User Manual

Programming LOGO!
3.2 Blocks and block numbers
LOGO!
58 Manual, 06/2014, A5E33039675
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. LOGO! shows the block number on the top of the display by
default if you assign no name to this block. The block numbers help you check the circuit
structure. Alternatively, you can also choose to display a customized block name instead of
the block number. For more information about assigning a block name, refer to Section
"Circuit program input (Page 69)".
Assigning a block number
LOGO! automatically 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 keys
or .