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Consider the General Notes on the Information in the Pepperl+Fuchs Product Catalogs
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Copyright Pepperl+Fuchs
Issue date:16.08.2012
Sensor Interfaces
Many sensors from Pepperl+Fuchs have a digital inter-
face on its own or in addition to binary or analog outputs.
Sensors with RS232 interface
The RS232 interface enables communication with the
interface during operation. However, this interface is
primarily designed for parameterizing extensive sensor
functions. Many of our ultrasonic sensors are fitted with
this type of interface.
Sensors with USB interface
Generally, what applies to the RS232 interface also ap-
plies to the USB interface. It is essentially designed for
parameterizing extensive sensor functions.
Sensors with a parallel interface
The process value is issued by the sensor via parallel
data lines. A separate line is required for each bit of the
data word.
Pepperl+Fuchs supplies ultrasonic sensors, optical data
couplers, and rotary encoders with a parallel interface.
Sensors with SSI interface
The SSI interface (Synchronous Serial Interface) is a uni-
directional interface for the rapid transfer of process data
from the sensor to the control unit. The telegram length is
always 25 bits.
Sensors with SSI interface are included in:
•
Absolute rotary encoders
•
Data Matrix positioning systems PCV
•
Position encoding systemWCS
•
Laser distance measurement devices
Sensors with IO-Link
IO-Link is a point-to-point com-
munication system.
Sensors with IO-Link are fully downward compatible with
binary sensors with a switching output. If no IO Link mas-
ter is connected to the sensor, the sensor operates in SIO
mode with a conventional switching output. An IO-Link
sensor can therefore be integrated into existing systems
without restriction.
If the sensor detects a connected IO-Link master when
it is switched on, it operates in IO-Link communication
mode.
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3
4
2
IO-Link
SIO
All the features of this modern interface technology are
available in communication mode:
•
Parameterizing the sensor functions
•
Reading out process data
•
Transferring diagnostics data
When using IO-Link, you also benefit from:
•
Reduction in the number of versions–one IO-Link
sensor replaces a number of sensors with different
end stages
•
Reduction in machine downtime due to differentiated
diagnostics
•
Calling up of diagnostic information during operation
as a means of preventative maintenance
•
Reduction in project planning and installation costs
thanks to a standardized interface
•
Simple three-core cable to connect all sensors
•
IO-Link master enables different sensor types–even
simple binary sensors–to be connected.
Bus-compatible sensors
AS-Interface sensors
These sensors are connected directly to the AS-Interface
bus. The communicative ability of these devices supports
enhanced functionality.
AS-Interface sensors are included in the following product
areas
•
Inductive sensors
•
Photoelectric sensors
•
Rotary encoders.
Binary standard sensors can be connected to AS-Inter-
face via AS-Interface modules.
Additional bus systems and networks
Sensor products with extensive features and high data
transmission volumes in particular are fitted with bus
and network-compatible communication interfaces.
Pepperl+Fuchs offers sensor products for all standard
field bus systems.
Sensors and Systems
Introduction
