How do I set up my terminal to receive a file download across the serial port?

When you run an HMI application, the question of whether or not to overwrite the existing

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configuration displays. When you select to overwrite the

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configuration on a terminal (or on the desktop), you are initializing

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with a new set of drivers and devices. If the

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configuration in the project does not contain a DF1 Serial Driver, the serial port will not be initialized, and you will not be able to communicate across it.

For example, assume you created a project that did not contain a DF1 Serial Driver, you downloaded that project to a CE terminal, and when presented with the overwrite question, you select Yes. This means now you cannot download subsequent projects across the serial port. Since you did not have a Serial Driver in the project,

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did not initialize the serial port when it consumed the new configuration during the overwrite process.

There are two ways to ensure your terminal is prepared to receive a download across the serial port.

If you have a serial cable from your desktop computer to the terminal, you can now add an auto-configured Serial-DF1 driver to your desktop configuration. The auto-configure logic detects the presence of the terminal and matches its settings accordingly. You are now ready to download across the serial port. Note that because the DF1 driver’s auto-configure logic is a ”try once and then fail out” body of logic, you must have the serial cable connected when the system executes its auto-configure logic.