Omron V780-Series User Manual page 100

6 Functions
RSSI Filter
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.
Setting item
Disable
Enable
High threshold
Low threshold
RF Tag moving on an adjacent line
RF Tag that accidentally
entered the communications
range near the Reader/Writer
RF Tag C
Reception level
6 - 28
Description
Filtering the reception level is not performed.
Filtering the reception level is performed.
0, or -70 to -10dBm (in 1-dB increments)
0, or -70 to -10dBm (in 1-dB increments)
Non-target RF Tag C
Target RF Tag A
Non-target RF Tag B
Reader/Writer
RF Tag B
RF Tag A
Trigger
UHF RFID System V780-series Reader/Writer User's Manual (EtherNet/IP
Disable
RF Tag moving on this line
Communications are performed only with RF
Tags that match the reception level filter
conditions when the communications
command from the host device is executed.
High threshold
Low threshold
Default
Time
TM
) (Z402)