Intdoduction to ControlLogix GSV Command (WallClockTime) In this post, we will discuss the ControlLogix GSV Command (WallClockTime). Earlier processors, such as the SLC-500 and PLC-5 had a data file dedicated to system status (S2). In the S2 file, you could find the data table addresses of system information such as the Read More »
Introduction to ControlLogix Compare Instructions ControlLogix Compare Instructions are generally used with analog values to determine if a tag is above, below, or within a preset range. Examples of where a compare instruction might be used is if a tank level exceeds a certain preset. Also, if a sump Read More »
Introduction to ControlLogix Analog Discrete (digital) inputs and outputs are signals that are on or off. There is no middle state to discrete. These were good for switches, indicator lights, or motor starters, but if we want to measure a variable signal, we need an analog module. Read More »
