Appendix 7 Sizes Of Data Written To Standard Rom And Compact Flash Card; Appendix 7.1 Size Of Data Written To Standard Rom Drive; Appendix 7.2 Size Of Data Written To Compact Flash Tm Card - Mitsubishi MELSEC-Q Series User Manual

APPENDIX
Appendix 7 Sizes of Data Written to Standard ROM and Compact Flash

Appendix 7.1 Size of data written to standard ROM drive

Size of data written to standard ROM
drive per day ( 1)
Appendix 7.2 Size of data written to Compact Flash
Size of data written to Compact Flash
card per day ( 1) ( 2) ( 3)
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This section explains how to calculate the sizes of data written to the standard ROM
TM
and Compact Flash
The size of the data written to the standard ROM drive per day can be calculated as
shown below.
= (LS
1
+ (CPES
1 Only the loggings which storage location is set to the standard ROM are counted.
LS : Size of logging No.n data written to the logging file at one time (Refer to Appendix 7.3.)
n
LN : No. of writes of logging No.n per day (Refer to Appendix 7.3.)
n
CPES: Size of data written to the event history file in the case where a CPU event occurs (Refer
to Appendix 7.4.)
CPEN: No. of CPU events occurred per day
TGES: Size of data written to the event history file in the case where a tag event occurs (Refer
to Appendix 7.4.)
TGEN: No. of tag events occurred per day
TMES: Size of data written to the event history file in the case where a time/interval event occurs
(Refer to Appendix 7.4.)
TMEN: No. of time/interval events occurred per day
FSS: Size of data written to the file by FTP server function (Refer to Appendix 7.6.)
FSN: No. of writes to the file by FTP server function per day
The size of the data written to the Compact Flash
shown below.
TM
= ((LS
1
+ ((WFS + 1024) WFN) + ((FCS + 1024)
1 Only the loggings which storage location is set to the Compact Flash
2 Round up the underlined parts to multiples of 512.
Example) When LS
3 When writing data to a file, data of 1024 bytes are generally rewritten due to file system
update.
LSn: Size of logging No.n data written to the logging file at one time (Refer to Appendix 7.3.)
LNn: No. of writes of logging No.n per day (Refer to Appendix 7.3.)
WFS: Size of data written to the file using the WFWRITE instruction (Refer to Appendix 7.5.)
WFN: No. of file writings using the WFWRITE instruction per day
FCS: Size of data written to the file using the FTPGET instruction (FTP client function) (Refer
to Appendix 7.5.)
FCN: No. of file writings using the FTPGET instruction (FTP client function) per day
FSS: Size of data written to the file by FTP server function (Refer to Appendix 7.6.)
FSN: No. of writes to the file by FTP server function per day
card.
) + ... +(LS
LN LN )
1 n n
CPEN) + (TGES
TM
card
) + ... + ((LS
+ 1024) LN
1
= 600, LS = 1024
n n
TM
Card
Formula
TGEN) + (TMES TMEN) + (FSS
TM
card per day can be calculated as
Formula
+ 1024) LN )
n n
FCN) + ((FSS + 1024)
TM
MELSEC-Q
FSN)
FSN)
card are counted.
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