I/O Module Leds - GE VersaPoint IC220PBI002 User Manual

I/O Module LEDs

I/O modules have both diagnostic (1) and status (2) LEDs. All input/output module
LEDs are electrically located in the logic area.
Diagnostics LEDs on I/O Modules
The diagnostic indicators (red/green) indicate the status of the modules. A module
is operating normally if its diagnostic LED (D) is on and green. If an error is
detected, the LEDs immediately display the current status.
D (1) Green LED
ON:
Flashing:
0.5 Hz: (slow)
2 Hz:
(medium)
4 Hz: (fast)
OFF:
Status LEDs on I/O Modules
The status indicators (yellow) display the status of the relevant inputs/outputs.
1, 2, 3, 4
(2)
GFK-1911B Chapter 6 Diagnostics
Diagnostics
Station is active
Communications power present, backplane not
active
Communications power present, backplane active,
I/O error
Communications power present
Backplane communications has failed with the
module or between the module and the preceding
module.
Communications power not present, backplane not
active
Yellow LED Status of the input/output
ON: Associated input/output ON
OFF: Associated input/output OFF
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