Rockwell-automation 1770-KF2 Data Highway or Highway Plus Interface Mo Manual de usuario descargar pdf (Pagina 40)

Installation

Chapter 3

3-16

Figure 3.9

Connection to 1773-KA or 1775-KA Module

25-Pin Female Connector 25-Pin Male Connector

(Cat. No. 1778-CR)

Asynchronous

Port Connector

of 1770-KF2

Module (RS-232-C)

A. Connection Diagram

RS-232-C

Port Connector

of 1773-KA

1775-KA

Module

B. W

iring Diagram

User-Supplied Cable,

Belden 8723, or Equivalent

(50 Feet Maximum)

User-Supplied Connectors

Port Connector

of 1770-KF2 Module

(RS-232-C)

RS-232-C

25-Pin Female

Connector

25-Pin Male

Connect the Shield

8 8

at One End Only

User-Supplied Cable,

(50 Feet Maximum)

Belden 8723, or Equivalent

User-Supplied Connectors

Port Connector

of 1773-KA

1775-KA

Module

Chassis Ground

RXD

TXD

Signal Ground

RTS

CTS

DSR

DCD

11312

DTR

TDB

Asynchronous

Connector

Answering

The module continually asserts DTR when it is waiting for a call. Under

this condition, the modem will answer a call and assert DSR as soon as it

detects ringing. The module does not monitor the RING indicator in the

RS-232 interface. Once it detects DSR, the module starts a timer (around

10 seconds) and waits for the DCD signal. When the module detects

DCD, communication can start.

If the module does not detect DCD within the timeout, the module turns

DTR off. This causes the modem to hang up and break the connection.

When the hang-up is complete, the modem turns off DSR. This causes

the module to reassert the DTR line and wait for another call. This

feature protects access to the phone if someone calling a wrong number

reaches this station.

1 2 ... 35 36 37 38 39 40 41 42 43 44 45 ... 234 235

Comentarios a estos manuales

Sin comentarios

Rockwell-automation 1770-KF2 Data Highway or Highway Plus Interface Mo Manual de usuario Pagina 40

Comentarios a estos manuales

Relacionado con productos y manuales para Equipo Rockwell-automation 1770-KF2 Data Highway or Highway Plus Interface Mo