IDEC FL1E SmartRelay - Manual (Page 117)

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 your circuit program. 
The second limitation is based on the maximum number
of bytes a circuit 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 memory (Rem):
In this area, IDEC SmartRelay stores values 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.