Ports on a reader provided for interaction with hardware peripheral to
the reader itself. For example, a device such as an electronic eye may
be connected to a general purpose input (GPI) port so that when an
object breaks the beam of the electronic eye the reader begins reading.
As another example, an actuator device may be connected to a general
purpose output port (GPO) so that when a tag is read, a conveyor is turned
on or a dock door opened.
General Pupose Input/Output
Ports on a reader provided for interaction with hardware peripheral to the reader itself. For example, a device such as an electronic eye may be connected to a general purpose input (GPI) port so that when an object breaks the beam of the electronic eye the reader begins reading. As another example, an actuator device may be connected to a general purpose output port (GPO) so that when a tag is read, a conveyor is turned on or a dock door opened....