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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
●
...
,
,
[
[
ุ
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.
Summary of Contents for LOGO!
Page 8: ...Preface LOGO 8 Manual 04 2011 A5E03556174 01 ...
Page 278: ...LOGO functions 4 4 Special functions list SF LOGO 278 Manual 04 2011 A5E03556174 01 ...
Page 366: ...Abbreviations LOGO 366 Manual 04 2011 A5E03556174 01 ...
Page 372: ...Index LOGO 372 Manual 04 2011 A5E03556174 01 ...
Page 534: ...Index Basic Panels 162 Operating Instructions 04 2012 A5E02421799 03 ...