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Design,
Functions and Operation
2.2
Basic System Design - with External 1/0s
You
can expand the basic system by using S5-1OOU
consist of functional units that you can combine according to the task you want to perform.
Example of a Subunit with External 1/0s
Basic Unit
For an S5-95F you always require two basic units. These two basic units are the core of the
programmable controller and are connected via a fiber optic cable.
External 1/0s
If you require more than the available onboard 1/0s or if you need special functions, you can
expand your basic system with additional external 1/0s.
The S5-95F can be expanded via bus units with S5-1OOU standard and failsafe modules. A
maximum of 8 bus units can be connected to each basic unit.
Bus Units with Terminal Blocks
are used to connect the S5-1OOU modules to the basic unit. One bus unit
Bus units
accommodate two 1/0 modules.
Standard Mounting Rail
The power supply module, the basic unit and the required bus units are mounted on
standard mounting rail.
2-2
Figure 2-2.
Basic Unit with External l/Os
(crimp snap-in or
These external 1/0s
modules (external 1/0s).
EWA 4NEB 8126210-02
can
the
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