Detailed scheduling is the MES function that transforms high-level ERP inputs (orders, quantities, due dates) into a technically feasible production sequence on the shopfloor.
Dispatching then translates this plan into concrete production steps in real time and reacts dynamically to deviations or disruptions.
According to VDI 5600, both functions are core components of a Manufacturing Execution System (MES).
The goal is to utilize machines, personnel, and materials as efficiently as possible while considering constraints such as setup times, shift models, and order priorities.
Scheduling and dispatching connect the planning level (ERP, APS) with the execution level (machines, BDE/MDE).
Sequencing of orders on machines and production lines
Bottleneck analysis and prioritization of critical orders
Setup optimization (grouping by tool, product family, or material)
Simulation of alternative planning scenarios (“what-if” analyses)
Real-time reactions to events (downtimes, material shortages, urgent orders)
Actual-vs-target comparison using BDE/MDE feedback
Higher delivery reliability: orders follow real capacities instead of assumptions
Lower setup costs: through family-based sequence optimization
More stable operations: dynamic rescheduling during downtimes
Transparent utilization: all resources at a glance
Better decision-making: simulation and KPI-based control
A machinery manufacturer replaces static Excel-based planning with MES-based detailed scheduling.
The system automatically creates setup groups, considers material availability and shift changes.
Result: 10 % higher output, 30 % less planning effort, and significantly improved schedule stability.
Scheduling and dispatching act as the connective layer for all operational MES functions:
They use data from BDE/MDE for real-time feedback,
access material and personnel management,
and provide KPIs to the information management module.
Detailed scheduling and dispatching turn planning specifications into executable production workflows.
They form the link between ERP and the shopfloor, enabling short lead times, stable processes, and data-driven decisions — the very core of Manufacturing Operations Management.