Introduction to Production Routings
Production Routings, or just Routings, specify the steps that are used to manufacture your product. Thus, a “Routing” is an ordered list of tasks required for a manufacturing process that is used for making a product. The same Routing can be assigned to more than one product if the same process is used to make each of them.
Routings versus Routing Tasks
In contrast to Routings, the “routing task” is a discrete step, or set of related activities that make up a step, in the manufacturing process. The same routing task can be used in several Routings whenever that exact step is needed. Refer to Routing Tasks for more information.
“Routings” and “routing tasks” are created separately, and then they are associated together in the Routing by adding each routing task to a list defined in the Routing. Routings are then associated with finished products by adding the finished products to a list defined in the Routing. (Routing tasks can be associated with sub-products if this is relevant.)
The Sequence of Steps in a Routing
When you define your Routings, you will add all the routing tasks to the list contained in the routing, and you must assign each routing task a sequence number that indicated the precise order in which the routing tasks must be performed during the manufacturing process. The sequence numbers you use can be any numbers you like (such as 1, 2, 3, or such as 10, 15, 20) so long as their numerical order corresponds rigorously to the order of the routing tasks that is required for correct production processing. It might be best to skip some numbers between each entry so that an addition can be edited into the sequence by inserting it between the current entries (such as 10, 15, 17, 20).
Multiple Routings and Choosing the Best One
Once you have completed a Routing, it is associated with the products where it can be used. A product may be manufactured by using different processes, such as when it is made in more than one factory, and those factory processes are not exactly the same. Thus, this product may have one Routing that is used in each different factory where it is being produced. Another example is when a production run for the product is very small (say 5 units) versus when it is much larger (say 200 units) and different Routings should be selected for better efficiency. Note that when a production run of the product is created, only one of the possible routings is used to make the product in any given production run.
In summary then,there is no limit to how many Routings a product can have (but only one of them is used in any production run), or how many products a Routing could be associated with.
To assist the opentaps system in choosing the correct Routing to use in a particular production run, the "minimum quantity" and "maximum quantity" Routing fields are used. To determine whether a particular Routing is suitable for producing the product in the required quantity, the production run quantity is compared to these Routing fields, in each available Routing for the product. If no routing with minimum and maximum quantity is found for the product, then the routing without minimum or maxmimum quantity is assumed to be the default routing and it is used.
Using Production Routings
to be continued