LSIS XBE-DC08A, Руководство пользователя, Страница: 292 / 1284

B
a
s
ic
Chapter 5 Datalog Function
5-79
5.7.4 Diagnosis Function
Data log provides SD memory diagnosis function.
SD memories that do not comply with the following cannot be used. Data log function will not be excuted when such
memories are connected.
(1) FAT32 File System Diagnosis
☞
The memory should be formatted using the FAT32 format, to allow for file saving.
Files will not be saved if it is formatted using other formats.
(2) SD Memory Internal Data Diagnosis
☞
When a memory used in another data log module is connected, the system compares the data in the file, and regards
it as a different memory if the data do not match. In this case, file save does not progress further. When this happens,
format the memory before connecting it.
(3) SD Memory LOCK Status Check
☞
If the lock slide switch on the top left side of the SD memory is set to Lock, an error occurs when connecting the SD
memory for the first tie and the data log function does not run.
(4) Memory Diagnosis after Power On/Off
☞
In case a sudden power off or reset stops data saving into the SD memory while data log is running, the system
diagnoses the file system and then proceed with file diagnosis for data log execution. The time required increases as
the number of folders and files increase, up to 15 seconds. During this time, the data log function cannot be used.
Caution
Since sudden power off may cause file system / file damage or saving of abnormal data.
Therefore, make sure to execute STOP flag or PLC STOP when trying to stop data log function, so as to ensure normal data
saving.