3-6
External I/O Function
3-6
3-9
The I/O connector has three external input ports and four external output
ports to which such devices as sensors or actuators are connected to build
a more efficient system.
The external output may be dedicated to the antenna control, depending
on the Reader/Writer settings.
3-6-1 External Input
[Online Mode]
The status can be obtained by the I/O Control Command (CC). Sequenced
operations such as those for starting and terminating the communication
with Tags by external triggers are available.
[Offline Mode]
Not available. The I/O Control Command (CC) is rejected. To perform the
function, the mode must be switched to the Online Mode by the Stop
Command (ST).
3-6-2 External Output
[Online Mode]
The output status can be modified or read-out by the I/O Control
Command (CC.) Read-out data can be evaluated by the host and output
as a control signal for Lamps or sounds.
When the I/O Automatic Changeover Setting is enabled, the external
outputs 3 (OUT3) and 4 (OUT4) are dedicated to the antenna control and
thus unmodifiable. However, the output status can be read-out.
[Offline Mode]
The external output is dedicated to the control from the Reader/Writer in
this mode. Modification/Reading out of the output status by the I/O
Control Command (CC) is unavailable.
The external output 1 (OUT1) is turned ON for a specified period of time
(modifiable) when Tags with the uncanceled EAS is detected. The
external outputs 3 (OUT3) and 4 (OUT4) are dedicated to antenna control
when the I/O Automatic Changeover setting is enabled.
