EZT-570S User Manual
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Figure 7-6 Historical Plot Legend
When pressing the Legend button to toggle between the historical plot and the legend
screen, it may take several seconds for the plot to become visible depending on the size of
the data file and number of channels selected to plot.
When finished viewing the historical plot, you must press the “Return” button to exit the
historical data viewer and return to the main data log screen.
7.4 USB File Transfer
A quick note about file storage; data and setup files (programs, alarm log and audit trail files) need
some maintenance every now and then. After a period of time, storage devices fill up and files
require backup or file deletion when no longer needed. The “Utilities” section of the EZT-570S
provides all the functionality required for maintaining the internal SD memory card. The internal SD
card should not be removed from the EZT-570S interface. Any change to SD directory structure
(moving or deleting files with a PC) may cause the EZT-570S to stop operating and a new SD card
will need to be ordered. Never move or delete the directories unless using the provided file utilities
functions.
The data log files, programs, alarm log and audit trail directories are saved to the internal
SD card (not the USB memory stick device) plugged into the EZT-570S. Never unplug the
SD card when the ET-570S is powered up or loss of data may result.
The USB file transfer screen allows the user to copy or erase files from the internal SD card.
Complete file directories for all file types can be copied to the USB memory stick and erased from the
internal SD card. The current status for file functions is displayed for the operator during copy/delete
operations. The EZT-570S also allows automatic programs to be imported from the USB memory
stick. Programs must be exported from another EZT-570S to the memory stick first, before this
function can be used.
All file transfer functions can be used while data logging is running. If the operator needs to
back up or delete files from the system, a large number of files could take considerable time
to backup and delete from memory. The file transfer screen will be locked during file
transfer so plan the timing appropriately when access to other screen functions is not
required. When data logging is running, the current data log file will not be copied or
deleted while using the file transfer functions. This protects the current file and makes sure
that the data file is complete before being copied and cannot be deleted from memory while
it is still in operation.
Summary of Contents for EZT-570S
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