 Microprocessor kit for this with an LCD display. The code will also display the value of the timer (up to 255) on the LED indicators. Basically, to run the Read More »
Introduction to ControlLogix Structured Text Timer In this post, we’ll cover the ControlLogix Structured Text Timer. ControlLogix supports 4 programming languages: Ladder, Structured Text, Function Blocks, and Sequential Flow Charts. Some vendors prefer structured text over ladder. One reason for this is that they can develop the program without a Read More »
Introduction to Numeric Input for a Timer In this section, we’ll discuss how to set up a Numeric Input for a Timer in ControlLogix. I’ll use FactoryTalk View ME. As you know, the time base for timers in ControlLogix is in Milliseconds. This is not very intuitive for an operator. Read More »
