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Programmable Hardware Manual (PHM)
© Tibbo Technology Inc.
Bus Probes are typically wired to a twisted pair cable, which distributes power and
carries RS485 "+" and "-" lines. All probes accept the supply voltage in the 4V to
15V range. This allows you to power them from 5V sources (for example, the 5V
output of the
), as well as standard 12V power supplies. Wide supply
voltage range also means that you can allow for a significant voltage drop along the
bus, i.e., use a bus cable of considerable length.
BP sensors are very compact (external dimensions only 40 x 36mm) and sport an
attractive look and feel. Each sensor has two mounting holes for attaching it to
walls and other surfaces.
Tibbo supplies two TPS2(G2)-compatible Tibbo BASIC applications for convenient
setup and testing of Bus Probes (see
and
).
Connectors and Controls
Note 1: When using an RS485 bus of substantial length,
do not forget to use 120
Ohm termination resistors
on both ends of the bus.