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MELSOFT
7 MANAGEMENT OF DATA IN THE PLC CPU
7.1.5 Writing/reading device memory data
This section describes the operations for performing write/read of device memory data
to/from PLC.
(1) Example of menu-driven operation for write to PLC
1) In the PC side window, choose the device memory file
to be written.
("Device memory" indicating the data type can also be
the target of write.)
2) Click the [Edit] - [Copy] menu.
(You may also right-click, choose the [Copy] menu,
press the
button, and click the Ctrl + C keys.)
3) Choose the memory in the PLC side window.
4) Click the [Edit] - [Paste] menu.
(You may also right-click, choose the [Paste] menu,
press the
button, and click the Ctrl + V keys.)
5) Click the Yes button in the write to PLC confirmation
dialog box.
Either of the following screens appears depending on
the target of write.
• When you performed write to other than
Program memory/Device memory (QCPU (Q
mode)) or to other than PLC RAM/Device
memory (QnACPU), set the number of file
register points. (When there are more than one
device memory file, their ranges are all the
same.)
• When you performed write to the ACPU or QCPU (A
mode), set write to device memory, write to file register
and its type (block No. 1 to 256 for Extension file
registers).