Usually, iba bus monitors dispose of two modes of operation: In addition to the active mode, in that the bus monitor receives values sent directly from the control, the so called Sniffer modes can be used for a variety of purposes.

Here, the values communicated on the bus are “listened to” and acquired as signals. Thus, there is no additional load on the automation and no changes in the configuration have to be made. Moreover, an iba bus monitor offers various diagnostic information about the status of the field bus, so that potential bus failures can be detected rapidly.