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MELSEC-Q
3 PERFORMANCE SPECIFICATION
3
3. Performance Specification
The table below shows the performance specifications of the CPU module.
Performance Specifications
Model
Item
Q02CPU Q02HCPU Q06HCPU Q12HCPU Q25HCPU
Remark
Control method Repetitive operation of stored program
I/O control mode Refresh mode
Direct I/O is possible by
direct I/O specification
(DX
, DY )
Programming language
(Sequence control dedicated language)
Relay symbol language, logic symbolic language,
MELSAP3 (SFC), MELSAP-L, Function block
LD X0 0.079 s 0.034 s
Processing speed
(Sequence instruction)
MOV D0 D1 0.237
s 0.102 s
Total number of instructions
360
(excluding intelligent function module dedicated instructions)
Constant scan (ms)
(Function for setting the scan timer to fixed
settings)
0.5 to 2000 (configurable in increments of 0.5 ms)
Set parameter values to
specify
Program 2
capacity
Program memory
(Drive 0)
28k step 60k step 124k step 252k step
Memory card (RAM)
(Drive 1)
Capacity of loading memory cards(2Mbyte max.)
For memory capacity,
see Section 7.1.
Memory card (ROM)
(Drive 2)
Installed memory card capacity
(Flash card: 4 Mbyte max., ATA card: 32 Mbyte max.)
For memory capacity,
see Section 7.1.
Standard RAM
(Drive 3)
64kbyte 128kbyte 256kbyte
Standard ROM
(Drive 4)
112 kbyte 240 kbyte 496 kbyte 1008 kbyte
Memory
capacity
CPU shared memory
3
8 kbyte
Program memory 28 60 124 252 1
Memory card (RAM) 256
Flash card 288Memory
card
(ROM)
ATA card 512
Standard RAM 2
Only one file register
and one local device
Maximum number
of stored files
Standard ROM 28 60 124 252
Standard ROM number of writings Max. 100000 times
Number of I/O device points
8192 points (X/Y0 to 1FFF)
Number of devices
usable on program
Number of occupied I/O points
4096 points (X/Y0 to FFF)
Number of points
accesible to actual I/O
modules
1:124 is the maximum number of programs that can be executed on High Performance model QCPU.
2:The maximum number of sequence steps (for one program) for which the parameters are stored in another drive and executed with the
High Performance model QCPU can be calculated with the following expression.
(Program size) - (File header size (default: 34 steps))
Refer to the High Performance model QCPU (Q Mode) User's Manual (Function Explanation, Program Fundamentals) for details on
the program size and file.
3:The CPU shared memory is not latched. The CPU shared memory is cleared when the power is turned on to the PLC or when the CPU
module is reset.
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