Specifications

Sensors
Sensor communications interface
www.digikey.com/maxim-industrial 85
A sensor communicates its sensed
information with analog or digital
techniques. Analog techniques are
based on voltage or current loops.
Digital information is communicated
with CAN, CompoNe, IO-Link®,
RS-485, and other data interfaces.
Binary sensors only transmit single-bit
information. Typically, the presence
or absence of an object is detected
and communicated with a logic level.
Also, when an object like a piston in
a valve reaches a predefined critical
distance, the sensor detects and
communicates this to the program-
mable-logic-controller (PLC) system
through a binary interface.
Sensor interfaces have to be robust
against all forms of mishandling and
EMI, since the industrial environ-
ments are harsh.
Sensor communications interface
www.maxim-ic.com/sensor