user manual

Rev. A2, 11/08 IRU-2xx4/3xx4
13
Automation Products Group, Inc.
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SENSITIVITY
Sensitivity controls the gain of the receive circuit. High values will amplify the
return pulse enabling the sensor to detect weak signals. Caution: High sensitiv-
ity setting increases the chance for the sensor to detect unwanted objects, which
can decrease the reliability of the output.
To read the Sensitivity in a sensor, use the command structure:
Send Receive
AAh Start Byte 66h Start Byte
01h, Sensor Number 01h Sensor Number
09h Command 09h Command
00h Data (not used) ##h Sensitivity (High Byte)
00h Data (not used) ##h NA (Low Byte)
55h End Byte ##h NA
99h Stop Byte
To change the Sensitivity in the sensor to 80%, use the command structure;
Send
AAh Start Byte
01h, Sensor Number
0Ah Command
50h Data 80 decimal = 50 hex
00h Data (not used)
55h End Byte