Omron V780-Series User Manual page 98

6 Functions
Channel
You can use the channel setting to select the channel (i.e., the frequency band) to use for execution
of communications commands.
Use this setting to prevent mutual interference with nearby Reader/Writers and interference with
other wireless devices.
Setting
Auto channel
Specified Channel
V780-HMD68-EIP-JP
*1. The channel used can only be specified in models V780-HMD68-EIP-JP. The channel cannot be specified in
the other models.
Additional Information
The channel number was defined in accordance with the regulations of the Japanese Radio
Act.
Gen2 Session
The Gen2 session setting determines the length of time to hold the status of the RF Tag. The
Reader/Writer communicates with an RF Tag and then sets a flag in the RF Tag after communica-
tions to indicate that it has been processed. The timing for retaining this flag depends on the ses-
sion. We recommend that you normally use the default setting of S0.
Setting
S0
S1
S2/S3
Precautions for Correct Use
If you specify a stop time in the transmission time settings and then stop the output during RF
Tag communications, you cannot use session S0 for multiaccess communications. If you spec-
ify S0 anyway, results may be returned more than once for the same RF Tag. (When the output
is stopped, the status in the RF Tag is reset, so the "already processed" status is cleared.)
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The channel is automatically switched depending on
the conditions of the Reader/Writer.
This specifies the channel to use.
*1
5CH: 916.8MHz
11CH: 918.0MHz
17CH: 919.2MHz
The status of the flag is not retained after power to the RF Tag is
turned OFF.
Use this setting to always process communications for each com-
mand for all RF Tags that are in the communications range.
The status of the flag is retained for 500 ms to 5 s regardless of
whether the power supply to the RF Tag is turned ON or OFF.
Use this setting to process communications at a set interval for the
same RF Tags when a communications command is repeatedly
executed.
The status of the flag is retained for at least 2 s after power to the
RF Tag is turned OFF.
Use either of these settings to process communications only once
when each RF Tag first enters the communications range when a
communications command is repeatedly executed.
UHF RFID System V780-series Reader/Writer User's Manual (EtherNet/IP
V780-HMD68-EIP-
Description
Default
Auto channel
Default
S0
TM
) (Z402)