How does IO-Link work?

Answers

IO-Link is based on the well-known 3-wire connection for a digital switching signal, in which the switching signal is output as a serial telegram.

Top answer

In addition to the first answer, one can also say that additional information in the form of a serial protocol can be exchanged between the I/O level and the field device.

There are four modes of communication: IO-Link, DI, DQ and Deactivated. IO-Link configures the port for bidirectional communication, DI mode configures it as input, DQ configures it as output, and deactivated only deactivates the port.

The IO-Link master sends an electrical impulse to move the IO-Link device from serial input / output (SIO) state to the digital communication interface state. Master IO-Link exchanges information frames with an IO-Link device.

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