LSIS XGT Series - Datalog Performance; Data Processing Time; Save Performance by Main Task Interval

Chapter 11 Datalog Function
11-100
11.11 Datalog Performance
11.11.1 Data Processing Time
This section describes the data storage time of datalog 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.
11.11.2 Save Performance by Main Task Interval
The following figures are save performance measurement by main task 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 datalog function.
(1) Set Condition
Data processing time was measured under the following conditions.
Item Description Note
Main task Interval
1ms, 2ms, 4ms
Buffer Size
128kByte
Data Collection Time
4 Word/ 10ms
Datalog Setting
Sampling Method
Designated Main task Interval
Data
M Area, Type: Word
CSV Output
Time, Index information included
File Save
16MByte
SD Memory Card
Transcend 16G
(2) System configuration
The system for performance measurement was configured using the built-in function of motion controller.
Enet Communication,
Digital Input/Output,
Analog Input/Output
EtherCAT
Axis 2 servo system