Process and Device for verification of a Monitoring Function of a Bus System and the Bus System Current Status of the Technology The Invention relates to a process and a Device for verification of monitoring function of a Bus System, and the Bus System itself in accordance with the generic term of the Independent Claims, The interlinking or networking of Control Devices, Sensor Systems and Recording Systems with the help of a Communication System of a Bus System has vastly increased in the last few years in the design of modem automobiles or in the machine-building industry, particularly in the area of machine tool fabrication as well as in the automating sector. Through the distribution of functions among several control instruments, synergy effects could be achieved. In this context, one would speak of a distributed system. Communication between different Stations takes place more and more through a Bus and/or a Bus System. The Communication Traffic on the Bus System, Access and Receive mechanisms as well as error handling are regulated through a Protocol. CAN (Controller Area Network) has established itself as the Protocol in the automobile sector. This is an event-driven protocol, that means, protocol activities, such as the transmitting of a message, are triggered or initiated through the events, which have their origin outside of the Communication System. The clear access to the Communication System and/or Bus System is triggered through a priority-based Bit Arbitration. The prerequisite for this is that each message is allotted with an unambiguous priority. The CAN-Protocol is very flexible. Insertion of further nodes and messages is thus effortlessly possible, as long as free priorities are still available. An alternative extension or stage of such an event-driven spontaneous communication is the pure time-driven alternative. All communication activities on the Bus are strictly periodical. Protocol activities, such as transmitting of a message are triggered purely through the progression of a time valid for the entire Bus System. The access to the Medium is based on the allocation of time ranges and/or time slots in which a transmitter has exclusive transmission rights. Insertion of new nodes would then be possible, ff the corresponding time slots were made free in advance. This circumstance or state-of-affairs necessitates that the message sequence is already frozen before the commissioning, whereby a schedule is prepared, which must adequately meet the requirements of the messages with reference to Repetition rate, Redundance, Deadlines, etc. Besides the event-driven application and the purely time-driven application, also a time-driven CAN-Alternative, the so-called TTCAN (time triggered controller area network) is known. This' meets the requirements sketched above for time-driven Communication as well as the requirements for a certain amount of flexibility. The TTCAN fulfills these through the structuring of the Communication Round (basic cycle) in the so-called exclusive Time window and /or Time slot for periodic messages of specified participant in the Communication and in the so-called Arbitrating Time window or Time slot for spontaneous messages of several participants in the Communication. Besides the Bus System mentioned above, a multiplicity of Bus Systems and/or Communication Systems for interlinking of participants in distributed systems are known. For Communication systems and/or Bus systems, a series of possibilities are available to prevent or to solve access conflicts. In CAN, for instance, the Bitwise arbitration is adopted. This is very robust, but because of the Run-time phenomenon, the maximum transmission speed is limited by the very principle. Under the Time-driven Communication system, the access problems are solved through Attempt and Configuration. The conflicts are already prevented off-line through advance planning, The prerequisite however is a common understanding of the time, which has validity throughout the network. In these Systems, however, generally there is no possibility to process, in error cases, the access conflicts, because the access in itself could not be prevented. Therefore, it is customary to introduce the so-called Bus Guardian or Bus Monitor BG as an additional unit, which allows the physical access only in the configurated time slots. Thus, even in error cases, the access conflicts can be solved or prevented. As in the case of all monitoring systems, here also the problem of inherent monitoring capability of the Monitoring system presents itself. The important function of the Bus Guardian or Bus Monitor, mainly the physical prevention of the access, is never required in normal cases, and to this extent therefore the availability of this function is also not tested. From the point of view of the System, a monitoring of this function is however necessary, in order that one is not required to deal with dormant errors. In this respect, the DE 199 50 433 A 1 is known to be the state-of-the-art of technology. A procedure for monitoring this function is described therein. What is disadvantageous in the above referred to state-of-the-art of technology is however, that the Monitoring and/or verification of the Bus Guardian function happens in a time slot, which is almost always customarily used for message transmission and which, under the framework of verification cannot be used for the purpose. That means, within a regular Communication time, time which normally was visualized for transmitting the messages is consumed to the advantage of the Bus Guardian-Test, Thus, it is evident that the state-of-the-art of technology referred to is not in a position to deliver optimum results in all circumstances. Thus emerges the task to optimize the above mentioned situation and to circumvent the disadvantages arising from the state-of-the-art of technology. Advantages of the Invention The Invention is based on a process and a device for verification of a Monitoring function of a Bus System as well as a corresponding Bus system with at least one participant; in which: a first set of time slots are visualized, on which messages are carried, and a Communication cycle consisting of a number of first Time slots is created in such