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JANUS? 2020 Hand-Held Computer (4MB) - Intermec

JANUS? 2020 Hand-Held Computer (4MB) - Intermec

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NF BC Networking the Reader<br />

Port How Is It Designated As a COM Port?<br />

COM1 By default.<br />

COM4 Use the modem card’s configuration tool.<br />

Logical COM4 By default in JR<strong>2020</strong>.<br />

6<br />

Your reader can have both an RF port designated “logical COM4” and a<br />

modem card in the Type II PC card drive designated “COM4.” Accessing the<br />

RF network through logical COM4 will not conflict with accessing the serial<br />

communications network through COM4.<br />

Note: <strong>Intermec</strong> recommends that you do not designate any COM port as COM3. For<br />

help, see “Understanding How IRQs Affect COM Ports” later in this chapter.<br />

Examining the COM1 Optical Port Signals<br />

The reader’s COM1 is an optical serial port. You can communicate through<br />

COM1 using a communications dock, optical link adapter, or another reader.<br />

This illustration shows the optical port’s signals:<br />

COM 1<br />

Optical port<br />

Request to Send<br />

Clear to Send<br />

Port Select<br />

Receive Data<br />

Transmit Data<br />

<strong>Intermec</strong> <strong>Intermec</strong><br />

<strong>2020</strong>U.003<br />

6-7

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