Omron V780 Series, Руководство пользователя

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Appendices
A - 4 UHF RFID System V780-series Reader/Writer User’s Manual (Z389)
A-2 RF Tag Communications Times (For
reference only)
The RF communications time is the time from when the host device sends a communications command
to the Reader/Writer until it receives a response. The communications time differs depending on the
radio regulations of each country, or the settings of the RF communications command and RF commu-
nications speed. In actual usage, the communications time may change under the influence of the
installation environment, system conditions, type of RF Tags, and other factors. Perform sufficient test-
ing in advance.
Precautions for Correct Use
If you enable communications diagnostics, the communications times will be increased by up to
100 ms.
Precautions for Correct Use
With multiaccess communications, collisions occur between communications with multiple RF
Tags. Therefore, the communications time varies more than with single-access communica-
tions. The communications time also varies with the RF Tags that are used, the orientation of
the RF Tags, and the ambient environment. Therefore, the communications times in the above
graphs are strictly for reference only. Use them only as reference values for determining com-
munications timeout times in the actual environment.
Measurement Conditions
Measurement environment Radio wave darkroom
RF Tag
V780-A-JIME-Z3BLI-10 (made by Toppan Forms Co., Ltd.)
*1
*1. The RF Tag was mounted to a V780-A-TA-133-10 Attachment.
Communications distance Fixed at 0.5 m (between Reader/Writer and RF Tag)
Transmission power 27 dBm
RF communications speed Given below.
Communications command Given below.
Communications distance
Fixed at 0.5 m (between
Reader/Writer and RF Tag) Fixed at 1.8 m (between
Reader/Writer and RF Tag)
1 to 64 sheets
0.5 m
1.8 m