User's Manual

User Guide

WherePort III User Guide D948 Rev B

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THE WHEREPORT

The WherePort III is a location indicator that is part of the Zebra Enterprise Solutions

(ZES) Real Time Locating System (Figure 1). The WherePort transmits a localized

magnetic field. Since the field is confined (programmable from approximately 3 feet to

25 feet) it is a reliable indicator of the location of key sites in the facility. When

WhereTags pass through the WherePort field they transmit the ID of the WherePort. The

WhereTag response can be programmed to indicate needed information about the status

of the asset or object to which the tag is attached.

WherePorts are mounted to fixed locations such as gates, loading docks, or cells

along an assembly line so that information required about the movement of assets

through the facility will be gathered by the RTLS. As tagged assets pass through the

fields the tag transmits the WherePort ID that pinged it and any other programmed status

information.

Figure 1 WherePort

The VSS system is programmed with the location of each WherePort and their ID. When

a WhereTag transmits a message that includes the ID of the WherePort field that it is in,

the system knows where the WhereTag is. This is particularly important when locating

transitions is important or where the layout of the site makes it difficult to have enough

sensors to accurately locate the tag using RTLS.

Status LED