Resource Transition Rules will add more detailed constraint modeling, down to single-resource and single-product. The transition rules enables the possibility to block resource changes depending on the previous or next operations (i.e. not only based on the current operation, but also where it comes from and is going to).
Transition rules also allow us to reserve extra equipment between operations in a route depending on which resource the operation is allocated to.
Apply transition rules when the physical equipment has limitations. In the process industry, it is very typical where liquid is pumped between tanks using physical pipe connections.
Example1: The size or complexity of a product limits an order to selected resources only
In the following example Fanuc handles cutting of very large and complex products. Only two welding operators are qualified for handling products from Fanuc, so it is only possible to go from “Fanuc” to “Andrew” or “Nick” (Peter and Poul are not allowed).
The transition rules are checked both ways, so if the welding operation is currently on Nick, Cincinatti cannot be selected for the cutting operation
Example 2: A pipe transfer line is needed when transferring the product between two tanks.
In the following example it is only possible to go from A-1 to B-1 and B-2 by using the pipe transfer line called Prop empty. So enter the name Prop empty in the “Path” setting.
When an operation in order G1234 goes from A-1 to B-1, then the equipment Prop empty is used, visualized as a sub-operation in below example. The sub-operation is automatically created and removed as needed.
A master sub-operation must exist with the possible equipment configured. Create additional sub-operations in Edit->Operation. The sub-operation also determine on which time step the sub-operation is connected to the primary operation (setup, workload, etc.). In above example the time step connects to the Emptying time.