191
File Memory Section 5-1
3. One example of the CPU Bus Unit settings would be the Data Link Tables.
Refer to the operation manuals for specific Units for other setup data.
Directories
It is possible to access files in subdirectories with CS/CJ-series PLCs, but
Programming Consoles can access files only when they are in the root direc-
tory. The maximum length of a directory path is 65 characters. Be sure not to
exceed the maximum number of characters when creating subdirectories in
the Memory Card with a program such as Windows.
File Sizes
The size of files in bytes can be calculated with the equations in the following
table.
Note Calculate the number of steps in the program file by subtracting the available
UM steps from the total UM steps. These values are shown in the CX-Pro-
grammer’s Cross-Reference Report. Refer to the CX-Programmer User Man-
ual for details.
File type File size
Data files (.IOM) (Number of words × 2) + 48 bytes
Example: Entire DM Area (D00000 to D32767)
(32,768 words × 2) + 48 = 65,584 bytes
Data files (.TXT or .CSV) The file size depends upon the number of delimiters and
carriage returns being used. The delimiter code is one
byte and the carriage return code is two bytes.
Example 1: Non-delimited words, no carriage return
123456789ABCDEF012345678 occupies 24 bytes.
Example 2: Delimited words, carriage return every 2 fields
1234,5678↵
9ABC,DEF0↵
1234,5678↵
occupies 33 bytes.
Example 3: Delimited double words, carriage return every
2 fields
56781234,DEF01234↵
56781234↵
occupies 29 bytes.
Program files (.OBJ) (Number of steps used × 4) + 48 bytes (See note.)
Parameter files (.STD) 16,048 bytes
To Next Page
Loading...
Need help?
General
