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Chapter 5 Data Log Function
5-92
5.11 Data Processing Time
This section describes the data storage time of data log function.
The processing times described in this section do not represent absolute values, but actual measurement of each example.
The actual processing time varies depending on the scan time, volume of collected data, format of the collected data, type and
storage of SD memory and number of files in the SD memory.
5.11.1 Impact on Scan
Scan time fluctuates depending on the data log function parameters. Also, the time is affected by the SD memory connected.
The following measurements were taken using memories made by SanD, Transcent
☞
Scan Time Variation = within 30% of max scan time (when scan time is 10ms or longer)
Ex 1) In case of setting data log for a 1ms scan program, the scan time may increase up to 6ms.
Ex 2) In case of setting data log for a 10ms scan program, the scan time may increase up to 13ms.
Ex 2) In case of setting data log for a 100ms scan program, the scan time may increase up to 130ms.
5.11.2 Save Performance by Scan time
The following figures are save performance measurement by save intervals and number of set data saved. These
measurements represent relative values. The actual vales may vary depending on the program, setting parameter and SD
memory applied. You can use it as a reference when using data log function.
(1) Set Condition
Data processing time was measured under the following conditions.
Item
Description
Note
Scan Time
1ms / 10ms
Buffer Size
500kByte
Data Collection Time
4 Word/ 10ms
Data Log
Setting
Sampling Method Designated Interval
Data
M Area, Type Word
CSV Output
Time, Index information included
File Save
16MByte
SD MEMORY CARD
SanDisk 2G
(2) Results:
Measurement taken under the conditions above showed the following results. The table below does not represent
absolute values: in actual use, please consider the scan time and settings.
Number of Devices
Unit
4 WORD
(4 WORD * 1 Group)
8 WORD
(8 WORD * 1 Group)
32 WORD
(32 WORD * 1 Group)
64 WORD
(32 WORD * 2 Group)
320 WORD
(32 WORD * 10 Group)
1ms
1.5
1.7
1.6
1.7
1.6
ms
10ms
3.5
3.4
3.5
3.2
3.7
Содержание XBE-DC08A
Страница 124: ...Main Chapter 1 Configuration and Operation Mode of Programs 1 27 1 Memory block diagram ...
Страница 155: ...Main Chapter 2 CPU Function 2 29 Notice For more details on the monitor refer to the XG5000 manual ...
Страница 504: ...Position Chap 6 Commands 6 61 6 11 Function blocks related to Servo Drive ...
Страница 512: ...Positioning Chapter 7 Program 7 8 manual operation 7 1 4 Parameter and Operation Data Setting 1 Parameter Setting ...
Страница 644: ...Positioning Chapter 8 Functions 8 91 ...
Страница 727: ...Positioning Chapter 9 Positioning Error Information Solutions 9 13 ...
Страница 861: ...Special Chapter 1 Embedded Analog 1 39 5 Select View Variables Comments Variables and comments are both displayed ...
Страница 1206: ...Appendix 2 Dimension App2 1 Appendix 2 Dimension Unit mm 1 CPU Type XEC DN32U 2 Positioning Type XEC DN32UP ...
Страница 1207: ...Appendix 2 Dimension App2 2 2 Analog Type XEC DN32UA ...
Страница 1209: ...Appendix 2 Dimension App2 4 XBE DC08A XBE DC16A XBE TN08A XBE TN16A XBE DR16A XBE RY08A ...
Страница 1210: ...Appendix 2 Dimension App2 5 4 Extension Cnet I F Module XBL C41A XBL C21A ...