OEE calculation in Ignition

[Anjali_manogna]

How do we calculate OEE in ignition gateway is there any way for OEE calculation in ignition

[shabir.ahmed]

Hi There are many ways to calculate. My approach is to get tag values from PLC and store it event wise. e.g. PO change, Hour, Days etc. OEE can be calculated at the same interval by script and stored as History tag or transaction group/DB bridge. Later you can query the data to display.

It can also be calculated using the formula applied by script on performance data. The question is very general you can share more details and many people would be helping here in this forum.

[Anjali_manogna]

Yes sure. We get it by writing the formula in the script and creating the tag details independently Is there any other way like fetching the availability performance and quality from the database in ignition gateway ?

[Transistor]

@Anjali_manogna

Is there any other way like fetching the availability performance and quality from the database in ignition gateway?

Is the information available in the gateway? How have you stored it? Machine run time / availability is usually easy to record and calculate. Rate should be easy to calculate from the run time and production counts. Quality you can get if the machine has reject counters but if the operator rejects parts as well (after visual inspection, for example) then you need to input that data into the database.

@Anjali_manogna

... and creating the tag details independently.

You'll need to explain that. Most of us would calculate OEE from a database, not from a tag.

[Matrix_Engineering]

OEE Sepasoft vs In house Development

We are currently investigating OEE development and are considering using Sepasfot OEE modules Without having the experience we are looking to justify using the OEE package vs development from scratch and need to present to our leadership team (non-technical) for justification. Looking for shared experiences, methods of justification ( i.e reduced development time, sounds good but how do we explain this?) What other advantages have been found?

Note my OEE works are all Vision, none of my customers have asked me to do it in Perspective, yet.

[Sandip_Tiwari]

I have data tags coming from controller which will provide me real time data values and i want to perform some calculation on new tag just like OEE.
Please let me know that how to perform calculation in Ignition

1. Expression
2. Properties
3. Tag binding
   where i have to write the python code ?

[Transistor]

What tags have you got (post their names) and what calculation do you want to perform to calculate OEE?

[Sandip_Tiwari]

When I tried to calculate availability using auto operation time and power on time in Ignition Designer, I couldn't retrieve the power on time data directly from Ignition. Instead, I had to manually input the power on time. How can I fetch the power on time value directly from Ignition Designer for my calculations, rather than using a fixed value in my code?

[Ujwal_Wankhede]

Use Expression Structure Binding to access multiple data

[Sandip_Tiwari]

For the calculation of OEE , We need Three Things :

1. Performance
2. Availability
   3.Quality
   so the formulae is OEE = Performance *Availability * Quality