SECTION 5
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SECTION 5
ID Sensor Unit Functions
81
RFID System
User's Manual
Range Level Measurement
A range level measurement allows for easy checking of the installation positions of Antennas and RF
Tags.
This test operation measures the Antenna and RF Tag installation distance in relation to the RF Tag
interrogation zone. The measurement results are output to the Processing Results Monitor (CIO n+9)
in the Special I/O Unit Area. The measurement results can also be checked on the Amplifiers operation
indicators.
The range level changes dramatically depending on the ambient environment. Use it as a guide for the installation
position and test operation sufficiently in Run Mode using the actual installation environment. Levels higher than range
level 4 may not be displayed, but this does not indicate an error and performance in Run Mode will not be affected.
The communications test 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 A00X and set the number of test bytes in DM m+51.
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 range 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.
Range level measurement will begin.
The range 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. The measurement results can also be checked on the Amplifier's operation indicators.
Summary of Contents for CJ1W-V680C11
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