Edit advanced information for an IDAS

To edit advanced information

1. In the Operations Control Management Console tree, expand a server group and then expand a server.

2. Expand Configuration Editor, expand System Configuration, and then expand Data Acquisition.

3. Right-click the name of the IDAS to edit, and then click Properties. The Properties dialog box appears.

4. Click the Advanced tab.

   

5. Mark the IDAS Enabled check box to allow the system to use the IDAS.

6. Configure store-and-forward options:

   • In Min Store/Forward Duration, specify the minimum duration, in seconds, for the IDAS to function in store-and-forward mode. The IDAS functions in store-and-forward mode for this length of time even if the condition that caused IDAS to function in store-and-forward mode no longer exists. The maximum duration is 3600 seconds, and the minimum is 0 seconds.

   • In Buffer Count, specify the number of 64 KB buffers pre-allocated for buffering data. This number may need to be increased to accommodate high data rates.

   • In Store/Forward Free Space, specify the minimum amount of free disk space, in megabytes, at which IDAS stops collecting data in the store-and-forward buffer

   • Select Compression Enabled to allow data compression.

   • In Connection Timeout, specify amount of time, in seconds, that the Configuration service attempts to communicate with an IDAS for configuration/reconfiguration. If this timeout elapses, the Configuration service assumes that the IDAS connection has been dropped. This number may need to be increased to accommodate slower networks.

     For more information on store-and-forward, see IDAS store-and-forward capability.

7. Configure the IDAS for autonomous startup:

   • Pull Configuration is enabled by default when a new IDAS is configured. When enabled, the IDAS retrieves its configuration information from the Historian server automatically.

   • If the IDAS is configured for store/forward, the IDAS will start itself autonomously even if the Historian is unavailable. In Autonomous Startup Timeout, specify the amount of time, in seconds, that the autonomous IDAS should wait for configuration commands when started by the Configuration service before going to the autonomous mode. This timeout may need to be increased only if you have a large number of IDASs configured as autonomous on a slow network.

     For more information on autonomous startup, see IDAS autonomous startup.

8. To revoke an IDAS connection and generate a new token, click the Generate new connection token button. This adds a new encrypted connection token in the database. This token is used to allow the remote IDAS to connect to Historian.

9. Click OK.