Usr'-Led - WAGO 750-872/020-000 Manual

116 • Fieldbus Controller
Fieldbus Controller 750-872/020-000
Fault code 11: "Gateway-/Mailbox I/O module fault"
Fault argument
* The number of blink pulses (n) indicates the position of the I/O module. I/O modules
without data are not counted (e.g. supply module without diagnosis)
Example: The 13th I/O module has been removed.
1.
2.
3.
3.1.11.3

'USR'-LED

The state of the 'USR' LED is programmable with WAGO-I/O-PRO CAA.
Functions in the program library "Visual.lib" can be used to control the LED
state. One of the many possible uses of this LED is to indicate the
RUN/STOP state of your controller.
Fault description
1
Maximum number of Gateway
modules exceeded
2
Maximum size of Mailbox
exceeded
3
Maximum size of process image
exceeded due to the put Gateway
modules
The I/O-LED starts the fault display with the first blink sequence (approx. 10 Hz).
The second blink phase (approx. 1 Hz) follows the first pause. The I/O-LED blinks
four times and thus signals the fault code 4 (internal bus data fault).
The third blink sequence follows the second pause. The I/O-LED blinks twelve times.
The fault argument 12 means that the internal bus is interrupted after the 12
module.
Trouble shooting
Turn off the power supply of the
node, reduce number of Gateway
modules and turn the power supply
on again.
Reduce the Mailbox size.
Reduce the data width of the
Gateway modules.
th
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