Application Planning - Siemens SIMATIC ET 200SP System Manual

Application planning

Overview
The BaseUnits (BU) are classified according to different types. Every BaseUnit type is
distinguished by characteristics that match certain I/O modules and motor starters (see the
following table and graphics).
You recognize the BU type for an I/O module by the last two digits of an I/O module's article
number.
The BU type onto which you can plug the respective I/O module is printed on the I/O
modules. You can therefore read which BU type you need straight from the I/O module (see
Factory labels (Page 124) (page 122)).
Example: On the output module DQ 16x24VDC/0.5A ST with article number 6ES7132-
6BH01-0BA0 the information "BU: A0" is printed. This means you can plug this I/O module
into a BaseUnit of BU type "A0", which means any BaseUnit whose article number ends in
"A0". I/O modules that are suitable for two BU types are labeled accordingly, for example
"BU: A0, A1".
Note
You will find a complete overview of the possibilities of combining BaseUnits and I/O
modules /motor starters in the Product information for documentation of the ET 200SP I/O
system (http://support.automation.siemens.com/WW/view/en/73021864).
Distributed I/O system
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