Rosemount 5401, Reference Manual

Page: 68 / 180

Reference Manual
00809-0100-4026, Rev FA
July 2009
Rosemount 5400 Series
5-14
Specifying the COM Port
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.
Figure 5-8. Communication
Settings.
2. Make sure that HART communication is enabled.
3. Check which COM port is connected to the modem.
4. Choose the COM port option matching the actual COM port on the PC
that is connected to the transmitter.
To set the COM port
buffers
The COM port Receive Buffer and Transmit Buffer need to be set to 1 by
doing the following:
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. Reboot the computer.
Specifying Measurement
Units
Measurement units for data presentation in RRM can be specified when the
RRM program is installed. Units can also be changed as follows:
1. Choose the
Application Preferences
option from the
View
menu.
2. Select the
Measurement Units
tab.
3. Choose the desired units for
Length
,
Level Rate
,
Volume
and
Temperature
.