Rockwell-automation 1771-DB Basic Module User Manual - Series A Manual de usuario descargar pdf (Pagina 25)

Chapter 4

Using the Serial Ports

This chapter describes how to use the program serial port and the

peripheral serial port to connect terminals, Data Cartridge Recorders,

Digital Cassette Recorders, printers and other compatible devices.

The BASIC Module has a program serial port and a peripheral serial port

capable of connecting to various user devices (figure 4.1). You can

configure each port independently. Both ports are electrically isolated from

each other and from the backplane up to 500 V with no external power

needed. Both ports operate from 300 baud to 19.2K baud and default to

1200 baud.

Figure

4.1

Program/Peripheral Port Locations

If you use an RS-423/RS-232 device or an Allen-Bradley Industrial

Terminal you can use up to a 50 foot maximum cable length for

connections from either the program or peripheral ports. Refer to the

specifications section in Chapter 2 for cable length recommendations.

4.1

Chapter

Objectives

4.2

Using the BASIC Module

Program and Peripheral

Communication Ports

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Rockwell-automation 1771-DB Basic Module User Manual - Series A Manual de usuario Pagina 25