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Block representation on the LOGO! onboard display
The figure below shows a typical view of the LOGO! onboard display. As you can see, it can
show only one block at a time. We have therefore introduced block numbers to help you
check the circuit structure.
Assigning a block number
LOGO! assigns each new block in a circuit program a block number.
LOGO! uses these block numbers to indicate the block interconnections. This means that
these numbers are mainly an aid to your orientation in the circuit program.
The figure above shows you three views of the LOGO! onboard display, which represent the
circuit program. As you can see, LOGO! interconnects the blocks using their numbers. To
scroll the circuit program, use the key .
Advantages of block numbers
You can connect almost any block to an input of the current block by means of its block
number. In this way, you can reuse the interim results of logical or other operations, reduce
programming effort, save memory space and clean up your circuit layout. To do so, however,
you need to know how LOGO! has named the blocks.
LOGO!
Manual, 04/2011, A5E03556174-01
Programming LOGO!
3.3 Blocks and block numbers
75
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