Emerson Process Management 5300 manual Specifying the COM Port, To set the COM port buffers

Reference Manual

00809-0100-4530, Rev BA July 2009

Rosemount 5300 Series

Specifying the COM Port

Figure 5-8. Communication Preferences.

To set the COM port buffers

If communication is not established, open the Communication Preferences window and check that the correct COM Port is selected:

1. From the View menu select Communication Preferences in RRM.

2.Select the HART tab.

3.Make sure that HART communication is enabled.

4.Check which COM port the modem is connected to.

5.Choose the COM Port option that matches the actual COM Port on the PC that the transmitter is connected to.

For Windows 2000/XP the COM port Receive Buffer and Transmit Buffer need to be set to 1. To set the COM port buffers:

1.In the MS Windows Control Panel open the System option.

2.Choose the Hardware tab and click the Device Manager button.

3.Expand the Ports node in the tree view.

4.Click the right mouse button on the selected COM port and choose Properties.

5.Select the Port Settings tab and click the Advanced button.

6.Drag the Receive Buffer and Transmit Buffer slides to 1.

7.Click the OK button.

8.Restart the computer.

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