System for measuring the load in an elevator system having an elevator cabin, an energy supply system and a drive machine, the drive machine being designed to move the elevator cabin along a shaft, the energy supply system being connected to a mains connection via electrical conductors, and the drive machine being connected to the energy supply system via electrical conductors, - the system comprising a first sensor system (130, 131) for measuring a power characteristic value and the power characteristic value being indicative of the power of the drive machine, and the elevator system having an elevator control, characterized in that - the system comprises a second sensor system (140, 141, 142, 143) for measuring a movement direction characteristic value of the elevator cabin, and the movement direction characteristic value is indicative of the movement direction of the elevator cabin, and - the system comprises a logic unit, the logic unit being configured to calculate a load of the elevator cabin from the measured power and movement direction characteristic values, the logic unit forming a unit which is functionally separate from the elevator control, which unit does not detect any operational status information from the elevator control. the drive machine being designed to move the elevator cabin along a shaft, the energy supply system being connected to a mains connection via electrical conductors, and the drive machine being connected to the energy supply system via electrical conductors, - the system comprising a first sensor system (130, 131) for measuring a power characteristic value and the power characteristic value being indicative of the power of the drive machine, and the elevator system having an elevator control, characterized in that - the system comprises a second sensor system (140, 141, 142, 143) for measuring a movement direction characteristic value of the elevator cabin, and the movement direction characteristic value is indicative of the movement direction of the elevator cabin, and - the system comprises a logic unit, the logic unit being configured to calculate a load of the elevator cabin from the measured power and movement direction characteristic values, the logic unit forming a unit which is functionally separate from the elevator control, which unit does not detect any operational status information from the elevator control. - the system comprising a first sensor system (130, 131) for measuring a power characteristic value and the power characteristic value being indicative of the power of the drive machine, and the elevator system having an elevator control, characterized in that - the system comprises a second sensor system (140, 141, 142, 143) for measuring a movement direction characteristic value of the elevator cabin, and the movement direction characteristic value is indicative of the movement direction of the elevator cabin, and - the system comprises a logic unit, the logic unit being configured to calculate a load of the elevator cabin from the measured power and movement direction characteristic values, the logic unit forming a unit which is functionally separate from the elevator control, which unit does not detect any operational status information from the elevator control.