The ISA-95 & Purdue models are ‘the’ reference architectures in OT: Simple and relevant for more than 30 years. You need to understand it to understand OT.
Thanks for the post! I just wonder why you place the batch management software in the Level 3 while S88 identified as Level - 2 in S95? Aveva batch management software consist batch execution(control), scheduling the batch, recipe manager, modelling the batch and also batch historian. Which one of this feature will be an MES?
Some companies have their MES in L3 and then add an additional layer they call an Internal DMZ at label it L3.5 to host data exchange interfaces and other systems you want to have close to the business network.
Thanks for the post! I just wonder why you place the batch management software in the Level 3 while S88 identified as Level - 2 in S95? Aveva batch management software consist batch execution(control), scheduling the batch, recipe manager, modelling the batch and also batch historian. Which one of this feature will be an MES?
There is indeed some room for interpretation.
Some companies have the execution software in L2
Some companies have their MES in L3 and then add an additional layer they call an Internal DMZ at label it L3.5 to host data exchange interfaces and other systems you want to have close to the business network.
We have a more in-depth article on MES published a few weeks ago you can find here: https://itotinsider.substack.com/p/lets-talk-manufacturing-execution