31
Ultrasonic Sensors
8.1.4 Condition Monitoring Functions
8.1.4.1 Status Message Function
The sensor provides various status messages. Due to the process data structure, four status messages can
be transmitted as individual process data.
These parameters can be used to set the status messages that are transmitted via the process data.
Function Possible Settings Default
Message 1 See table “Status Messages” on page 31 Warning signal
Message 2 See table “Status Messages” on page 31 Short circuit
Message 3 See table “Status Messages” on page 31 Undervoltage
Message 4 See table “Status Messages” on page 31 No signal
8.1.4.2 Warning/Error Output Function
The status messages used to trigger the collective message can be defined for the warning output and the
error output respectively. The status messages are OR-linked so that the output is activated when one of the
defined status messages is activated.
Function Possible Settings Default
Warning output See table “Status Messages” on page 31 Signal warning,
undervoltage
Error output See table “Status Messages” on page 31 No signal, ob-
ject too close,
object too wide,
short circuit,
device error
Status Messages
Warnings
Warning signal The object reflects too little sound (weak signal).
Undervoltage The supply voltage is too low.
Emitter off The emitter of the sensor is switched off.
Error
No signal The sensor is not receiving a signal. The error can occur, for example, due to:
• Strong air turbulence
• Ultrasonic sources too strong in the measuring range
• Very small or poorly reflective (sound-absorbing) objects are located within the working
range.
• Incorrect installation
Object too
close
The object is below the setting range or the set measuring range.
Object too far The object is above the setting range or the set measuring range.
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