Horner APG XL4 OCS - Manual (Page 38)

CH.10 MAN0964-01-EN
June 29, 2012 Page 38 of 122
9.3 Micro SD File System
The Micro SD Memory slot uses the PC-compatible FAT32 File System. This means that a PC, with a
Micro SD-compatible card reader, can read files that have been written by the XL4 OCS and can write
files that can be read by the XL4 OCS.
However, the XL4 OCS does not support long filenames, but instead implements the 8.3 filename format.
This means that all file and directory names must consist of up to 8 characters, followed by an optional
dot, and an optional extension with up to 3 characters.
Directories and sub-directories can be nested up to 16 levels deep as long as each pathname string does
not exceed 147 characters.
9.4
Using the Removable Media Manager
The Removable Media Manager is an interactive XL4 OCS screen that performs the following functions:
a. Display number of total and free K bytes
b. Browse file and directory lists
c. Delete files and directories
d. Format a Micro SD card
e. Load and save application programs
f. View screen capture bitmaps
The Removable Media Manager can be accessed via the System Menu or by using Cscape to place a
Removable Media Manager object on an application graphics screen.
Figure 9.3 – Removable Media Submenu
9.5
Using Removable Media to Log Data
Using Read and Write Removable Media function blocks, an application ladder program can read and
write XL4 OCS register data in the form of comma-delimited files, with a .CSV extension. These files are
compatible with standard database and spreadsheet PC programs. In addition, an application ladder
program can use Rename and Delete Removable Media function blocks to rename and delete files.