Number of function blocks and memory capacity used for these function blocks limit the circuit program size. The retentive memory (REM) capacity used for circuit programming is also limited as follows:

Total number of blocks: 130 (FL1B = 56 blocks)
Total memory capacity: 2000 bytes
Total retentive memory (REM) capacity: 60

Please refer to the Chapter 3.7 of the Hardware Manual (FL9Y-B826) for more details on the memory capacity and the REM capacity for each function block.