Configure 1 minute polling in EcoStruxure IT Gateway

Starting with version 1.13 and newer, EcoStruxure IT Gateway can be configured to poll up to 25 devices at 1 minute instead of the normal 5 minute polling rate.

To select which devices will be polled at 1 minute:

• Log into the Gateway and click Devices.

• Click Edit polling interval… 

• Under Choose polling interval, select 1 minute.

• Select the devices you want to poll at 1 minute.

• Click Apply.

To revert back to the 5 minute polling rate, follow the same instructions, and choose 5 minutes instead.

Limitations

• Certain devices might not be able to poll at the 1 minute interval because the device requires more than 1 minute for a single complete poll. This is often the case when there are more than one device at an IP address, for example, an rPDU using Network Port Sharing (NPS).

  Note: For rPDUs using Network Port Sharing, the guest devices poll at the same rate as the host device. The Gateway application allows you to set the poll rate for guest devices, but it will have no effect.

• Although the Gateway allows a maximum of 25 devices to poll at 1 minute, it may not be possible to poll that many on your system. The practical limit depends on the total number of devices being polled, the amount of CPU and memory on your Gateway, and the protocols used.

  SNMPv3 is significantly slower than SNMPv1 and Modbus TCP. For more information, see Gateway System Requirements. 

  • Medium and large Gateway configurations (more than 8 CPUs and 8 GB RAM) had no issues with the maximum configuration of 25 SNMPv3 devices polling at 1 minute. In a small Gateway configuration, 10 out of 60 SNMPv3 devices can be polled at 1 minute.

  • The small configuration (4 CPUs and 4 GB RAM, which also applies to the EcoStruxure IT Gateway NUC  appliance, INNUC0119) can poll 10 out of 60 SNMPv3 devices at 1 minute.

Alarms

Setting devices to poll at 1 minute may trigger a Device Communication Alert alarm if the Gateway cannot poll the device at that rate.