you can manage the alarm buffer either from the control terminal, or from the lcd.

    from the control terminal

    you can display the active alarms from the supervisory terminal.

    →to display the active alarms:

    1 type dsp alm.

    the terminal displays up to 100 alarms stored in the buffer, listing for each alarm its number, alarm itself, its state (on or off) and the time when the last change in its state occurred.

    →to clear the alarm buffer:

    2 type clr alm or clr alm/a or dsp alm/ca.

    for more details, see description of the corresponding command in section 4.4, "fcd-2 supervision language".

    from the lcd

    you can view the on-state alarms stored in the alarm buffer, on the front panel lcd display, and delete the alarm messages from the buffer when no longer needed. this procedure is explained below.

    when the top row shows alarm buffer, the second row displays the following information:

    3 during normal operation, the second row shows empty (no alarm messages)

    4 if the alarm buffer contains on-state alarms, the lcd shows scroll in the left-hand field of the second row, and clear in the right-hand field.

    →to display the alarms:

    1. bring the cursor to scroll.

    2. press enter.

    now you can scroll between the on-state alarms stored in the alarm buffer. to interpret the alarm messages displayed in the second row, refer to table 5-1.

    to correct the reported problem, perform the corrective actions in the given order,until the problem is resolved.

    → to delete the alarms:

    1. display alarm buffer in the first row.

    2. bring the cursor in the second row to clear.

    3. press enter to clear the on-type alarms and the alarm history in the buffer.

    if no on-state alarms are present, the second row should show empty.

    this section is equivalent to clr alm/a command (see section 4.4, "fcd-2 supervision language").

    now you can scroll between the on-state alarms stored in the alarm buffer. to interpret the alarm messages displayed in the second row, refer to table 5-1.

    to correct the reported problem, perform the corrective actions in the given order,until the problem is resolved.

    → to delete the alarms:

    1. display alarm buffer in the first row.

    2. bring the cursor in the second row to clear.

    3. press enter to clear the on-type alarms and the alarm history in the buffer.

    if no on-state alarms are present, the second row should show empty.

    this section is equivalent to clr alm/a command (see section 4.4, "fcd-2 supervision language").