SECTION 5
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SECTION 5
ID Sensor Unit Functions
83
RFID System
User's Manual
Noise Level Measurement
A noise level measurement enables checking for spatial noise, noise sources, and the effectiveness of
noise countermeasures.
This operation measures the ambient noise level in the installation environment and outputs the
measurement results to the Processing Results Monitor (CIO n+9) in the Special I/O Unit Area.
The noise level measurement will be performed with the contents that was set in advance in DM m+50 and DM m+51.
1.
Set the method to use to switch between Run Mode and Test Mode.
To start Test Mode using the switch on the front of the Unit, set DM m+80 to 0000.
To start Test Mode using bit 15 of (CIO n+0), set DM m+80 to 0001.
After setting DM Area data with the Support Software, reset the power supply to the PLC or turn ON the Special I/O Unit
Restart Bit. The DM Area settings will be transferred to the ID Sensor Unit when the power supply turns ON or when the
Special I/O Unit Restart Bit is turned ON.
2.
Set the operation to perform in Test Mode.
Set DM m+50 to C00X.
Note: Set X to 1 to specify Antenna 1, and set X to 2 to specify Antenna 2.
DM Area addresses are given in reference to “m,” where m = 100
×
Unit number.
3.
Turn ON the test switch.
Measuring the noise level is started using the method set in the DM Area.
To start Test Mode using the switch on the front of the Unit, set DM m+80 to 0000.
To start Test Mode using bit 15 of (CIO n+0), set DM m+80 to 0001.
4.
Noise level measurement will begin.
The noise level will be measured, and the communications results will be output to the Processing Results Monitor (CIO n+9) in
the Special I/O Unit Area.
Summary of Contents for CJ1W-V680C11
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