User Manual

en_BA_U500_UR18_Gen2_IO-Link.docx 26/43 Baumer Electric AG
04.04.2019/ Frauenfeld, Switzerland
4.5 Quality Parameters
This parameter indicates the signal strength from the received reflection relative to the set threshold. It is
useful to be monitored by the PLC to detect weak signals which may be caused by misalginement or by dirt
on the sensor surface.
Parameter name
Short Description
Rights
Unit / Allowed values
Quality.Value
Quality value indicates the quality of
the reflected signal
ro
units dB
Quality Bit.Threshold
Selects the Quality Threshold, if the
quality value is below the threshold
the LEDs start to blink and the quality
bit in the process data is set to 1
rw
Limits: 0 to 40 dB, units
dB; Default 12 dB
4.6 Temperature Settings
The speed of sound depends strongly on the temperature. Therefore Baumer ultrasonic sensors are
temperature corrected. When “internal temperature” is selected, the sensor will use temperature sensors
located inside of the sensor to correct for variation in the speed of sound with respect to the ambient
temperature. In order to improve the accuracy or to remove the warm up time, it is possible to use an
external temperature sensor and set the temperature using the parameter “Temperature
Settings.Environment Temperature”. When this is done the self heating of the sensor can be made
irrelevant. The parameter “Temperature Settings.Enable Environment Temperature” has to be set to
“External Temperature”.
Parameter name
Short Description
Rights
Unit / Allowed values
Temperature
Settings.Enable
Environment Temperature
Enable usage of external
environment temperature.
rw
External Temperature /
Internal Temperature
Default: Internal
Temperature
Temperature Settings.
Environment Temperature
Sets the temperature that is used by
sensor to calculate the distance. It is
only used when the parameter
"Temperature Settings.Enable
External Environment temperature" is
set to External Temperature.
rw
Limits : -40°C to 85°C
Default: 20°C
Unit Selection.Temperature
Select temperature unit (rw
parameter in menu Parameter/
Temperature Settings, ro in menu
Diagnosis/ Device Temperature)
rw
Kelvin / Celsius /
Fahrenheit
Default: Celsius
Unit Selection.Time
Select time unit (rw parameter in
menu Parameter/ Temperature
Settings, ro in menu Diagnosis/
Operating Time)
rw
Second / Minute / Hour
Default: Second