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Programmable Field Bus Controller 750-833
LED Signaling
Fault
Argument
Fault Code 4: Physical Internal Bus Fault
Fault Code 5: Initialization Fault
Fault Code 6: not used
Fault Code 7: not used
Fault Code 8: not used
Fault Description
-
Data fault on internal bus
or
internal bus interruption
on coupler.
n*
Internal bus interrupted
after I/O module n with
process data.
n*
Register communication
fault during internal bus
initialization.
-
-
-
-
-
-
Remedy
Switch off the supply voltage of the node. Place
an I/O module with process data behind the
coupler and note the error argument after the
power supply is turned on. If none error argument
is given by the I/O LED, replace the coupler.
Otherwise detect faulty I/O module as follows:
turn off the power supply. Place the end module
in the middle of the field bus node. Turn the
power supply on again.
- If the LED is still blinking, turn off the power
supply and place the end module in the middle of
the first half of the node (towards the coupler).
- If the LED doesn't blink, turn off the power
supply and place the end module in the middle of
the second half of the node (away from the
coupler). Turn the power supply on again. Repeat
this procedure until the faulty I/O module is
detected. Replace the faulty I/O module.
If there is only one module on the coupler and the
LED is blinking, either this module or the coupler
is defective. Replace the defective component.
Switch off the supply voltage of the node.
th
Replace the (n+1)
module with process data and
switch on the supply voltage again.
Switch off the supply voltage of the node.
th
Replace the n
module with process data and
switch on the supply voltage again.
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-
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WAGO-I/O-SYSTEM 750
Bus System
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