Installing and Removing Communication Interfaces

You can install or remove communications hardware by using the Install/Uninstall Interfaces dialog box shown in Figure 5. On the left side of this dialog box is a list of hardware types that you can install. On the right side is a list of currently installed hardware types. If you are using the Windows NT 4.0 operating system, there is a “Resources” button under the Installed list box.

Installing the Hardware:

To install the hardware, follow these steps:

1.In the Setting the PG/PC Interface dialog box (shown in Figure 4), press the “Select” button to access the Install/Uninstall Interfaces dialog box, shown in Figure 5.

2.From the Selection list box, select the hardware type that you have. A description of your selection is shown in the lower window.

3.Click the “Install” button.

4.When you are finished installing hardware, click the “Close” button. The Setting the PG/PC Interface dialog box appears, and your selections are shown in the Interface Parameter Assignment Used list box (see Figure 4).

Removing the Hardware:

To remove hardware, follow these steps:

1.Select the hardware from the Installed list box on the right.

2.Click the “Uninstall” button.

3.When you are finished removing hardware, click the “Close” button. The Setting the PG/PC Interface dialog box appears, and your selections are shown in the Interface Parameter Assignment Used list box (see Figure 4).

Figure 5 Install/Remove Interfaces Dialog Box

Special Hardware Installation Information for Windows NT Users

Installing hardware modules under the Windows NT operating system is slightly different from installing hardware modules under other Windows versions. Although the hardware modules are the same for either operating system, installation under Windows NT requires more knowledge of the hardware that you want to install. Windows 95, 98, and Me automatically try to set up system resources for you; however, Windows NT does not. Windows NT provides you with default values only. These values may or may not match the hardware configuration. However, these parameters can be modified easily to match the required system settings.

When you have installed a piece of hardware, select it from the Installed list box and click the “Resources” button (Figure 5). The Resources dialog box appears (Figure 6). The Resources dialog box allows you to modify the system settings for the actual piece of hardware that you installed. If this button is unavailable (gray), you do not need to do anything more.

At this point you may need to refer to your hardware manual to determine the setting for each of the parameters listed in the dialog box, depending on your hardware settings. You may need to try several different interrupts in order to establish communication correctly.

Figure 6 Resources Dialog Box for Windows NT

Note:

If you are using Windows NT and a PC/PPI cable, no other master can be present on the network.

See Also:

Communications Timeout