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12 DEBUG FUNCTION
12.1 Memory Dump Function
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 + Volume of device data + Volume
of local device data + Volume of data of file register file name + Volume of file register data
■Volume of header
The volume of header is given by:
Volume of header = 1088 bytes (fixed)
■Volume of data of program file name
The volume of data of program file name 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 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 = 682 bytes (fixed) + Volume of collected device data
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)
■Volume of local device data
The volume of local device data is given by the total of the following items. Note that this data is not created in the memory
dump file unless local devices are set in the CPU parameters.
Volume of local device data = 16 bytes (fixed) + (Number of programs 4 bytes) + (Number of programs Volume of local
device contents)
■Volume of data of file register file name
The volume of data of file register file name is given by the total of the following items. Note that this data is not created in the
memory dump file unless a file register file exists in the device/label memory.
Volume of data of file register file name = 16 bytes (fixed) + (Number of file register files (2 bytes (length of file register file
name) + 130 bytes (file register file name)
■Volume of file register data
The volume of file register data is given by the total of the following items. Note that this data is not created in the memory
dump file unless a file register file exists in the device/label memory.
Volume of file register data = Number of file register files (148 bytes (fixed) + (Number of file registers 2))
Item Calculation method
Volume of local device contents 418 bytes (fixed) + Volume of collected local device data
Volume of collected local 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)
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