Overview

A by-product is a secondary product that is produced during the manufacturing of something else. For example, in a manufacturing process, waste water comes out as a by-product. You may want to measure the amount of the waste water coming out of the manufacturing process for the compliance reasons. To do this, you sometimes run into a separation phase.

In this case, you will identify one of the produced materials as the finished good and all other produced materials as by-products. If you have a derived product, separation phase, or more than one output in a process, one of the products will be the finished good and all others will be by-products.

By-products can be a model in BOM. Similar to specifying the finished good and the Production Rules for the finished good in BOM, you can also specify the by-products to be produced as a part of the execution of that BOM and the rules used to track the execution of the by-products.

You can define an item as a by-product by modifying the configuration in the database to be able to define the material and modifying the BOM to specify that it will be a by-product. Then you will modify the process to add it resulting from the process.

The materials are defined by selecting the Items module in the Wonderware MES Client, Product Definition group. Configure the BOM of the item that will be producing the by-product of the item configured, and configure a BOM position less than zero to designate it as a by-product of the process. By-products are always denoted with a negative BOM position value, and they are always produced, not consumed.

After the by-product is defined, the process needs to be modified to link the by-product to the item to add all remaining quantity to the process.