Siemens 6ED1050-1AA00-0BE8 User Manual

Programming LOGO! 

 

3.3 Blocks and block numbers 

 

LOGO! 

74

 

Manual, 04/2011, A5E03556174-01 

3.3 

Blocks and block numbers 

This chapter shows you how to use LOGO! elements to create complex circuits and how 

blocks and I/O are interconnected. 
In the topic "From circuit diagram to LOGO! Program (Page 76)" you will learn how to 

transform a conventional circuit into a LOGO! circuit program. 

Blocks 

A block in LOGO! represents a function that is used to convert input information into output 

information. Previously you had to wire the individual elements in a control cabinet or 

terminal box. 
When you create the circuit program, you interconnect the blocks. To do so, simply select 

the connection you require from the Co menu. The menu name Co is an abbreviation of the 

term "Connector".  

Logic operations 

The most elementary blocks are the logic operations: 
●  AND 
●  OR 
●  ... 

,

,
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4

,QSXWV,DQG,DUHKHUHFRQQHFWHGWRWKH
25EORFN7KHODVWWZRLQSXWVRIWKH
EORFNUHPDLQXQXVHGDQGDUHLGHQWLILHGE\
WKHFUHDWRURIWKHFLUFXLWSURJUDPZLWKDQ
[

 

These special functions offer you significantly greater performance: 
●  Pulse relay 
●  Up/down counter 
●  On-delay 
●  Softkey 
●  .... 
The chapter entitled "LOGO! functions (Page 137)" gives a full list of the LOGO! functions.