Обзор

Using IO-Link technology it is also possible to connect standard sensors to IO-Link masters. However, connecting standard sensors directly to the IO-Link master does not exploit the full potential of IO-Link. The solution lies in the technology of the IO-Link modules. The use of this technology represents a more attractive solution in terms of cost than the direct connection of sensors/actuators.

IO-Link I/O modules are a useful addition to ET200S distributed peripherals.

The technology of the IO-Link I/O modules expands IO-Link from a pure point-to-point wiring method in the direction of distributed structures. It must be noted however that the cable length of an IO-Link connection restricts the distance of an IO-Link module from the master to a maximum of 20 m.

The use of passive distributors with accordingly complex and error-prone wiring is no longer necessary.

Transmission of parameter and diagnostic signals

With IO-Link I/O modules it is possible in addition to transmit parameter and diagnostic signals. This enables for example the inputs of modules to be parameterized as NC contacts or NO contacts through IO-Link. An overload or short-circuit in the sensor supply is signaled to the control system through the IO-Link master.

M8 and M12 terminals

M8 and M12 terminals are available for connecting the sensors. Connection to the IO-Link master is made using a standard M12 connecting cable.

Область применения

IO-Link I/O modules are used in particular where passive distributors were used up to now for the connection of binary sensors.

Application example: Replacement of passive distributors through the use of IO-Link I/O modules

Former technology with passive distributors.

Technology with IO-Link I/O modules.

Особенности

The use of IO-Link I/O modules offers the following advantages:

• Economical use of innovative IO-Link technology also for binary sensors/actuators
• Optimum use of all ports of the IO-Link master
• Connection of several binary sensors/actuators to one port of the IO-Link master, hence low-cost connection of also binary sensors/actuators to the control system through IO-Link
• Use of parameters also for binary sensors (e.g. NC contacts, NO contacts and input delay can be parameterized)
• Reduction of cabling and hence less risk of wiring errors by dispensing with passive distributors
• Expansion toward distributed structures using pure point-to-point wiring
• Easy and elegant integration of sensors/actuators within a radius of 20 m around an ET200S station
• Possibility of transmitting parameter and diagnostic signals (e.g. sensor supply overload)
• Can also be used in harsh conditions thanks to the very compact design and degree of protection IP67