Siemens S5-135U/155U appendix Installing a PLC with Centralized Configuration, Interface Module

Centralized and Distributed Configuration of a Programmable Controller

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

2.2.1Installing 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

IM 300-3

6ES5 300-3AB11

IM 301-3 1) 6ES5 301-3AB13

IM 300-5

6ES5 300-5CA11

IM 301-5 1) 6ES5 301-5CA12

IM 300-5

6ES5 300-5LB11

Expansion Unit

EU 183U

EU 185U

(I/O mod. only)

EU 183U

EU 185U

(I/O mod. only)

EU 184U

EU 187U

EU 184U

EU 187U

ER 701-1

Interface Module

in the EU

IM 312-3 2) 6ES5 312-3AB11

IM 312-3 2) 6ES5 312-3AB31

IM 312-5

6ES5 312-5CA11

IM 312-5

6ES5 312-5CA21

IM 306

6ES5 306-7LA11

Connecting Cable

Max. Distance

fixed to the IM 312 module 0.5 m; 0.95 m

fixed to the IM 312 module 0.5 m; 0.95 m

fixed to the IM 312 module 0.5 m; 1.5 m

fixed to the IM 312 module 0.5 m; 1.5 m

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:

SA 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).

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

2-4	System Manual
	C79000-G8576-C199-06