Memory Capacity Setting (For Main Program, File Register, Comment, Etc.) - Mitsubishi MELSEC-A A2USHCPU-S1 User Manual

4. CPU MODULE
4.2.2

Memory capacity setting (for main program, file register, comment, etc.)

The CPU modules has the following user memory (built-in RAM) as a standard.
• A2USHCPU-S1,A2USCPU-S1,A2ASCPU-S1,
• A2USCPU,A2ASCPU.......................................64k bytes
Parameters, T/C set value main program, MELSECNET/10 network parameters,
expanded comment, file register, and comment data are stored in the user memory.
(1)
Item
Parameter, T/C set value
Sequence program
Main
program
Microcomputer
program
*1, * 2
MELSECNET/10
network parameter
Expanded comment
File register
Comment
A2ASCPU-S30................................................. 256k bytes
Calculation of memory capacity
Determine the data types to be stored and the memory capacity with parameters
before using the user memory.
Calculate the memory capacity according to Table 4.1.
Table 4.1 Memory capacity
Setting unit
4k bytes (fixing)
–
(Main sequence program capacity) 2k
1k step
bytes
2k bytes (Main microcomputer program)k byte
(Network module) 4k bytes
–
(Number of extension comments/
64 points
64+1)k bytes
(Number of file register points) 2k
1k point
bytes
64 points ((Number of comments)/64+1)k bytes
Memory capacity
4 - 22
Change
into a Remark
ROM
The parameter and T/C set
value occupy 4k bytes.
–
Usable
The microcomputer program
area is dedicated to the SFC.
One network module occupies
up to 4k bytes.
When the expanded comment
capacity is set, the system
occupies 1k byte.
Not
–
usable
When the comment capacity is
set, the system occupies 1k
byte.