Plus RS-232 Especificações descarregar pdf (Página 26)

CHAPTER 3: Installation

Figure 8. Multipoint, 2-Wire (Half-Duplex).

Sample 4-Wire Multipoint Configuration

In the following application, an industrial controller is used to gather information

from several remote programmable logic controller (PLC) stations (see Figure 9).

A system protocol has been defined such that all the programmable logic

controllers receive the information sent by the industrial controller, but only the

remote station specifically addressed will respond. In this system, the industrial

controller and all the remote stations are DTE devices. The step-by-step installation

procedure follows Figure 9.

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