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Rockwell Automation Publication 35-UM001A-EN-P - May 2022
Chapter 9 Diagnostics, Status, and Troubleshooting
I/O Status Indicators
The standard I/O LEDs consist of:
•
IN0: input
•
IN1: input
•
IN2: input
•
IN3: input
•
IN/OUT0: configurable I/O
•
IN/OUT1: configurable I/O
and
describe the I/O status indicator state and status.
The safety I/O LEDs consist of:
•
SAFETY IN0: safety input
•
SAFETY IN1: safety input
•
SAFETY IN2: safety input
•
SAFETY IN3: safety input
•
SAFETY OUT0: safety output
describe the safety I/O status indicator state
and status.
Table 79 - Standard Input LEDs: IN0…IN3
State
LED Indicator Status Description
Input off
Off
Input is off, no fault
Input on
Steady green
Input is on, no fault
Input fault
Steady red
Input is faulted
Table 80 - Configurable I/O LEDs: IN/OUT0…IN/OUT1
State
LED Indicator Status Description
I/O off
Off
Input or output is off, no fault
Input on
Steady green
Input is on, no fault
Output on
Steady amber
Output is on, no fault
I/O fault
Steady red
I/O point is faulted
ATTENTION:
Do not use light-emitting diode (LED) status indicators on the
safety I/O for safety operations. Do not use the colors as indication of safe or
unsafe states.
Table 81 - Safety Input LEDs: SAFETY IN0…SAFETY IN3
State
LED Indicator Status Description
Safety input off
Off
Input is off or not configured, no fault
Safety input on
Steady green
Input is on, no fault
Safety input fault
Steady red
Input is faulted, due to wiring or input circuit fault
Partner fault
Flashing red
Partner input circuit of a dual-input configuration is faulted
Table 82 - Safety Output LED: SAFETY OUT0
State
LED Indicator Status Description
Safety output off
Off
Output is off or not configured, no fault
Safety output on
Steady green
Output is on, no fault
Safety output fault
Steady red
Output is faulted, due to wiring or output circuit fault