About rlao

Hi, Due to the single-threaded nature of the SNMP driver, we have backlog issues on our SCADA system when several of our SNMP devices goes offline, because the driver is stuck waiting on timeouts for each individual SNMP point for those offline devic…View more

Posted by: rlao in Geo SCADA Expert Forum

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Hi all, Is there a way to build an SQL query to find all objects of a particular class that aren't part of a template instance? For example, in the image below I would only be interested in logic objects like 'Custom Logic' and not 'LogicLevelSimulat…View more

Posted by: rlao in Geo SCADA Expert Forum

Find more articles tagged with: english scada SCADA app SCADA software SCADA tutorial Telemetry and SCADA

Hi all, When I attach a time profile to an alarm limit on an analog point, it replaces the property field with some 'overflow' dummy value. However, the alarm limit does follow whatever the current value is in the profile even though you don't see th…View more

Posted by: rlao in Geo SCADA Expert Forum

Find more articles tagged with: english scada SCADA app SCADA software SCADA tutorial Telemetry and SCADA

So this has been an issue I'm trying to tackle for a good part of the year, and one I've tried a few solutions for but ultimately none of which I've been completely satisfied with yet. So I'm asking for some guidance from those of you more experience…View more

Posted by: rlao in Geo SCADA Expert Forum

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I'm trying out the persistence out of alarm feature to help reduce alarm flooding from noisy signals. For a digital point, if you have SeverityType of the alarmed state set to 'Alarm', is it required to have the SeverityType of the healthy state set …View more

Posted by: rlao in Geo SCADA Expert Forum

So the 'Max' and 'Min' historic aggregates have a 'Max Last' and 'Min Last' version where if the sample period only contains a single value, the aggregate will also grab the last preceding value before the sample period. Is there an equivalent way to…View more

Posted by: rlao in Geo SCADA Expert Forum

I have a navigation script that is failing on a particular ViewX client because the script is calling App.OpenWindowOnHead on Head 3, but that particular client only has 2 heads configured (one less monitor than all the other clients). I'm trying to …View more

Posted by: rlao in Geo SCADA Expert Forum

If you browse the events on a SCADAPack E Outstation object, you can see when a 'Download Configuration Changes' is requested, queued and pushed out to the RTU. However, it offers no record of when the actual config change came about, only when that …View more

Posted by: rlao in Geo SCADA Expert Forum

On DNP3 points there is the 'Disable Alarm Reporting' pick action next to 'Disable Alarms' which tells the outstation to stop generating events for that point. Our operators have on occasion gotten those two actions mixed up and accidentally disabled…View more

Posted by: rlao in Geo SCADA Expert Forum

Hi, We have a single pump template that caters to two different types of VSD's that both talk via the built-in SCADAPack Modbus Scanner. The only difference between those two types of VSD's is the Modbus mapping is different. This difference is curre…View more

Posted by: rlao in Geo SCADA Expert Forum