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MELSEC-Q
4 HARDWARE SPECIFICATION OF THE CPU MODULE
4 HARDWARE SPECIFICATION OF THE CPU MODULE
4.1 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
(Function for setting the scan timer to fixed
settings)
0.5 to 2000 ms (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
——
Program memory
(Drive 0)
112 kbyte 240 kbyte 496 kbyte 1008 kbyte
——
Memory card (RAM)
(Drive 1)
Capacity of loading memory cards(2Mbyte max.)
Memory card (ROM)
(Drive 2)
Installed memory card capacity
(Flash card: 4 Mbyte max., ATA card: 32 Mbyte max.)
For memory capacity,
refer to Section 7.1.
Standard RAM
(Drive 3)
64kbyte 128kbyte
5 256kbyte 3
——
Standard ROM
(Drive 4)
112 kbyte 240 kbyte 496 kbyte 1008 kbyte
——
Memory
capacity
CPU shared memory
4
8 kbyte
——
Program memory 28 60 124 252 1
——
Memory card (RAM) 256
——
Flash card 288
——
Memory
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 that can be executed for one program by the High Performance model QCPU with the
parameters stored in another drive is calculated with the following expression.
(Program size) - (File header size (default: 34 steps))
Refer to the High Performance model QCPU User's Manual (Function Explanation, Program Fundamentals) for details on the program
size and file.
3: The memory capacity of the Q12HCPU or Q25HCPU whose first five digits of serial No. are "02091" or earlier is 64K bytes.
(Refer to Section 2.3 for the way to confirm the serial No.)
4: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.
5:The memory capacity of the Q02HCPU or Q06HCPU whose first five digits of serial No. are "04011" or earlier is 64K bytes.
(Refer to Section 2.3 for the way to confirm the serial No.)
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