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2. Performance Specifications
2.1 CPU Module Performance Specifications
2.1.1 AnNCPU Module Performance Specifications
Table 2.1 shows the memory capacities of the CPU modules and the performance
of their devices.
Table 2.1 Performance Specifications
Performance
Item
A1NCPU A2NCPU A2NCPU-S1 A3NCPU
Control system
Stored program, repeated operation
I/O control mode
Refresh / direct mode selectable
Programming language
Language dedicated to sequence control.
(Combined use of relay symbol type, logic symbolic language and
MELSAP-II(SFC)*1)
Sequence
instructions
26
Basic
instructions
131 132
Instruction
(types)
Application
instruction
103 107
110
Processing speed
(Sequence instruction)
(
µ
sec/step)
Direct mode
: 1.0 to 2.3
Refresh mode
: 1.0
I/O points
256 points
(X/Y0 to FF)
512 points
(X/Y0 to 1FF)
1024 points
(X/Y0 to 3FF)
2048 points
(X/Y0 to 7FF)
Watch dog timer (WDT)
(msec)
10 to 2000ms
Capacity of installed memory cassette
Memory capacity
Max. 16k bytes
Max.448k bytes
Main
sequence
program
Max. 6k steps
Max.14k steps
Max. 30k steps
Program
capacity
Sub-sequence
program
Absent
Max. 30k steps
*1 The SFC language cannot be used with an A1NCPU.
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