Omron V720S Series, Руководство по эксплуатации

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External I/O Function Section 3-5
3-7
3-5 External I/O Function
3-5-1 Eternal Input
There are three external user inputs that can be controlled by commands.
These can be used to design sequence operations, such as starting or
stopping communications with Tags using external triggers.
3-5-2 External Input
(1) There are four external user outputs that can be controlled by commands.
These can be used as control outputs, such as lamps and sounds,
according to decisions made by the host based on read data and other
information.
(2) In EAS mode, if a Tag for which EAS has not been released is detected,
the external output 1 (OUT1) can be turned on for a specified period of
time (configurable). For the details, see the items 3-6 Offline functions
and 5-6-12 Offline mode setting.
3-6 Offline Read Test Function
A communication test between Tag and the antenna that is connected to the
Reader/Writer is possible without connecting with the host.
In the offline mode, EAS Check command is transmitted continuously from
the antenna receiving no command from the host. This can be confirmed
visibly as COMM LED blinks.
A Tag (un-negated Tag), of which EAS bit is enabled, enters the
communication area of the antenna. External Output 1 (OUT1) turns on for
the set time (initial value: 500 ms) when the ratio of EAS response
coincidence from Tag (initial value 25%) exceed the set value.
This is visibly confirmed as the OUT1LED indicator lights up.
For setting this function, see 4-1-5 “Offline Mode Setting.”
Regarding the Tag EAS bit setting, see 5-4-2 “System Write (SW)” for
ISO/IEC chip (I.CODE2 chip), and 5-4-7 “EAS Setting Command (ES)” for
I.CODE1 chip.
For EAS Check command, see 5-4-12 “EAS Check (EA).”
Note
•
To exit offline mode, connect to the host and execute Stop command (ST)
(see 5-5-1). To place in the offline mode at the next startup, disable the
Offline mode setting, and lock the setting (see 4-1-5)
•
EAS Check command gives the communication distance longer than that
of other Read- and Write-Commands.
Execute actual commands in the online mode to set the distance precisely.