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Siemens LOGO Soft Comfort Online Help Manual

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Tutorial
3.2 Getting started with program creation
LOGO!Soft Comfort Online Help
146 Operating Instructions, 11/2017
Rules for connecting blocks
The following rules apply to the connection of blocks:
● You can connect a single input to multiple outputs.
● You cannot connect multiple inputs to a single output.
● You cannot interconnect I/O in the same path of a circuit program. Recursion is not
permitted. Interconnect a flag (Page 221) or output (Page 219) if necessary.
● SFBs (Page 241) also have green "connectors". These do not represent connecting pins,
but are used instead for assigning the parameter settings.
● Analog I/O cannot be connected to digital I/O.
Multiple connections
You can connect I/O to existing connections.
A quick and easy way of connecting blocks in large circuit prog
rams
(Page
406)
3.2.1.6
Availability of blocks
Hardware defaults
The memory space (Page 401) and the device series (Page 392) of your LOGO! determines:
● How many blocks you can use in the circuit program
● Which blocks are available to create your circuit program
After you have created a circuit program, you can call the Tools → Determine LOGO!
(Page 97) menu command or press the function key (Page 33) [F2] to display an Info
Window that shows you which LOGO! devices are available for executing your circuit
program.
The blocks which are not available for your selected LOGO! are not displayed.
Optimizing the circuit program
Should you determine in the course of creating your circuit program that a LOGO! device is
unable to handle your circuit program, you should first make use of all the functional
resources offered to you by the LOGO! device. You could, for instance, replace memory
intensive blocks (Page 395) with a structure consisting of several blocks, which altogether
require less memory space.
… 146 …


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