Installation
6.6 Installing the CPU
Automation system
142 System Manual, 01/2023, A5E03461182-AK
6.6 Installing the CPU
Introduction
The CPU executes the user program and supplies the electronics of the modules with power
via the backplane bus.
Requirements
The mounting rail is installed.
In a system power supply located on the left next to the CPU, a U connector is inserted on the
back right.
e that the CPU is supplied with a removable protective film on the display. You can
remove the protective film as required.
Tools required
Screwdriver with 4.5 mm blade
Installing the CPU
Watch video sequence (https://support.industry.siemens.com/cs/ww/en/view/78027451)
To install a CPU, follow these steps:
1. Insert a U-connector into the back right on the CPU.
2. Install the CPU to the mounting rail. Also push the CPU to the left system power supply if
necessary.
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