Appearance Of The Rs 485 Repeater; (6Es7972-0Aa01-0Xa0) - Siemens SIMATIC S7-300 Reference Manual

Programmable logic controllers module data

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Appearance of the RS 485 Repeater;

(6ES7972-0AA01-0XA0)

The table below shows the appearance of the RS 485 repeater and lists its

Description and Functions of the RS 485 Repeater

Repeater Design

L+ M PE M 5.2

RS 485-REPEATER

Programmable Logic Controllers S7-300 Module Data

A5E00105505-03

Connection for the RS 485 repeater power supply (pin "M5.2" is

the ground reference, if you want to measure the voltage

difference between terminals "A2" and "B2").

Shield clamp for the strain relief and grounding of the bus cable

of bus segment 1 or bus segment 2

Terminals for the bus cable of bus segment 1

Terminating resistance for bus segment 1

Switch for OFF operating mode

(= isolate bus segments from each other – for example, for

Terminating resistance for bus segment 2

Terminals for the bus cable of bus segment 2

Slide for mounting and removing the RS 485 repeater on the

standard rail

Interface for programming device/OP in bus segment 1

LED 24 V supply voltage

LED for bus segment 1

LED for bus segment 2

RS 485 Repeater

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