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Fieldbus ECO-Coupler 750-343 • 97

LED Signaling

WAGO-I/O-SYSTEM 750

PROFIBUS

3.1.10.2 Fieldbus Status

The upper four LED's signal the operating conditions of the PROFIBUS

communication.

LED Color Meaning

RUN green The RUN-LED indicates the correct power supply of the Fieldbus

Coupler.

BF red The BF-LED indicates that the communication functions via the

PROFIBUS.

DIA red The DIA-LED indicates an external diagnostics.

BUS red The BUS-LED signals a configuration fault.

RUN BF DIA BUS Meaning Remedy

off off off off No operating voltage to

the Coupler (status LED

of the Coupler supply

does not light up) or a

hardware fault is

present.

Check the voltage supply for

the bus coupler and replace the

bus coupler if necessary.

on on * off PROFIBUS interface

started, baud rate was

not yet recognized.

Check to see whether the

PROFIBUS is connected.

Check to see whether the baud

rate configuration on the

master is supported by the

coupler.

Replace the bus coupler

because there is a hardware

defect.

on blinks * off Baud rate recognized,

node not yet configured.

Check the configuration and

the slave addresses.

Load the configuration and

start the coupler by switching

the supply voltage off and on

again.

on blinks on blinks

cyclic

ally

Slave was incorrectly

configured.

Fault message via blink

code

Evaluate the blink code.

on off * off The Coupler is

exchanging data.

on * on * The Coupler signals an

existing diagnostics.

The data exchange is

functioning without any

problems so that you may

obtain diagnostic information,

for instance on a cable break in

an analog input terminal.

* Not relevant

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