AutomationDirect C-more EA9-T10CL, Hardware User Manual

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Chapter 2 - Specifications
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EA9-USER-M Hardware User Manual, 1st Ed. Rev. K
Minimizing Data Errors
To minimize data errors when logging data to external memory, consider the following:
• Do not turn off power to the
C-more
touch panel while the external memory device is being
accessed. The optional EA-AC power adapter is designed to protect external memory devices from
damage during power failure.
• Do not remove any external memory device with the device is being accessed by the
C-more
panel.
The following internal tags should be used to monitor, access and safely remove external
memory devices:
SYS SD1 WriteStatus
SYS SD2 WriteStatus
SYS USB WriteStatus
SYS Copy LogToSD1
SYS Copy LogToSD2
SYS Copy LogToUSB
SYS SD1 Eject
SYS SD2 Eject
SYS USB Eject
SYS SD1 ReadyToUse
SYS SD2 ReadyToUse
SYS USB ReadyToUse
• Be sure to backup the memory device at regular intervals.
• If you suspect the memory device is bad, you may want to use a PC to re-format the device, or use a
known good memory device.
• The number of times the memory device can be written to is limited. Consequently, logging
frequently will may shorten the service life of the memory device. Using slower sample rates will
increase the life of the device.
Monitoring Available Memory
Each external memory device can be monitored and events can be configured to alert the user
when available memory is approaching the maximum capacity of the external memory device.
The following internal tags allow external memory devices data to be monitored:
SYS SD1 TotalMemory
SYS SD1 FreeMemory
SYS SD1 UsedMemory
SYS SD2 TotalMemory
SYS SD2 FreeMemory
SYS SD2 UsedMemory
SYS USB TotalMemory
SYS USB FreeMemory
SYS USB UsedMemory
Refer to the C-more programming software online help files for additional information on
system tags and managing data logging devices.