ERG (short for Ergometer) mode is a mode under which the "intelligent coach" automatically sets up resistance for training for you.
Remember that the ERG mode must be used together with a smart bike trainer and a compatible bike training app or a bike computer.
When cycling in ERG mode, you can fully focus on the workout itself and leave the work of resistance adjustment entirely to your cycling app. Your smart bike trainer will allow for a personally tailored workout that achieves a constant target power by making small adjustments to the resistance. If you do workout with a bike trainer that supports ERG mode, you can enable the ERG mode. Onelap allows you to enable ERG mode in training and cycling events.