Argox PA-20 Basic Programming Manual - Manual (Page 76)

PT-Basic Programming Manual Ver. 1.00 75/143
3.15 File manipulation commands
3.15.1 Standard Commands
Access mode string Meaning
r Opens file for reading operation only. Error will be returned
if target file does not exist.
r+ Opens existing files for both reading and writing operations.
Error will be returned if target file does not exist.
w+ Create a file and open it for both reading and writing. If
target file does exist, current contents are destroyed.
OPENIN
Purpose： To open (r mode) a file and get the file for further
processing.
Syntax： F% = OPENIN filename$
Example： FilePath$="C:\DATA\Test.DAT"
fileID%=OPENIN FilePath $
Description： F% is an integer variable to assigned to the result.
F% Meaning
0 Open file fail.
Other Open successfully.
It returns the file handle.
filename$ is a string variable indicating the file path.
In case of error, open will return an integer value of 0. You
can use the GET_FILE_ERROR command to get the file
error code. Possible error codes and their interpretation are
listed below:
GET_FILE_ERROR Meaning
1 Filename is a NULL string.
6
 Can't create file because the
maximum number of files
allowed in the system is
exceeded.
 File path error.