Was the concordat of worms limited the emperor's power?

Yes, the Concordat of Worms in 1122 did limit the emperor's power by establishing a clear distinction between spiritual and temporal authority. It resolved the Investiture Controversy by allowing the Church to appoint bishops while granting the emperor the right to invest them with secular authority. This compromise diminished the emperor's influence over ecclesiastical appointments and reinforced the autonomy of the Church, ultimately leading to a more balanced relationship between the two powers.