AML KDT750 Price Verification System - Manual (Page 12)

KDT750 APL Guide
2 - 3
Lookup Request from Client to Server
A general request from a client device will have a single item/value pair. The ITEM (left of
equals sign) will denote the source of some event, and the VALUE (right of the equals sign)
will give the server the event's data. An event could be a user scanning a bar code with an
internal scanner, a swipe of a magnetic stripe card, a press of a pushbutton, or some other
external or internal action.
In the example given above, a bar code reader, denoted by the “BAR” ITEM was used to
scan a bar code that contained the data “1234567890”.
Client to Server Event Names
APL defines certain events that server applications should be aware of: