Interrupts/diagnostic messages/diagnostics
6.4 Diagnostics by LED display
Digital I/O module F-DI 4+F-DQ 2x24VDC/2A, 4xM12 (6ES7146-5FF00-0BA0)
68
Equipment Manual, V1.0, 05/2021, A5E51082342-AA
Meaning of the LEDs
The following tables set out the meaning of the status and error displays. Remedial measures
for diagnostic alarms can be found in section Fault types, causes, and corrective measures
PWR LED
Table 6- 2
Meaning of the PWR LED
PWR
Meaning
Off
Load voltage 2L+ missing or supply voltage 1L+ is too low or not present
On green
Load voltage 2L+ available
DIAG LED
Table 6- 3
Meaning of the DIAG LED
DIAG LED
Meaning
Off
No supply voltage 1L+
Flashes green
Configuration/parameterization has not been received and no module diagnostics
Alternately Flashes
red/green
Module-wide reintegratable faults such as the following are resolved and are awaiting reintegration:
•
Overvoltage
•
Undervoltage
•
PROFIsafe CRC error
•
PROFIsafe timeout error
On green
Module parameters assigned and no module or channel diagnostics
Flashes red
•
Module diagnostic and/or one or more channel diagnostics
•
Module has inconsistent hardware and/or firmware versions
Channel LED for 1oo1 input channels
Table 6- 4
Meaning of the channel LED for 1oo1 input channels
DIAGInput LEDs
Meaning
Off
Process signal = 0
On green
Process signal = 1
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