LOGO! Manual
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3.8 Memory space and circuit dimensions
The size of a circuit program in LOGO! is limited by the
memory space (memory used by the blocks).
Memory areas
Program memory:
LOGO! allows only a limited number of blocks in your
circuit program.
The second limitation is based on the maximum number
of bytes a circuit program may contain. The total num-
ber of bytes used can be determined by adding up the
number of bytes used for the relevant function blocks.
Retentive memory (Rem):
In this area, LOGO! stores process variables which
need to be retentive, e.g. the hours counter value.
Blocks with optional retentivity use this memory area
only if this function is actually enabled.
Resources available in LOGO!
A circuit program in LOGO! can occupy the following maxi-
mum resources:
Bytes Blocks REM
2000 130 60
LOGO! monitors memory utilization, and offers only those
functions from the lists for which it can actually provide suf-
ficient memory space.
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