Chapter 2 Devices 10 ms SM404 (10 ms) 100 Hz 5 ms 100 ms SM405 (100 ms) 10 Hz 2_ 50 ms 200 ms SM406 (200 ms) 5 Hz 100 ms SM407 (1 sec) 1 Hz 500 ms 11. The flags related to the memory card You use the memory card to back up the data in the PLC. Refer to Chapter 6 for instructions concerning the memory card. 2-87 SM 450-SM453, SM Device Function SM36 E nable saving data to the memory card. When ON, the PLC runs according to the value in the SR36. M SM450 O O emory card is present. N: memory card is present. FF: memory card is not present. SM451 M rd is write-protected. rd i D SM452 O O ata in the memory card is being accessed. N: data in the memory card is being accessed. FF:
data in the memory card is not accessed. E SM453 O O rror during the operation of the memory card. N: error occurred. FF: no error. E SM456 O xecution of data logger and the memory card. N: execution by the values in SR902. W A. B. C. SR453 D. E. F. G H. hen an error occurs in the memory card, the error codes are stored here. 16#005D: no memory card installed 16#005E: an error occurs when the memeory card is initialized 16#005F: the path is incorrect or the file does not exist 16#0060: cannot create the default folder 16#0061: the memory space is insufficient 16#0062: the memory card is write protected . 16#0063: an error occurs when the data is written into the file 16#0064:
the data cannot be read from the memeory card