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“LS Ubiquitous RF-ID System”
3) Buffer Read Mode
[Fig. 4.1.1.5] The case that Reader is operated by Buffer Read mode
This mode means the mode that senses the Tag arriving within Antenna Read Zone according
to initial environment setting value and immediately saves it in FIFO (First Input First Output),
and then sends or clear the FIFO value if it receives a request from the upper Host (PLC or PC).
[Fig. 4.1.1.6] shows the operation flow in Buffer Read Mode.
[Fig. 4.1.1.6] Operation Flow in Buffer Read Mode
Start
Communication cable connection
(RS-232/422)
Reader address setting
Power cable connection
(DC 24V)
Is the command in from the
upper Host ?
Command decoding and run
In case of Tag Control
command
Sends the signal that
there is no tag to the
upper Host.
In case of Reader
Control command
Is Tag information
saved in the Reader ?
Data transmission
Summary of Contents for LGRF-H
Page 23: ...23 70 LS Ubiquitous RF ID System 2 4 Product Appearance and Dimension Fig 2 4 1 LGRF H Reader...
Page 24: ...24 70 LS Ubiquitous RF ID System Fig 2 4 2 LGRF H Reader Fig 2 4 3 Antenna A Type...
Page 25: ...25 70 LS Ubiquitous RF ID System Fig 2 4 4 Antenna B Type Fig 2 4 5 Antenna C Type...
Page 70: ...70 70 LS Ubiquitous RF ID System 2 Example of MELSEC PLC ASCII mode communication...
