KB83266
Published: December 10, 2015
Revision: 2.0

Full FTP directory may not be returned by the control engine


Applies To:

Versions Affected:

Problem affects versions: R7.0a through R9.4b
Problem is fixed in version: PAC Firmware R9.4c

Resolved In Version:

Problem is fixed in version: PAC Firmware R9.4c


Symptoms:

If a directory on the controller contains a lot of files, sending the PAC Control FTP "dir" command may return only a partial listing.

Workaround:

To avoid this problem, you can limit the number of files in a directory and limit the lengths of file names. Otherwise, if you have firmware R9.3e or higher you can do the following:
Send the "dir" command to the FTP driver and include ",TableName" after it. The directory listing will be placed into that table, one directory entry per table element. This method will give you the full list of files, but you should be aware of the following things:

  • The compiler can't check the command to verify that you've entered a valid table name; if the included name is invalid, the command will return a -28 (Object Not Found), but that means you won't find out until runtime.
  • A table passed as a parameter to a subroutine can't be used, but a table local to the subroutine will work.

Resolution:

Opto 22 has resolved this issue.

Questions?

Contact: Opto 22 Product Support.
Phone: 800-835-6786 or 951-695-3080
Email: support@opto22.com


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