Introduction to the SLC-500 FIFO Find Moving Average We’ll use the SLC 500 FIFO to find the Moving Average of a value. The SLC-500 FIFO (First In – First Out) can be used to store data that needs to be retrieved later. For example: We can read a product code Read More »
Introduction to SLC-500 DDE/OPC (Dynamic Data Exchange) There are many reasons to link data from a processor to a spreadsheet using RSLinx for SLC-500 DDE/OPC. You can list all conditions that are required to be met prior to equipment starting. If you equipment does not start, simply look down the Read More »
Introduction to Counters in the SLC-500 processor Counters in the SLC-500 work in a similar way to some external hardware counters. Each time the rung goes true, the counter is activated, and the accumulator value will change by 1 count. There are two types of counters: the Up Counter (CTU) Read More »
Introduction to timers in the SLC-500 Processor. Timers in the SLC-500 processor are very similar to timers in other AB Processors. There are 3 types of timers: On Delay (TON), Off Delay (TOF) and the Retentive Timer (RTO). The On Delay Timer (TON) delays the Done bit (DN) from turning Read More »
Introduction to Trapping in the SLC-500 In this document, I will guide you through my method of trapping in the SLC-500. We will use this tool to find intermittent problems. For example: a guard door, pressure switch, thermal switch, or other inputs could shut down your process. Be aware that Read More »
Introduction to the SLC-500 Histogram We use the SLC-500 Histogram to track infrequent bits (such as Intermittent problems) and bits that change quickly in the processor. A common use for the histogram is to find intermittent problems. In this post, I will guide you through the procedure for setting up Read More »
