Communications
All VibroSmart modules and devices
communicate using a system bus (SBUS), based
on Ethernet technology, that supports data
transfer rates of 100 Mbps at distances up to
100 m. The SBUS ensures the transfer of both nonreal-
time (standard) and real-time (time critical)
information between VibroSmart modules, and
supports communication with the host computer
running the VibroSight software.
VibroSmart modules can either be located sideby-
side (adjacent to each other) or separate
from one another. This flexibility allows the
functionality of the monitoring system to be
distributed depending on the size of and access
to the machinery being monitored. It also helps
reduce the expensive sensor cabling typically
required between sensors and monitoring
modules, by effectively replacing it with lower
cost Ethernet and power supply cabling.
VibroSmart modules that are located side-by-side
can communicate directly (no Ethernet cabling
required) using the sidebus connectors on the
terminal base that support both SBUS and
redundant power supply distribution. VibroSmart
modules that are mounted separate from one
another can communicate over standard and
redundant Ethernet networks of shielded twistedpair
Ethernet cable using the Ethernet connectors
on the terminal base. However, using these
Ethernet connectors does require that the power
supply is distributed separately.
Discrete signal interface (DSI) inputs, including the
module lock signal, and tachometer signals can
be connected directly to individual modules
(locally). Alternatively, to reduce external wiring,
these signals can be connected to a single
VibroSmart module and shared among modules
in the same measurement block using the SBUS.
