Evaluating Power Supply Status; Error Response; Fieldbus Failure; Table 68: Power Supply Status Diagnostics - Solution In Event Of Error - WAGO -I/O-SYSTEM 750 Manual

124 Diagnostics
10.1.3

Evaluating Power Supply Status

The power supply unit of the device has two green LEDs that indicate the status
of the power supplies.
LED "A" indicates the 24 V supply of the coupler.
LED "B" or "C" reports the power available on the power jumper contacts for
field side power.
Table 68: Power supply status diagnostics – solution in event of error
LED Status
A
Green
Off
B or C
Green
Off
Pos : 70.20 /Serie 750 ( WAGO-I/O-SYST EM)/Diagnos e/F eldbus koppler/-c ontroll er/F ehl er ver halten, F el dbus aus fall ( 750- 0375, 377) @ 15\mod_1369401981038_21.doc x @ 120430 @ 23 @ 1
10.2

Error Response

10.2.1

Fieldbus Failure

A fieldbus failure is indicated if the IOC is switched off or the fieldbus cable is
interrupted. An error in the IOC can also lead to a fieldbus failure.
A fieldbus failure is displayed on the "BF" LED either red flashing or red
continuous.
More information on the "BF" LED display!
You can get display breakdown of the "BF" LED in the chapter "Evaluating the
Fieldbus Status" in the table "Fieldbus diagnostics – solution in event of error".
If PROFINET IO data exchange fails, e.g. physical connection to the IO controller
terminated or in the "STOP" state of the respective control, the fieldbus coupler
outputs the configured substitute values to the respective I/O modules depending
on the configured substitute value strategy to the values shown in the table below.
The same behavior is applied if the IOC sets the provider states of respective
submodules to 'BAD'. On start-up of the node process values corresponding to
output values zero are output.
Meaning
Operating voltage for the system is
available.
No power is available for the system
The operating voltage for power jumper
contacts is available.
No operating voltage is available for the
power jumper contacts.
750-375 PROFINET IO advanced Fieldbus Coupler
Solution
-
Check the power supply for the system
(24 V and 0 V).
-
Check the power supply for the power
jumper contacts (24 V and 0 V).
WAGO-I/O-SYSTEM 750
Manual
Version 1.1.0