Project Downloader and UniDownloader

In addition to downloading projects via U90 Ladder, you can install application files in local or remote controllers without using U90 Ladder. These applications are compressed into .d90 files, which cannot be opened by U90 Ladder or Remote Access.

Program Downloader

To install a .d90 file into a PLC, you can use the Program Downloader, which is a utility included in Remote Access. For more information regarding the Program Downloader, check the Remote Access Help.

UniDownloader Designer

The UniDownloader package enables you to build a complete, compressed project including a .d90 file and an OS, and send it anywhere to be installed in a PLC using a standalone downloader. Your end user will be able to download the application, but will not be able to view or modify it. The tool can download applications and OS.

The package comprises the UniDownload Designer, located on the Tools menu, and the UniDownloader, available as a separate download from www.unitronics.com.

To learn about UniDownloader, click on the Tools menu in VisiLogic, U90 Ladder, or Remote Access, select UniDownloader Designer, and then access the UniDownloader Designer Help.

Creating .d90 files

.d90 files are complete applications in a compressed format. You can create them either:

When you download programs to a controller.
1. Click Download, then click the Select All button.
2. Click the Advanced button and Check Create Download file.
3. A dialog box opens, enabling you to select a Save location. Select a location, then click OK, a .d90 file is created.
By selecting Project> Create Download File, and following the on-line instructions.

Notes ♦	Both the PLC used to make the download file (source), and the M90 that is installed with the .d90 file (target) should be installed with the same OS version.
♦	To avoid errors in the .d90 file, the Download process must run smoothly, without being aborted or affected by PC faults.
♦	Database values can also be stored in the .d90 file.
♦	U90 Ladder cannot be used to download .d90 files.

Checking the integrity of the Download file

Although you do not need to have the Downloader installed on your PC in order to create .d90 files, you need to install it in order to check .d90 files.

After you have created the .d90 file, save the U90 Ladder project from which it was downloaded.
Open a new, empty project and download it--using the Select All option--to the PLC.
Start Remote Access,and select the desired PLC model.
Click the Project Downloader which is located on the Remote Access Tools menu.
Using the Downloader, navigate to the .d90 file and download it into the PLC.
Reopen the original U90 Ladder project used to create the .d90 file.
Select Verify from the Controller menu; the Verify process will compare the U90 project in your PC with the .d90 application installed in the PLC.
If the Verify process is successful, the .d90 file is valid.