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IO-Link is a new, innovative and standardized communication module for sensors and actuators - defined by the Profibus User Organization (PNO). IO-Link technology is based on the point-to-point connection of sensors and actuators to the control system. As such it is not a bus system but constitutes a considerable upgrade of the classic point-to-point connection. Extensive parameter and diagnostics data are transmitted in addition to the cyclic operating data for the connected sensor/actuators. The connection technology used is based on the same 3-wire connecting cables customary in today's standard sensor systems.

Components of an IO-Link system:

Only 2 components are required to use IO-Link:

  • IO-Link master
  • IO-Link device (e.g. IO-Link sensor/actuator, IO-Link I/O module)
Compatibility of IO-Link

IO-Link guarantees compatibility between IO-Link-capable modules and standard modules as follows:

  • IO-Link sensors/actuators can be operated on IO-Link modules (master) as well as on standard I/O modules.
  • IO-Link sensors/actuators as well as today's standard sensors/actuators can be used on IO-Link modules (masters).
  • If conventional components are used in the IO-Link system, then of course only the standard functions are available at this point.
Expansion through IO-Link I/O modules

IO-Link compatibility also permits connection of standard sensors/actuators, i.e. conventional sensors/actuators can also be connected to IO-Link. This is done particularly economically with IO-Link I/O modules which enable several sensors/actuators to be connected to the control system simultaneously over one cable.

Analog signals

Another advantage of IO-Link technology is that analog signals are digitized already in the IO-Link sensor itself and are digitally transmitted by the IO-Link communication. As the result, faults are prevented and there is no extra cost for cable shielding.

Integration in STEP7

Integration of the device configuration in the STEP7 environment

  • Easy and quick engineering
  • Consistent data storage
  • Speedy locating and rectifying of faults

Productivity is thus increased throughout all plant lifecycle phases - from configuration and start-up to operation. Thanks to the Siemens IO-Link solution, even sensors and actuators below fieldbus level can be integrated to optimum effect with all their capabilities in the Totally Integrated Automation (TIA) environment.

Каталог оборудования

Приводная техника

Техника автоматизации

Коммуникации и сети

Низковольтная коммутационная техника

Промышленные аппараты управления SIRIUS



Среда передачи

Системные компоненты и аксессуары



Коммутационные аппараты

Аппаратура защиты

Потребительские отпайки

Функциональные, коммутирующие реле и преобразователи

Устройства обнаружения

Устройства управления и индикации

Трансформаторы и блоки питания

Рамочные клеммы ALPHA FIX

Планирование и конфигурирование для SIRIUS

Заказные продукты и решения

Низковольтное энергораспределение



Инжиниринговое программное обеспечение

Электроустановочная техника

Специализированные сенсоры

Блоки питания

Технология безопасности

Системные решения и продукты для отраслей


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