Programming IDEC SmartRelay
IDEC SmartRelay Manual 103
3.7 Memory space and circuit program size
The size of a circuit program in IDEC SmartRelay is limited
by the memory space (memory used by the blocks).
Memory areas
• Program memory:
IDEC SmartRelay allows only a limited number of blocks
in y
our circuit program.
The second limitation is based on the maximum number
of bytes a
circ
uit program may contain. The total number
of bytes used can be determined by adding up the
number of bytes used for the relevant function blocks.
• Retentive m
emory
(Rem):
In this area, IDEC SmartRelay stores va
lues which need
to be retentive, for example, the operating hours counter
value. Blocks with optional retentivity use this memory
area only if this function is actually enabled.
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