WAGO-I/O-SYSTEM 750
Diagnostics 117
750-375 PROFINET IO advanced Fieldbus Coupler
Manual
Version 1.1.0
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10.1.2
Evaluating the Node Status
The I/O LED indicates the operating status of communication between the
fieldbus coupler and I/O modules.
Table 57: Node status diagnostics – Solution in event of error
LED Status Explanation
Solution
I/O
green
Data cycle on the internal data bus.
Normal operating conditions.
orange
permanent
The boot loader is copying the device
firmware from the flash memory to the
working memory of the fieldbus
coupler.
-
red
permanent
Fieldbus coupler has a hardware defect
Replace the fieldbus coupler.
red
flashing
Flashing at approx. 10 Hz points to
initialization of the internal data bus or
to a general internal data bus error.
Note the following blinking sequence.
red
cyclical
flashing
Up to three successive blinking
sequences indicate internal data bus
errors. There are short intervals between
the sequences.
Evaluate the blinking sequences based
on the following blink code table. The
blinking indicates an error message
comprised of an error code and error
argument.
OFF
No data cycle on the internal data bus.
The fieldbus coupler supply is off.
After switching on the power supply, the boot loader copies the device firmware
to the working memory, the I/O LED lights up orange.
The device firmware then starts and initializes the internal data bus. This is
indicated by red flashing at 10 Hz for 1-2 seconds.
After starting up without any errors, the I/O LED lights up green.
In the event of error, the I/O LED flashes red.
The flash codes are used to indicate detailed error messages. An error is indicated
by up to 3 cyclical flash sequences.
After eliminating the error, restart the fieldbus node by switching the fieldbus
coupler power supply off and on again.
