User's Guide

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User Guide

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TFF-2220-00AA and TFF-2221-00AA User’s Guide D1436 Rev B

1 OVERVIEW

The Zebra Enterprise Solutions (ZES) WhereCall System allows users in manufacturing and

assembly operations to request service or specific parts without leaving their workstations.

Specific parts or service requests may be assigned to individual WhereCall IV devices so that

users may indicate which item is needed. For example, an assembly worker using several parts:

Each part is associated with a separate WhereCall IV device located in the workstation. By

pressing the green button on the WhereCall IV device, a radio signal is sent by the WhereCall

System to the computer system in the supply area, indicating which workstation requires the

specified part or service. The display will first blink CALL , and then alternate between CALL

and the time since the button press. This message can be customized to site preferences.

The WhereCall IV also operates in an optional SWITCH mode. This mode can be used to

indicate a status; the display will blink either -- ON -- or - OFF -- to indicate a functional status.

The status will toggle each time the button is pressed. These messages can also be customized

to site preferences. Each status can display a multi-word message on up to two different screen

buffers.

To insure that the WhereCall system is in constant operation, real-time monitoring using an “I’m

Still Alive” blinking transmission advises the system supervisor of the status of each WhereCall

IV device. Battery status is also included in these “I’m still alive” messages as well as in the

switch blinks, as well as in the button initiated blinks.

The WhereCall IV may be mounted in a work area with removable fasteners, double-sided foam

tape or with mounting brackets and screws (Refer to Section 2.1, Installation and Mounting).