Program File Configuration - Mitsubishi Electric MELSEC-Q Series User Manual

6 FILES HANDLED BY BASIC MODEL QCPU

6.6 Program File Configuration

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(1) Program File Configuration
(a) Program files consist of a file header and an execution program.
File header
Execution program
(b) As shown below, the size of a program stored in the Basic model QCPU
includes all the above components.
1) File header: The file name, file size, and file creation data, etc., are
stored in this area.
The file header size is 34 to 35 steps (136 to 140 bytes).
(Default:34steps)
2) Execution program: The created program is stored in this area.
1 step is 4 bytes.
(2) The size of the program displayed by GX Developer
During programming at the GX Developer, the program size (the total of the file
header size and the number of created program steps) is displayed as the
number of steps as shown below.
During programming, the size of the program created is displayed.
34 steps
(by default)
Areas are reserved
in units of 4 bytes
"Number of steps used" display
MELSEC-Q
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