Diagnostic Events - Endress+Hauser Liquiphant FTL31 IO-Link Operating Instructions Manual

Diagnostics and troubleshooting
Red LED continuously lit
Internal sensor error.
‣
Replace device.
There is no external signaling via LEDs on the metal housing cover (IP69).
LED indicator on M12 plug, can be ordered as an accessory
Green LED not lit
No supply voltage.
‣
Check plug, cable and supply voltage.
12.3

Diagnostic events

12.3.1 Diagnostic message
Faults that are detected by the device' s self-monitoring system are displayed as a diagnostic
message via IO-Link.
Status signals
The table lists the messages that may occur. The Actual Diagnostic (STA) parameter displays
the message with the highest priority. The device has four different status information codes
according to NE107:
"Failure"
A device error has occurred. The measured value is no longer valid.
A0013956
"Maintenance required"
Maintenance is required. The measured value is still valid.
A0013957
"Function check"
The device is in the service mode (e. g. during a simulation).
A0013959
"Out of specification"
The device is being operated:
• Outside its technical specifications (e. g. during warmup or cleaning process)
A0013958
• Outside the parameter configuration undertaken by the user (e. g. level outside of configured span)
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Liquiphant FTL31 IO-Link
Endress+Hauser