Variable names are alphanumeric but must start with a letter. The length of a variable name is limited to thirty-two characters for non-SAS data set variables Model variables are declared by VAR, ...

In part one of this series, we looked at the PLC’s internal architecture, briefly discussed Ladder Logic programming, Human-Machine Interfaces, advantages of the PLC’s ability to react consistently ...

New developers can easily become overwhelmed or even confused by the vast number of terms and definitions associated with their profession. In particular, one of the biggest challenges that software ...

Replace confusing cell references with global constants, local variables, and reusable custom functions.