Files – Juniper Systems JS600 User Manual
Page 19
Operating System Page 3-3
Files
The FieldBook has four types of files as described below:
❏ Data Files: Where your data are stored. Data files are divided into a three-dimensional
matrix of fields identified by the page, line, and column number. Data can be written into
a data file from the keyboard or an external sensor.
❏ Format Files: Contain the configuration for data files, including the number of columns
per line, the number of lines per page, column headings, and data types for each column.
❏ Polycode Program Files: Contain programs written in Polycode, the FieldBook's unique
programming language.
❏ System Program Files: Special files supplied by Juniper Systems. These files are primarily
used for specialized functions. For example, a system file is called to return the time from
the real-time clock.
File Names
A filename can be any string of ten or fewer ASCII characters. Numbers and blanks may be
leading or embedded in the string.
Examples:
TREE.DAT
TREE.FMT AB CD EF 123ABC TREE$
Passwords
You can protect your files against accidental deletion with a password. To do this, include a
slash (/) in the filename. Everything following the slash is the password. The filename,
counting the slash and the password, may not exceed ten characters.
Example:
TREE.D/123 (TREE.D is the filename and 123 is the password)
You can edit a file with a password without supplying the password, however, you must
supply the password to erase it. (You need to remember your file passwords since there is
no way to display them!)
Hiding Files
You can hide a file by giving it a name that begins with @ (
FieldBook). A hidden file will not show up in the file directory unless it was the file most
recently opened. To edit or transmit a hidden file, key in the filename, including the @.
When you are finished with the file, you can hide it again by briefly opening and closing
another file so it will no longer be the last file opened.
Example:
@DATA.PGM (this file will not show up in the file directory)
Number of Files
The maxinum number of files that will fit in the FieldBook directory is 255.