Knick MemoTrans MT 201N Instructions D'installation page 20

7.1.2 LED display
LED messages signal the status of the device and sensor.
LED behavior
Green
Flashes quickly
Green
Flashes twice
Green
Flashes slowly
Green
Flashes quickly three times
Red
Flashes quickly
20
Status
Everything OK
Device starting up
Everything OK
Read out Memosens sensor information from sensor to transmitter (sensor type,
calibration data, etc.)
Everything OK
Sensor and device OK and functioning correctly.
Everything OK
Measured value at PLC in automatic HOLD.
If the "Sensor replacement alarm delay" is exceeded, the device transmits a signal on
alarm.
The automatic hold is set to 30 seconds.
Failure of device or sensor Fault
state as per NAMUR NE107