For the BMX NOE 01x0 and BMX P34 20x0 CPUs, the static bandwidth monitoring feature shows the approximate load as a percentage of the maximum available. Dynamic monitoring tracks certain counters to display the value of the load at the time of monitoring.

Configuration choices have an impact on the module load. The static bandwidth monitoring feature reports the approximate load as a percentage of the maximum available. For example, each I/O Scanner entry and subscription variable adds to the load, as do Modbus messaging function blocks. However, it is not possible to predict how often the Modbus messaging will run.

Estimating Traffic

To estimate network traffic, enter:

Network Environment Choice

For the BMX P34 20x0 CPUs, choose among three network environments for network polling:

Be aware that an increase in the number of polled messages increases the load on the CPU module, which may be evident in a slower scan time.

Elsewhere in this guide is an illustration of the bandwidth debugging window.