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Service Manual
Third edition, June 1997
3.29 Disconnect LU
Use this function when there is a need to change the LU-
database in the Work Station when there is no communica-
tion with the Level Unit.
When you select Disconnect LU on the Service Menu, the
question “Continue without communication with Level
Unit? OK or Cancel” will be displayed.
3.30 The Communication-Window
Select Communication from the Service-menu to open the
Communication-window. This window shows the communi-
cation on the serial ports to the I/O Box.
Select which serial port to view by hitting the Serial port
activity-button. A list is displayed with the available ports.
Communication data such as baud rate, parity bits, data bits
and stop bit is shown in the white box in the window.
There are also two indicators showing send and receive
activity. These are similar to the LEDs on the Interface boards
in the I/O Box, see chapter 4. However, in the half-duplex
setting, the Send-LED on the Interface boards echoes all the
received information. It can therefore be quite difficult to see
if the board is really sending anything other than the ques-
tions it is receiving. In this window, the Send-indicator does
not echo the received signals. Therefore, when the Send-
indicator blinks, the interface board is really transmitting
data.