Datalog Function - Regular Save

Regular Save refers to saving data at main task interval or a set interval. Data is saved at the interval without considering the status of the data. This method is most useful for collecting data at fixed intervals. Datalog functionality works with %M, %I, %Q, %U, %K or %F addresses and variables that reference them.

  • The scan interval save method saves the data after the end of the main task cycle.

  • The data collection is accumulated in the motion controller’s internal buffer.

  • When a certain amount of data is stored, the data will be saved into SD memory.

  • If the set interval is too short or the data to collect is too large, a scan watchdog timer error may occur and the XMC will go to STOP mode.

After configuring a regular save datalog, The datalog needs to be enabled in the project code if not using auto logging.

  • Each of the 16 available datalogs has its own enable flag.

  • If you want to use auto logging, follow section 3 first then proceed to section 4.

Variable Name Memory Address Data Type Description
_DL00_Enable %KX8224 BOOL Group 00 Enable Flag 1: Operation, 0: Stop
_DL01_Enable %KX8225 BOOL Group 01 Enable Flag 1: Operation, 0: Stop
_DL02_Enable %KX8226 BOOL Group 02 Enable Flag 1: Operation, 0: Stop
_DL03_Enable %KX8227 BOOL Group 03 Enable Flag 1: Operation, 0: Stop
_DL04_Enable %KX8228 BOOL Group 04 Enable Flag 1: Operation, 0: Stop
_DL05_Enable %KX8229 BOOL Group 05 Enable Flag 1: Operation, 0: Stop
_DL06_Enable %KX8230 BOOL Group 06 Enable Flag 1: Operation, 0: Stop
_DL07_Enable %KX8231 BOOL Group 07 Enable Flag 1: Operation, 0: Stop
_DL08_Enable %KX8232 BOOL Group 08 Enable Flag 1: Operation, 0: Stop
_DL09_Enable %KX8233 BOOL Group 09 Enable Flag 1: Operation, 0: Stop
_DL10_Enable %KX8234 BOOL Group 10 Enable Flag 1: Operation, 0: Stop
_DL11_Enable %KX8235 BOOL Group 11 Enable Flag 1: Operation, 0: Stop
_DL12_Enable %KX8236 BOOL Group 12 Enable Flag 1: Operation, 0: Stop
_DL13_Enable %KX8237 BOOL Group 13 Enable Flag 1: Operation, 0: Stop
_DL14_Enable %KX8238 BOOL Group 14 Enable Flag 1: Operation, 0: Stop
_DL15_Enable %KX8239 BOOL Group 15 Enable Flag 1: Operation, 0: Stop

Note: This example shows configuring Datalog Group 0. Other groups can be configured in the same manner.

Step Action
1

In the Project window, double-click on Internal Parameter è Data Log.
2

Set Group Settings value to Use to allow Group 0 to be used for datalog functionality.
3

Double-click on the Data collection mode entry to configure the saving method.
4

Select Data logging (General) and Configure the logging to use the desired method of saving data. Press OK when done.

Event Based Saving: Saves data at every time event that is configured.

Time Interval: Saves data at the time interval configured.

Main Task: Saves data at the main task interval time.
5

Double-click on the Save Settings entry to configure the save settings. Press OK when done.
6

Configure Buffer size to determine how much data is accumulated before it is written to the CSV file.
7

Setup the Data 0 section to add a datapoint to the datalog function. There are 64 datapoints available to be logged. This example will just show configuring Data 0.
8

Double-click in the Device area of Data 0 to choose variable to log. This variable must have a %M, %I, %Q, %U, %K or %F address to be used in the datalog functionality.

9

Choose your variable that has a supported memory address. This example shows a global UDINT variable with a %MD address.
10

Add program code to enable or disable _DL00_Enable to control the datalog Group 0 if not using auto data logging. Skip to step 11 if using auto logging.

11

After completing the data logging, the log files will be saved in XMC-E08A\MAC<macaddress>\LOG\GROUP00 directory of the SD memory card.

  • If connected to the XMC over USB, access File transfer from Online menu -> Reset/Clear è Memory Cardè File Transfer.

  • Or Safely remove the SD memory card from the XMC and access from your computer.

Auto Logging Setup

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

LM307