Chapter 11 Datalog Function
(a) Forcibly removing the SD memory from motion controller during writing or reading of data collected by motion
controller may damage the file system of the memory card. Therefore, please remove SD memory after disabling
the datalog function using the command flag. If SD memory is removed during read/write of the SD memory, the
SD STATE LED flashes at 500ms interval.
The following figure shows the sequence of disconnecting or exchanging SD memory card.
(b) Power off or reset during datalog run may cause abnormal data saving. Also, the file system may be damaged
and not recognized the SD memory and the files.
(4) Using the cover to prevent SD memory removal
Please set the direction correctly when connecting the SD memory to the motion controller.
If you want to remove the SD memory, press the SD memory deeply to remove the memory.
In addition, please use the cover to prevent the SD memory from being removed due to vibration.
11.9.3 Micro SD Memory Usage Capacity
Up to 32GB memory can be mounted on the motion controller, but only about 80% of 8GB can be used. Even if the
SD card with more than 8GB is installed, the capacity corresponding to about 80% of 8GB, not 80% of the total
capacity can be used, and therefore it can no longer be used when more than 6.4GB is used. This is to prevent
excessive increase of SD memory access time when the data is stored.
Caution
1. SD memory state may affect main task time and saving performance. SD memory should be formatted
before use.
2. When using the SD memory for a long time, formatting on a regular basis is required to maintain
performance.
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