Global Scan Settings option

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Use this option to define the global scan settings the DCE server will use for communication with monitored SNMP or Modbus devices. 

In both SNMP and Modbus Device Communication Settings > Global Scan Settings, the next device scan time is based on the Scan end time plus the Scan interval by default.

Data will be displayed in sensor history at intervals that equal the amount of time the scan takes plus the scan interval. This helps optimize network traffic, particularly when monitoring large numbers of devices.

To display data at the configured interval, select From scan start time.

Scan interval (minutes)

Select how much time will pass between DCE server scans for status information at a monitored SNMP or Modbus device when the Device Settings option in the Device Communication Settings display has Default selected for Scan Interval (minutes).

Note: Setting the scan interval below the default value of five minutes can adversely affect performance when the Data Center Expert server is managing a large number of devices.

Scan interval offset

Select whether the next device scan time is based on the Scan end time plus the Scan interval (the default) or at Scan start time (the configured Scan interval).