Mitsubishi Electric Q Series Operation Manual page 23

Mistubishi Electric Q Series PLC Ladder Monitor Operation Manual
Searching Drives for Data
Follow the procedure outlined below to search for the ladder program's drive, and display only drives that
contain files.
• Sequence program search
PG -> SRAM -> FLASH -> Internal RAM -> Internal ROM -> CACHE
• Comment file search
PG -> SRAM -> FLASH -> Internal RAM -> Internal ROM -> CACHE -> CF
[CACHE]
- For a Sequence Program (cf. "Related Units" - "Related GP Units")
When the Ladder Program is read out from "PG", "SRAM", "FLASH", "RAM", or "ROM", the data
("MEL_QP.CCH") is stored in [LADMON] folder of the CF card. With "CACHE", the ladder program stored
in the CF card is read out and displayed. Since no communication is being performed with the PLC, this read-
out is very fast. If CACHE is not available, the word "CACHE" will not be displayed. The ladder logic infor-
mation shown by CACHE is for the previously read-out PLC ladder logic data. If the PLC's ladder logic data
has been changed or updated, or if the PLC has been changed, be sure to read out the latest ladder logic data
from the PLC
* Be sure the CF card used has 2MB or more free space.
- For a Comment file
When the comment file is read out from "PG", "SRAM", "FLASH", "RAM", or "ROM", the data
("***.QCD") is stored in [LADMON] folder of the CF card. With "CACHE", the comment file stored in the
CF card is read out and displayed.
* Be sure the CF card used has 2MB or more free space.
[CF]
- For a Comment file only
Comment file data (*.WCD) of a project created using the Mitsubishi Electric Corporation programming tool
"GX Developer" is read out from a CF card. Since readout of PLC data is not performed, this data is read out
quickly. Prior to performing this, be sure to create the [LADMON] folder in the CF card and copy the com-
ment file (*.WCD) to this folder.
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