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7.1

Device Start-Up and Initialization

After a restart the fieldbus coupler does several hardware tests, e.g. the check of

memory components.

Successfully passed those tests it initializes the internal communication system K-

Bus to identify the arranged I/O modules and to exchange information with them.

This phase is indicated by the I/O LED, which flashes red at 10 Hz. Subsequent to

the successful K-Bus initialization the I/O-LED changes to green on-state.

The fieldbus coupler then switches to the "Fieldbus Start" state in which it waits

for the connection with the higher-level control system (IO controller) as an IO

device.

If an error occurs during start-up, the I/O LED flashes red and a blink code

indicates the respective error message.

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Figure 37: Fieldbus Coupler Operating System

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More information about the LED Signaling

Read the detailed description for the evaluation of the displayed LED state in the

section "Diagnostics" > ... > "LED Signaling".

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WAGO-I/O-System 750

750-370 PROFINET IO Fieldbus Coupler

Manual

Version 2.0.0

Table of Contents