Highest amplitude marked with black outlineFigure 5-8:
How noise affects the fieldbus segment
The fieldbus segment can function properly with large amounts of low-frequency noise,
small amounts of in-band noise, or moderate amounts of high-frequency noise. In-band
noise is most likely to directly impact fieldbus communications. Bursts of in-band noise can
cause the fieldbus network to slow down due to the messages being resent multiple times.
Devices may also disconnect from the network if the in-band noise becomes too high/
frequent.
High-frequency noise seldom impacts fieldbus communications, but it may cause
measurement errors or the device may restart.
Related information
Troubleshooting Fieldbus Diagnostics
Fieldbus Diagnostics application
164 User Guide