Omron V780-HMD68-EIP-JP, User Manual

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6 Functions
6 - 28 UHF RFID System V780-series Reader/Writer User’s Manual (EtherNet/IP
TM
) (Z402)
The RSSI (received signal strength indicator) gives the strength level of the signal received from an
RF Tag. (This is called the reception level.) If you set the reception level thresholds for the RSSI fil-
ter, communications will be performed only with RF Tags that have a reception level that is between
the low and high thresholds
(Low threshold ≤ Reception level ≤ High threshold)
Use this to prevent reading non-target RF Tags.
RSSI Filter
Setting item Description Default
Disable Filtering the reception level is not performed. Disable
Enable Filtering the reception level is performed.
High threshold 0, or -70 to -10dBm (in 1-dB increments)
Low threshold 0, or -70 to -10dBm (in 1-dB increments)
Target RF Tag A
Reader/Writer
High threshold
Reception level
Low threshold
Non-target RF Tag C
Non-target RF Tag B
RF Tag moving on an adjacent line
RF Tag moving on this line
RF Tag A
RF Tag B
RF Tag C
Time
Trigger
Communications are performed only with RF
Tags that match the reception level filter
conditions when the communications
command from the host device is executed.
RF Tag that accidentally
entered the communications
range near the Reader/Writer