11 DATA LOGGING FUNCTION
11.6 Steps Until the Collected Data Is Saved
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Storage file
The CPU module creates a subfolder ("storage file container folder") under the file storage folder and writes storage files to
that storage file container folder. One storage file container folder can contain up to 256 storage files. When the files contained
in the current storage file container folder reach the maximum number, the CPU module creates a new storage file container
folder at the time of next storage file switching and begins writing storage files to that new folder. The number of files that can
be contained in one file storage folder is configurable within the range of 1 to 65535.
The base folder name of a storage file container folder is an eight-digit (hexadecimal) number. This number
matches the lowest of the serial numbers of the files contained in the directory. Date and time stamps can be
appended to the folder name.
■Storage file name
The following describes the storage file name. The base file name is an eight-digit (hexadecimal) serial number.
*1
*1 The same number is not used in the same file storage folder. If storage files have already existed when a new storage file is created by
switching a stack file to a storage file, the number added one to the largest serial number among existing storage files becomes the
name of the new storage file.
The following extra information can be added to the base file name. Up to 64 characters (including an extension and the
period) can be a file name, combining any of the following.
*2 When using an above formatted string as it is, enclose a character string with double-quotation marks (" ") to add it.
Example: When adding the character string "address" to the file name, "address" address_00000001.bin can be used.
However, when a character string that contains double quotation marks (" ") is specified, the maximum number reduces by the number
of the double quotation marks.
A type of date and time information to be added can be selected from the following.
Extra information Details on extra information Remarks
Simple setting Storage folder name Name of a folder where storage files are stored An underscore (_) is added
between each information.
Date Date information in YYYYMMDD format
• YYYY: Year (four digits)
• MM: Month (two digits)
• DD: Day (two digits)
Time Time information in hhmmss format
• hh: Hour (two digits)
• mm: Minute (two digits)
• ss: Second (two digits)
Optional setting String Any string
*2
Date Date information added by specifying the following strings
• YYYY: Year (four digits)
• YY: Year (two digits)
• MM: Month (two digits)
• DD: Day (two digits)
Day of week Day of the week information added by specifying the following strings
• ddd: Day of week (three digits)
(Sunday: Sun, Monday: Mon, Tuesday: Tue, Wednesday: Wed,
Thursday: Thu, Friday: Fri, Saturday: Sat)
Time Time information added by specifying the following strings
• hh: Hour (two digits)
• mm: Minute (two digits)
• ss: Second (two digits)
Add date type Description
Date to establish file switching condition Date and time information when the storage file switching condition is met is added.
File creation date Date and time information when the file is created as a stack file (when the previous file switching is executed) is
added.
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