Differences between MPs and MRP

MPs
MPS is a finished product schedule that describes the production time and quantity of a specific finished product. MPS is a decision to complete the product
Production Schedule and acceptable amount (ATP)Program. Based on MPS, MRP is calculated based on the requirements of the finished product.
Supplement to raw materials. MPS is not a sales prediction and does not represent a demand. MPs must consider production planning, prediction, pending orders,
Key materials, key production capacity, management objectives and policies. In addition to materials, MPS is also the planning basis for other manufacturing resources.
MRP
MRP uses BOM to convert finished product requirements in MPs to requirements for semi-finished products and raw materials. It uses inventory status such as OH and SR, and
The basic materials in the main material documents, such as Lt and SS, and the factory calendar, determine the materials required at the time.
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The abbreviation of MPs-master production schedule, as the name suggests, is the main production schedule, but the main production plan does not only contain finished products, as long as it is a master schedule item, you can join the main production schedule, for example, in the production mode of assembly-to-order, you can use assembly as the master schedule item to execute MPs on it.
In short, MPs calculates the master schedule item, MRP calculates all items, and MPs drives the MRP operation.

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MPS is mainly used for the production and production of finished products.
MRP mainly depends on the development of materials...
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Import the order or forecast to the main demand plan (MDS), then to the main production plan (MPS), then to the MRP, and then to the plan requisition or ticket that comes out of the final result. This is the basic process.
Taking the ERP system of an electronics factory as an example, the basic business process of the factory is like this. When the customer has an intention to place an order, the sales department's clerk will take the sample lending ticket from the warehouse and hand it over to the customer, if the customer is satisfied, the formal order will be issued after the promised delivery date. After receiving the customer's order, the sales department will establish and issue the sales order in the ERP system, and notify the department of production management, after receiving the order, the department of production and management will import other materials to the MDs to calculate the gross demand for the main materials required for the order.AlgorithmIt is expanded based on the material list established by the R & D department (BOM). The amount of each material in the BOM and the planned percentage are used to calculate the raw materials to be prepared and the amount to be prepared if the ticket is produced, after MPS is imported, calculate the number of semi-finished products, finished products, and production sequence to be produced for this order. Here we mainly consider the key semi-finished products and finished products. it is an independent requirement material (the materials required for the production order), rather than the required materials (the materials required for the production of materials ). after the MRP is imported, the overall production capacity (RCP) of the factory is implemented based on BOM, stock raw materials, semi-finished products, finished products, products being processed in the workshop) calculate the net demand for the production of this order, that is, the demand for procurement, the number of purchases, and the time for procurement, generate a plan requisition, transfer it to the purchasing department for approval, and generate a ticket, notify material control, workshop, and warehouse to prepare materials, send materials, and start production. when receiving a new order, and then import new orders into the MDS-MPS-MRP, adjust the new original production schedule, if the original order can be urgent order delivery backward delay, if the production capacity is too late to adjust the outsourcing processing. before the workshop starts, the customer needs to re-run the MRP to update the delivery date after canceling the order.
MDS determines the demand period, MPs determines the production schedule, MRP determines the procurement, and workshop production plan.