Mitsubishi Electric Q01UCPU User Manual page 49

File type
System data file for CPU module data
backup/restoration
Device data file for CPU module data
backup/restoration
Operation history file
*1 The value will be adjusted by the system so that the total number of bytes of PLC parameters and network parameters
becomes multiple of four.
*2 The value will be adjusted by the system so that the total number of bytes becomes multiple of four.
*3 These are default values. (Values differ depending on the parameter setting).
*4 After the decimal point of a value obtained by a division part in the formula is rounded up.
*5 For the Q02UCPU, Q03UDCPU, Q04UDHCPU, or Q06UDHCPU whose serial number (first five digits) is "10011" or
earlier, apply the number of execution programs.
Remark
For a calculation example of memory capacity, refer to Page 49, Section 2.1.3 (4) (c).
(3) Program file structure
A program file consists of a file header, execution program, and reserved area for online change.
Program file structure
File header
Execution program
Reserved area for
online change
The sizes of the programs stored in the CPU module program memory are the total of above three areas.
Item
File header
Execution program
Reserved area for
online change
64 + (6+ (a × 34)) + (6 + (a × (336 + (12 × b) + (12 × c))) + (6 + (d × 198)) + 22 + 5440 + (6 + e ×
6418))
• a: Sampling trace registration status
• b: Number of word device points of sampling trace information
• c: Number of bit device points of sampling trace information
• d: Data logging registration status
• e: Module error collection setting status
• For the status of a, d, and e, put "1" when they are registered/set and put "0" when they are not
registered/set to obtain the above calculation formula.
64 + 2 + 4 + 72 + (N × 8) + 11328 + ((a + (b  16) + (c × 2  16)) × 2)
• N: Number of target devices (for the timer, retentive timer, and counter, the contact and coil are
counted as one device.
• a: Number of word device points
• b: Number of bit device points (except for the timer, retentive timer, and counter)
• c: Number of bit device points (the timer, retentive timer, and counter)
The file size depends on the parameter setting. (1K to 1024K bytes)
37 steps (default)
(39 steps (Q50/Q100UDEHCPU))
500 steps
This area stores data such as the name, size, and created date of files. The file header size
ranges from 25 to 41 steps (100 to 164 bytes) depending on the setting made in the Device tab of
the PLC Parameter dialog box.
This area stores the created program.
This area is used when the number of steps is increased after writing data in the RUN status.
(Default: 500 steps (2000 bytes) The setting value can be changed in the "Program Detail Setting"
dialog box. (It can be changed while online change is performed.) After the online change is
complete, remaining number of steps for this area is displayed.
CHAPTER 2 APPLICATION OF PROGRAMMING
File size (unit: byte)
These areas are reserved
in increments of file size units.
Page 43, Section 2.1.3
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Description
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47
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