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Modular Logo! Setup; Maximum Setup - Siemens LOGO! Manual

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Carrying out tests
You must ensure safety in your plant.
Before finally commissioning a system, carry out complete functional testing as well as all
the necessary safety testing.
Also, test for any predictable faults that can occur. This means that you will avoid any danger
to the plant or to people during operation.
In all cases where the occurrence of failures can result in material damage or injury to
persons, take special measures to enhance the safety of the installation - and the
application. System-specific and special regulations exist for such applications. Follow these
regulations exactly when installing the control system (for example, VDE 0116 for burner
control systems).
For electronic control equipment with a safety function, the measures that you must take to
prevent or rectify faults are based on the risks involved in the installation. Beyond a certain
degree of hazard the basic measures mentioned above are not sufficient and you must take
additional safety measures for the controller.
Important information
Follow the instructions in the operating manual exactly. Incorrect handling can render
measures intended to prevent dangerous faults ineffective, or generate additional sources of

Modular LOGO! setup


Maximum setup

LOGO! supports a maximum of 24 digital inputs, 8 analog inputs, 16 digital outputs, and 2
analog outputs (Page 11). You can achieve the maximum setup in different ways as shown
Maximum setup of a LOGO!
LOGO! Base Module, 4 digital modules and 3 analog modules (example)
Manual, 10/2017, A5E01248535-AA
analog inputs onboard - four in use
LOGO! installation and wiring
2.1 Modular LOGO! setup


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