Siemens Simantic ET200SP - Inserting I;O Modules; Motor Starters and BU Covers

Wiring
5.13 Inserting I/O modules / motor starters and BU covers
Distributed I/O system
124 System Manual, 12/2016, A5E03576849-AG
Reference
You can find additional information on the PROFIBUS FastConnect bus connector in the
corresponding product information on the Internet
(http://support.automation.siemens.com/WW/view/en/58648998).
5.13
Inserting I/O modules / motor starters and BU covers
Introduction
● The I/O modules are plugged into the BaseUnits. They are self-coding and type-coded.
● The BU covers are fitted to BaseUnits whose slots are not equipped with I/O modules.
● BU covers are plugged onto BaseUnits whose slots have been reserved for future
expansion (as empty slots).
● The BU covers for motor starters serve as touch protection covers for unoccupied slots.
The BU covers have a holder for the reference identification label on the inside. For future
expansion of the ET 200SP, remove the reference identification label from the holder and
insert it into the final I/O module.
It is not possible to attach a reference identification label to the BU cover itself.
There are three versions:
– BU cover with a width of 15 mm
– BU cover with a width of 20 mm
– BU cover with a width of 30 mm (for motor starters)
Requirement
Refer to chapter "Application planning (Page 32)".