Siemens ISOLATED MULTI-DROP SG-6048-01 Návod k obsluze stáhnout pdf (Strana 16)

Appendices

Siemens Energy & Automation, Inc. 13

Appendix A: Block Diagram

The illustration below is a block diagram showing how the Isolated Multi-Drop converter operates.

The diagram identifies the internal components that make up the converter.

Figure A.1. Block Diagram

25-pin D

Connector

RXD

TXD

RTS

DCD

Signal

Ground

RS-232

Transceiver

Galvanically Isolated

RS-485 Logic

Tx Enable

SHIELD

RS-485

Port 1

Tx Enable

SHIELD

RS-485

Port 2

Tx Enable

SHIELD

RS-485

Port 3

Tx Enable

RS-485

Port 4

Earth Ground

Baud

Switch

Enable

Logic

RTS/DCD

AUTO/MAN

RTS

DCD

MAN

AUTO

RS-232

Connector

Earth Ground

External 15V DC output

Isolated

Supply

Power Supply

15V

120 VAC/

Source

125 VDC

SHIELD

Opto-isolators

for each data

channel

RS-485

Transceiver (4)

1 2 ... 11 12 13 14 15 16 17 18 19 20

Operator’s Manual 1
Contents 3
1 Introduction 4
2 Setting Up the Converter 5
3 Installing the Converter 10
4 Testing ACCESS Devices 11
5 Troubleshooting 14
Appendices 16
Siemens Energy & 20
Automation, Inc 20

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