Measure OEE correctly
Before connecting machines, agree on definitions: what counts as planned production time, which stops are planned and what each machine’s ideal rate is. OEE without shared definitions isn’t comparable.
Keep the list of stop reasons short and specific — eight to twelve reasons are enough. A long list makes operators always choose “other”.
Start with one bottleneck machine. OEE gains at the bottleneck add directly to the whole plant’s capacity, and the result is tangible for management.
Design the operator panel with the operators. Buttons must work with gloves, text must be readable from two metres and logging a stop should take no more than two taps. A slow panel produces incomplete data.
Before connecting IoT, run manual entry on the panel for a few weeks. That tests your definitions and stop reasons, so when automatic counting is connected only the data source changes, not the process.