The ability to review a process in retrospect is the function of historical data collection. Done properly, it provides valuable insights that can be used to fine-tune process parameters, justify process improvements, troubleshoot equipment and identify cost savings. Historical data collection can often be accomplished with a single, local HMI (Human Machine Interface) or through a database server residing either locally or remotely at a corporate headquarters.

Wunderlich–Malec’s project methodology is designed to produce relevant and meaningful historical data collection, which includes the following:

• Imported I/O and tag database
• Standard “off-the-shelf” hardware and software
• Documented data collection requirements
• Data storage hardware requirements
• Trend analysis requirements
• Reporting requirements
• Process operating parameters
• Instrumentation specifications