What Is a Manufacturing Execution System (MES) and Do SMBs Need One?
Ask a plant manager what is happening on the production floor right now, and you will get one of two answers. The first is a confident, specific response: which work centers are running, which jobs are ahead or behind schedule, what the current defect rate is on line three, and how much of today's planned output has been completed. The second is a slower, less certain answer that involves checking a whiteboard, calling a supervisor, or waiting for the end-of-shift report. The difference between those two answers, the difference between real-time visibility and informed guessing, is largely a function of whether the operation has a Manufacturing Execution System. This article explains what MES actually is, how it works, how it differs from ERP, which manufacturers genuinely need one, and the honest answer to the question small and mid-sized manufacturers most often ask: do we actually need a separate MES, or can our ERP handle this? What Is a Manufacturing Execution System? A M...