Method for operating an anesthetic system

The method (2) for operating an anesthesia system i. an anesthesia device (4), ii. one on the anesthesia device (4) can be detachably fastened module (6) having an anesthetic agent container (8), and iii. a the anesthesia machine (4) or the module (6) associated with the metering unit (10) which is designed for mixing anesthetic of the anesthetic agent container (8) into a gas stream, iv. wherein said anesthetic agent container (8) 1 received in an operating state for providing an anesthetic from the container (8) anesthetic and 2. in a disengagement state for releasing the module (6) from anesthesia device (4) and / or for filling is formed with anesthetics, v. a locking device (16) for locking a connection between the module (6) and the anesthesia device (4) for preventing uncoupling of the module (6) from the anesthesia device (4), and for unlocking a connection between the module (6) and the anesthesia device (4) for allowing decoupling of the module (6) from the anesthesia device (4), and vi. a sensor (48, 56) for detecting a condition relevant measure of the anesthetic agent container (8), characterized by the steps of: vii. Detecting for the anesthetic agent container (8) state relevant measured variable by means of the sensor (48, 56), viii. Determining the operating state or the disconnection state of the anesthetic agent container (8) by means of the measured variable, ix. Disabling communication between the module (6) and the anesthesia device (4) when the anesthetic agent container (8) is in the operating state, and x. Releasing the connection between the module (6) and the anesthesia device (4) when the anesthetic agent container (8) in the disengagement state.