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11
FUNCTIONS OF CONFIGURATION TOOL (MODULE SETTINGS)
(3) Trigger buffer usage amount
Specification method of the number of logging lines
Log data before and after the rising of trigger condition
Log data before trigger condition rises, while trigger
condition holds true, and after trigger condition falls
Example) When "Log data before trigger condition rises, while trigger condition holds true,
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11.5 Data Logging Setting
11.5.12 Number of logging lines
Settings cannot be configured which exceed the overall trigger buffer usage amount
on the high speed data logger module.
The overall trigger buffer usage amount is 8 megabytes (8388608 bytes).
The trigger buffer amount to be used can be found with the calculation formula below.
Trigger buffer usage amount per single logging = ((device count 2+40)(number of
lines +1)) 2
(a) Device points
The following table shows the device points of data types per single logging.
Data type
Bit
Word [signed]
Double word [signed]
Word [unsigned]
Double word [unsigned]
FLOAT [single precision]
FLOAT [double precision]
16bit BCD
32bit BCD
String
Raw
(b) Number of lines
The number of lines per single logging differs depending on the specification
method of the number of logging lines.
However, they are logged 100 lines or more for high speed data sampling and 30
lines or more for general data sampling.
and after trigger condition falls" is selected, for trigger logging with high speed
data sampling with the conditions below
(Conditions)
• Device: All 64 components are word [signed]
• Buffer size: 100 lines
(Trigger buffer usage amount and trigger buffer usage rate per single logging)
• Trigger buffer usage amount per single logging:
((64 1 2 + 40) (100 + 1)) 2 = 33936 bytes
• Trigger buffer usage rate:
33936 / 8388608
Device point
(Number of strings/2) points
(Binary size/2) points
Number of lines per single logging
Number of lines of before trigger + after trigger
0.4%
1 points
1 points
2 points
1 points
2 points
2 points
4 points
1 points
2 points
Total number of lines
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Troubleshooting
