Omron V680 Series User Manual page 234

Section 8
Web Browser Interface
 RF Analyzer Graphs
You can display time-based graphs of diagnostic log information.
This allows you to visually understand the data from communication diagnostic and quantitatively
confirm the degree of leeway in communications.
Two parameters are displayed for the graph.
1. Signal Level
To communicate with RF Tags, the Signal levels of the Reader/Writer and RF Tags must be
sufficiently high. You can display the Signal levels in 10 levels from 0 to 10 on a bar graph. The
higher the value, the more leeway there is in communications. If there is sufficient communications
leeway, the level is 10. If a communication fails (i.e., if an error occurs), the level will be 0 and no bar
will be displayed. A value of 1 to 9 means that the communications leeway is low (i.e., that
communications are unstable), and the bar will be displayed in yellow. In this case, we recommend
that you follow the guidance described above and adjust the installation conditions to increase the
communications leeway as close as possible to a level of 10.
2. Noise Level
The ambient noise level around the Reader/Writer during communications with the RF Tag is
displayed in red on a broken-line graph. The lower the noise level, the better the conditions. A noise
level of 5 or higher means that the communications leeway is low (i.e., that communications are
unstable), and the bar will be displayed in yellow.
Click this button to refresh
the display.
RFID System
232
User's Manual
(Modbus TCP)
You can save the diagnostic log
in a CSV file on the computer.
Returns you to the log table.
Number from the log table
Click this button to clear the
diagnostic log.