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Rutger10-Marble
10-Marble
May 10, 2021
Solved

OPC Alarms & Events or workaround

  • May 10, 2021
  • 1 reply
  • 4162 views

Dear All,

 

This question has passed before, but is there any connectivity solution between OPC Alarms & Events and ThingWorx 8.5 or 9.x in the meantime?

We need some alarms from our devices and would save a lot of work if we were able to use OPC AE.

 

Or maybe somebody has created a workaround?

 

Kind regards,

 

Rutger

Best answer by wcui
Hi Rutger, unfortunately this is not possible to connect Kepware OPC A&E to ThingWorx because for TW to ingest the data, an OPC A&E Client is required. 
In that case, you will have to develop your own A&E client and find a suitable way to bridge that into ThingWorx. 

1 reply

W
wcui16-Pearl
16-Pearl
May 13, 2021

Hi  Rutger

Can you give more details about OPC Alarms & Events and your use-case? 

Are you using Kepware to connect OPC device then forward PLC data to Thingworx(TW)?

 

As I know, TW supply Event and Alarm functions with thing where Kepware data were bound.

 

R
Rutger10-MarbleAuthor
10-Marble
May 13, 2021

Hi @wcui,

 

Thank you for your reply.

We use KEPServerEX for collecting data from our PLC's. KEPServerEX is connected with ThingWorx.

In general we have PLC's that generate there alarms within the PLC. This data is collected by the OPC als Booleans. Within Thingworx we use 'Alerts' to create an alarm and add it to the TW Alarmstream.

But there are also some additional values we want to alert, for example a temperature that is above x dgrC.

You could use the same Alert functionality of a Thing for this, but you can't use hysteresis to prevent unwanted on/off alarming.

 

Also we have another application we have to provide with some alarms. So it would be great if there is a way to use OPC A&E as a central alarm handling system.

 

Now we use Advanced Tags for generating these alarms with an hysteresis as a workaround, but OPC A&E is far more suitable for these kind of functionalities.

W
wcui16-Pearl
16-Pearl
May 26, 2022

Hi Rutger

Kepware supply OPC AE plug-in which support configuring alarms using device data and sends an event to OPC AE clients. Below is the manual, can you take a look?

https://www.kepware.com/en-us/products/kepserverex/advanced-plug-ins/alarms-events/documents/alarm-events-manual.pdf

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