The isNet FFMon module extends the Ethernet module isNet Lite to operate as a diagnosis and protocol monitor for FOUNDATION Fieldbus. The module helps to detect and investigate sporadic problems in the data transmission in an FF network.
The FF-monitor module provides two independent channels, which are connected via screw terminals directly to the FOUNDATION Fieldbus H1 lines. The module works completely passive, no telegrams will be sent to the H1 lines of the fieldbus. Instead, the status of all network devices is detected and then presented on a PC. In this illustration, the bus state for each of the individual layers of the OSI reference model is determined separately and can be selected individually.
The functionality of the isNet FFMon module includes a protocol monitor to record FF telegram frames, an integrated oscilloscope for analysis of the physical signal quality and an extensive evaluation of statistical data on the FF H1 bus, such as Error counters or average time intervals. The long-time recording allows autonomous operation for an extended period, even if no PC is connected to the Netlite. The log file is saved directly on an MMC memory card and can be downloaded later to a PC.