Mitsubishi Electric MELSEC iQ-F FX5 - 20.7 Sizes of Files Used for the Memory Dump Function; Capacity of the memory dump setting file; Capacity of the memory dump file

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20 MEMORY DUMP FUNCTION
20.7 Sizes of Files Used for the Memory Dump Function
20.7 Sizes of Files Used for the Memory Dump Function
This section shows the sizes of files used for the memory dump function.
Capacity of the memory dump setting file
The capacity of the memory dump setting file varies depending on the length of the save file name. The following formula is
used for the calculation:
• Capacity of memory dump setting file = (((Number of characters of save file name
*1
 2 bytes + 1201 bytes (fixed)) + 3)  4)
*2
 4
*1 Except for the period and extension.
*2 The remainder is discarded.
Capacity of the memory dump file
The capacity of the memory dump file is given by the total of the following items:
• Capacity of memory dump file = Volume of header + Volume of data of program file name
*1
+ Volume of device data +
Volume of local device data
*1
*1 Only when BL\S (step relay with block specification) is collected.
Volume of header
The volume of header is given by:
• Volume of header = 1088 bytes (fixed)
Volume of data of program file name
Volume of data of program file name is given by the total of the following items. Only when BL\S (step relay with block
specification) is collected, this data is created in the memory dump file.
• Volume of data of program file name = 16 bytes (fixed) + (Number of programs  (2 bytes (length of program file name) +
130 bytes (program file name))
Volume of device data
The volume of device data is given by the total of the following items. Note that this data is always created in the memory
dump file regardless of the settings of CPU parameters.
• Volume of device data = 520 bytes (fixed) + Volume of collected device data
■Volume of collected device data
[FX5S/FX5U/FX5UC CPU modules]
The volume of collected device data is given by the following:
• Volume of collected device data = (Total number of points of bit devices  8) + (Total number of points of word devices  2)
+ (Total number of points of word devices  4)
[FX5UJ CPU module]
The volume of collected device data is 116702 bytes (fixed).
Volume of local device data
The volume of local device data is given by the total of the following items. Only when BL\S (step relay with block
specification) is collected, this data is created in the memory dump file.
• Volume of local device data = 16 bytes (fixed) + (Number of programs  4 bytes) + Volume of local device contents
• Volume of local device contents = 580 bytes (fixed) + Volume of collected local device data
*1
*1 The total of volume which is given by calculating the number of points of S (step relay) which is assigned to each block of BL0 to BL31
of the SFC program by the following volume of block data.
Volume of block data = ((the number of points of S (step relay) which is assigned to block + 15)  16)  2