Mitsubishi Electric Melsec A Series, Руководство пользователя

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2.1.2 AnACPU Module performance specifications
Table 2.2 shows the performance specifications of the AnACPU module. Since the
valid range for setting each device differs, use caution when a previous system FD,
peripheral devices or an AnACPU compatible system FD are used.
Table 2.2 CPU Module Performance Specifications
Performance
Item
A2ACPU A2ACPU-S1 A3ACPU
Remarks
Control system Stored program, repeated operation
I/O control method Refresh method
Instructions to enable
partial direct I/O are
available.
Language dedicated to sequence control
Programming language Combined use of relay symbol type, logic symbolic
language and MELSAP-II(SFC)
Processing speed
(Sequence instruction) A2A (S1) : 0.2 to 0.4
µ
s/STEP
A3A : 0.15 to 0.3
µ
s/STEP
Sequence
instruction
25 types
Basic,
application
instruction
233 types 235 types Instruction
Dedicated
instruction
200 types
Constant scan (program
start at specified
intervals)
Can be set between 10 msec and 190 msec in 10
msec increments Set in special register
D9020.
Memory
capacity
Max. 448k bytes Max. 768k bytes
Memory
capacity
and
memory
type
Memory
type
(Memory
cassette
type)
A3NMCA-0 to A3NMCA-56
A3NMCA-0 to
A3NMCA-56
*A3AMCA-96
Refer to Section 7 for
detalls on memory
cassette.
Battery back up.
POINT
* Memory cassette A3AMCA-96 is compatible with CPUs of the following
versions and later versions.
•
A3ACPU Version BM
•
A3ACPUP21 Version BL
•
A3ACPUR21 Version AL
Example)
B M
Software
version
Hardware version