
B
a
s
ic
Chapter 5 Data Log Function
5-84
5.9.3 Caution
Please pay attention to the following when using data log function with SD memory card.
(1) Power Off during SD Memory Writing
1) Power off or PLC reset during writing of data collected by high-performance XGB into the SD memory may damage
the file system of the memory card. Although PLC verifies the file system of the SD memory when applying electric
power to convert the damaged files into usable files, such restoration may not be possible depending on the level of
damage. When powering off PLC, please perform power off after verifying that the SD memory writing is not being
performed.
2) Power off or PLC reset during writing of data collected by high-performance XGB into the SD memory causes all
data saved in the buffer memory inside the buffer memory. Therefore, the data collected immediately before power
off may not have been saved properly. When powering off PLC, please perform power off after verifying that the SD
memory writing is not being performed.
(2) Time Required when Suspending SD Memory Writing
In cases of using K area flag to turn off the data log permission flag while data saving is in progress, all data collected
before reception of the relevant flag command are saved into the SD memory, and then the data log operation stops.
Therefore, a small time is required until the data log function actually stops. The stop progress can be verified using the
STOP PROGRESS flag in K area. The time required for data log stop varies depending on the volume of data collected.
When SD memory writing is complete, the data log STOP status flag value changes to 1.
(3) Removal of Memory Card during Read/Write in SD Memory
1) Forcibly removing the SD memory from PLC during writing or reading of data collected by high-performance XGB
may damage the file system of the memory card. Therefore, please remove SD memory after disabling the data log
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.
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 ...