Issue
Alarms stop being routed to the Sigma Server after an extended period of computer inactivity. All alarms will start to register on the Sigma Server once a user accesses any point in the Sigma System Manager.
Environment
Sigma version 4.04 (build 3.41.14)
Windows XP
Cause
The Sigma Server computer network interface card Power Management was set to 'Allow the computer to turn off this device to save power'.
Resolution
The power management setting 'Allow the computer to turn off this device to save power' for the network interface card needs to be unchecked. This can be achieved by performing the following steps:
- Select the properties of the Local Area Connection physically connected to the Sigma network.
- On the 'General' tab, there is a field that says 'Connect using:'. Click on 'Configure' to configure your network card.
- In the Network card properties, go to the 'Power Management' tab and uncheck 'Allow the computer to turn off this device to save power.'