Appendix 7.3 Size Of Data Written To Logging File; Appendix 7.4 Size Of Data Written To Event History File - Mitsubishi Electric MELSEC Q Series User Manual

APPENDICES

Appendix 7.3 Size of data written to logging file

LS
LN
Logging cycle is 1
second or more.
TAGL = Component 1 character string length ( 2) + Comma (1) + Component 2 character string
LS
Logging cycle is less
LN
than 1 second.
(High-speed logging)
TAGL = Component 1 character string length ( 2) + Comma (1) + Component 2 character string
( 1)

Appendix 7.4 Size of data written to event history file

CPES = Data character string length (19) + Event number (2) + Status (11) + CPU name (1 to 16)
TGES = Data character string length (19) + Event number (2) + Status (11) + Tag name (1 to 16) +
Size of data written
to event history file
TMES = Data character string length (19) + Event number (2) + E-mail sending (8) + Comma/Line
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The size of data written to the logging file can be obtained from the following.
= Time character string length (19) + Comma (1) + TAGL + Line feed (1)
n
= LT /INT
n n n
length ( 2) + Comma (1) + ... + Component n character string length ( 2) + Line feed (1)
= (Time character string length (19) + Comma (1) + TAGL + Line feed (1)) / INT
n
= LT
n n
length ( 2) + Comma (1) + ... + Component n character string length ( 2) + Line feed (1)
1 When high-speed logging is used, data are stored to the CompactFlash card once per
second.
2 The character string length of the component is based on the data type set in the
component setting as shown below.
Data type
Single word
Double word
Real number
Bit
String
(Example) When a normal logging setting is made to collect 64 components whose data
type is "Single word";
LSn = 19 + 1 + (18 + 1)
LS : Size of logging No.n data written to the logging file at one time
n
LN : No. of writes of logging No.n per day
n
LT : Operating time (seconds) of logging No.n per day (In the case of constant operation, LTn
n
= 86400)
INT : Logging cycle (seconds)
n
For the high-speed logging, the unit needs to be changed from milliseconds to seconds.
Example) For the interval of 100 milliseconds, INTn = 0.1 (seconds)
TAGL: Character string length of tag data
The size of data written to the event history file can be obtained from the following.
+ Operation status (12) + E-mail sending (8) + Comma/Line feed (7)
Component name (1 to 16) + Condition (2) + Trigger value (1 to 47) + Component value
(1 to 47) + E-mail sending (8) + Comma/Line feed (10)
feed (4)
CPES: Size of data written to the event history file in the case where a CPU event occurs
TGES: Size of data written to the event history file in the case where a tag event occurs
TMES: Size of data written to the event history file in the case where a time/interval event occurs
Formula
Data length
1 to 18
Depends on the specified device value, display form,
1 to 21
and operator specification.
1 to 47
1
1 to 32 Depends on the specified number of characters.
64 + 1 = 1237 bytes
Formula
MELSEC-Q
n
Remarks
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