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MELSEC-Q
6 HIGH PERFORMANCE MODEL QCPU FILES
(3) Drive Number
(a) The High Performance model QCPU uses drive numbers to control
standard RAMs, standard ROMs, and memory cards. GX Developer
specifies a selected memory (standard RAM, standard ROM or memory
card) to read/write parameters and program files from to the High
Performance model QCPU. There is no need to specify the drive number
when using the GX Developer.
(b) The table below shows the drive numbers used to specify a selected
memory (program memory, standard RAM, standard ROM or memory card)
when using a sequence program. The drive number must be used to
specify a selected memory when the read/write is made through access
from a serial communication module.
Memory
Drive Number
Program memory
0
Standard RAM
3
High Performance model
QCPU built-in
Standard ROM
4
Memory card (RAM)
SRAM card
1
Flash card
2
Memory card (ROM)
ATA card
2
(4) Memory Capacity and Formatting
The following table shows the size of a memory of the High Performance model
QCPU and whether to format a memory.
Q02CPU
Q02HCPU
Q06HCPU
Q12HCPU
Q25HCPU
Whether to Format
Standard RAM
64 kbyte
128 kbyte 1
256 kbyte 1
2
Program memory
28 k steps
(112 kbyte)
28 k steps
(112 kbyte)
60 k steps
(240 kbyte)
124 k steps
(496 kbyte)
252 k steps
(1008 kbyte)
2
Standard ROM
112 kbyte
112 kbyte
240 kbyte
496 kbyte
1008 kbyte
3
SRAM
card
Q2MEM-1MBS: 1 Mbyte
Q2MEM-2MBS: 2 Mbyte
Required.
(Use the GX Developer
or a personal computer)
Flash card
Q2MEM-2MBF: 2 Mbyte
Q2MEM-4MBF: 4 Mbyte
Not required.
Memory
card
ATA card
Q2MEM-8MBA: 8 Mbyte
Q2MEM-16MBA: 16 Mbyte
Q2MEM-32MBA: 32 Mbyte
Required.
(Use the GX Developer
or a personal computer)
1: The memory capacity of the Q12HCPU and Q25HCPU with the upper five digits of the serial No. being
"02091" or earlier is 64 kbyte.
The memory capacity of the Q02HCPU and Q06HCPU with the upper five degits of the serial No. being
"04011" or earlier is 64 kbyte.
2: If the memory is in the initial status or it is unstable due to low voltage of the battery (Q6BAT), formatting
automatically starts upon power-on or resetting of the PLC. However, format with GX Developer before
starting operation.
3: The standard ROM is used in ROM formation of the program memory and therefore formatting is
unnecessary for it.
Содержание QCPU (Q Mode)
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