Configure No Reply Alarm Suppression

Follow this procedure to enable No Reply alarm suppression for remotes on a particular connection.

The Line Error Suppression tab in the connection Row Edit dialog box is opened through the connection table listing in the Advanced Database Editor (ADE). For general information on ADE, and further information on the connection table, refer to the Advanced Database Editor (ADE) Administrator documentation and RealTime tables, respectively.

To configure no reply alarm suppression

1. Navigate to the Line Error Suppression tab in the connection Row Edit dialog box.

   

2. Select Enable Line Error Suppression.

3. In the Failed Remote Threshold field, enter the number of remotes that must fail consecutively before the system generates a No Reply alarm.

   For example, assume the threshold is "3". If two remotes fail to reply during separate, consecutive polls, the system does not issue a No Reply alarm. Instead, it:

   • Marks the line as suspect.

   • Creates an event.

     When the third, consecutive remote fails, the system then:

   • Marks the line as failed.

   • Creates an event indicating a) line failure and b) the time of the last reply.

   • Generates an alarm indicating line failure.

     Important: If you should change the Failed Remote Threshold after the system generates an alarm indicating line failure, the system marks the line as suspect. As soon as a remote replies, the line returns to normal.

4. To include only onscan remotes in the no reply count, select Count on-scan remotes only against failure threshold.

   Scenario 1: Count on-scan remotes only against failure threshold not selected.

   Assume that a) there are five remotes on the connection line, b) the Failed Remote Threshold is "3", and c) there is one failed, offscan remote. When the second, consecutive remote fails to respond during a poll, the system generates an alarm indicating line failure.

   Scenario 2: Count on-scan remotes only against failure threshold selected.

   Assume that a) there are five remotes on the connection line, b) the Failed Remote Threshold is "3", and c) there is one failed, offscan remote. When the third, consecutive remote fails to respond during a poll, the system generates an alarm indicating line failure.

5. Select Enable Line Failure Alarms to have the system generate an alarm when the number of "No Reply" remotes reaches the configured threshold.

6. Select Generate Persistent Alarms if desired.

7. Select the Line Failure Alarm Severity.

8. Select Enable Return To Normal Alarms to have the system generate such an alarm when the line returns to normal operation.

9. Select the Return To Normal Alarm Severity.