beautypg.com

1 installing a plc with centralized configuration – Siemens S5-135U/155U User Manual

Page 22

background image

2-4

System Manual

C79000-G8576-C199-06

With the distributed configuration, a distinction is made between parallel and
serial communication. The main features of these types of communication
are as follows:

S

Parallel

fast data transmission line length of up to 600 m

S

Serial

slower data transmission line length of up to 3000 m

2.2.1

Installing a PLC with Centralized Configuration

The following table shows which interface modules and connecting cables
can be used for connecting the various expansion units to the CC in a
centralized configuration.

Interface Module

in the CC

Expansion Unit

Interface Module

in the EU

Connecting Cable

Max. Distance

IM 300-3
6ES5 300-3AB11

IM 301-3

1)

6ES5 301-3AB13

EU 183U
EU 185U
(I/O mod. only)

EU 183U
EU 185U
(I/O mod. only)

IM 312-3

2)

6ES5 312-3AB11

IM 312-3

2)

6ES5 312-3AB31

fixed to the IM 312 module
0.5 m; 0.95 m

fixed to the IM 312 module
0.5 m; 0.95 m

IM 300-5
6ES5 300-5CA11

IM 301-5

1)

6ES5 301-5CA12

EU 184U
EU 187U

EU 184U
EU 187U

IM 312-5
6ES5 312-5CA11

IM 312-5
6ES5 312-5CA21

fixed to the IM 312 module
0.5 m; 1.5 m

fixed to the IM 312 module
0.5 m; 1.5 m

IM 300-5
6ES5 300-5LB11

ER 701-1

IM 306
6ES5 306-7LA11

6ES5 705-0xxxx
0.5 m to 2,5 m

1)

This IM has a second interface for distributed communication.

2)

The last IM 312-3 always requires a 6ES5 760-0AB11 terminator.

To install a PLC in a centralized configuration, you must observe the
following conditions:

S

A centralized configuration is generally only suitable for connecting I/O
modules (DI, DO, AI, AO) and some intelligent I/O modules (IPs) in the
EU (see the Configuring Aids in the catalog and Chapter 4).

S

The line length between the IM in the CC and the last IM in the EU must
not exceed 2 m.

Centralized and Distributed Configuration of a Programmable Controller