Mitsubishi MELSEC-A A2ASCPU-S1 User Manual

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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.
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) 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.
• A2USHCPU-S1,A2USCPU-S1,A2ASCPU-S1,
A2ASCPU-S30................................................. 256k bytes
• A2USCPU,A2ASCPU.......................................64k bytes
Table 4.1 Memory capacity
Item Setting unit Memory capacity
Change
into a
ROM
Remark
Parameter, T/C set value
– 4k bytes (fixing)
Usable
The parameter and T/C set
value occupy 4k bytes.
Main
program
Sequence program 1k step
(Main sequence program capacity) 2k
bytes
–
Microcomputer
program
2k bytes (Main microcomputer program)k byte
The microcomputer program
area is dedicated to the SFC.
MELSECNET/10
*1, * 2
network parameter
– (Network module) 4k bytes
One network module occupies
up to 4k bytes.
Expanded comment 64 points
(Number of extension comments/
64+1)k bytes
Not
usable
When the expanded comment
capacity is set, the system
occupies 1k byte.
File register 1k point
(Number of file register points) 2k
bytes
–
Comment 64 points ((Number of comments)/64+1)k bytes
When the comment capacity is
set, the system occupies 1k
byte.

Mitsubishi MELSEC-A A2ASCPU-S1 Specifications

General

Brand	Mitsubishi
Model	MELSEC-A A2ASCPU-S1
Category	Controller
Language	English