Blocks And Block Numbers - IDEC SMARTRELAY User Manual

Programming IDEC SmartRelay

3.2 Blocks and block numbers

3.2 Blocks and block numbers
This chapter shows you how to use IDEC SmartRelay elements to create complex circuits
and how blocks and I/O are interconnected.
In the topic "From circuit diagram to IDEC SmartRelay program (Page 55)" you will learn how
to transform a conventional circuit into an IDEC SmartRelay circuit program.
Blocks
A block in IDEC SmartRelay 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.
Logic operations
The most elementary blocks are the logic operations:
•
AND
•
OR
•
...
These special functions offer you significantly greater performance:
•
Current impulse relay
•
Up/down counter
•
On-delay
•
Softkey
•
....
The chapter entitled "IDEC SmartRelay functions (Page 111)" gives a full list of the IDEC
SmartRelay functions.
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IDEC SmartRelay Manual