Can someone explain how to setup the very basic polling I require? here's what I need - read from remote site A for 5 seconds - read from remote site B for 5 seconds - read from remote site C for 5 seconds - read from remote site D for 5 seconds - read from remote site E for 5 seconds - ... repeat What I've done based on my interpretation of the polling driver help is polling all five sites continuously. I need to poll them1 at a time. here's what I've done - site A - Poll Group Name = reservoirs - Station Number = 1 - Scan Interval = 5 - Delay After Scan Interval = 0 - External Trigger = constant - site B - Poll Group Name = reservoirs - Station Number = 2 - Scan Interval = 5 - Delay After Scan Interval = 0 - External Trigger = constant - site C - Poll Group Name = reservoirs - Station Number = 3 - Scan Interval = 5 - Delay After Scan Interval = 0 - External Trigger = constant - site D - Poll Group Name = reservoirs - Station Number = 4 - Scan Interval = 5 - Delay After Scan Interval = 0 - External Trigger = constant - site E - Poll Group Name = reservoirs - Station Number = 5 - Scan Interval = 5 - Delay After Scan Interval = 0 - External Trigger = constant