© Siemens AG 2007 Totally integrated in TIA IQ-Link is a concept for the intelligent integration of sensors in automation systems. Just like all products and systems incor-porated in Totally Integrated Automation, IQ-Link devices also
feature the same properties with respect to communications capability, data management and configuration/program-ming. This provides advantages in every aspect, and not just
enormous savings potential for engineering. For the first time, plant-wide communication down to the sensor level can be implemented not just extremely easily, but highly profitably as well. SIMATIC PXS sonar proximity switches Sonar proximity switches can be used as non-contact proxim-ity switches in many fields of automation. These devices can be used whenever distances through air have to be evaluated, because they not only detect objects, but can also output and evaluate the absolute distance between the Sonar proximity switch and the object. Changing environmental conditions (e.g. temperature variations) are compensated during evaluation of the measurement. SIMATIC PXO optical proximity switches The photoelectric proximity switches react to changes in the received quantity of light. The light beam emitted from the
emitter diode is interrupted or reflected by the object to be detected.Depending on the type of BERO, the interruption or reflection of the light beam is evaluated. SIMATIC PXI inductive proximity switches Inductive proximity switches are the low-cost solution for non-contact
detection of metal objects.Inductive proximity switches are extremely reliable with a very high repeat accuracy and long service life thanks to no-wear operation as well as their insensitivity to temperature,
noise, light and water. SIMATIC PXC capacitive proximity switches Capacitive proximity switches are also non-contact sensors for measuring conducting and non-conducting materials in solid, powder or liquid state. 3