SAP EWM Material Flow System

The SAP EWM Material Flow System (SAP EWM MFS) enables you to connect automatic warehouses without the need for an additional warehouse control unit. 
In automatic warehouses, various technologies are used, e.g.:

  • Conveyors for containers, boxes, pallets, wire mesh containers (belts, chain conveyors, roller conveyors)
  • Storage and retrieval machines (SRM) for driverless access to storage spaces
  • Distribution vehicles for the lateral movement of handling units (HU) on various route segments via buffer positions
  • Scanners, sensors for contour inspection, weighing scales, etc.

Automatic warehouses are mapped in SAP EWM MFS (SAP EWM Material Flow System) with:

Communication points

Points where the EWM and PLC exchange information, e.g. an identification point where handling units are scanned

Conveyor segments

Leg between two communication points


In the material flow environment, e.g. storage and retrieval machines and distribution vehicles 

The programmable logic controller (PLC) communicates via telegram with SAP EWM MFS. With exchange of telegrams, the movements of the handling units from communication point to communication point can be controlled. The control decisions on how the handling units move through the material flow system are mapped in the SAP EWM material flow system using layout-oriented storage control.

As of SAP EWM 9.4, you can establish an immediate connection from SAP EWM MFS to the PLC using TCP/IP connection. With older releases, an RFC connection is first established from SAP MFS to SAP Plant Connectivity (SAP PCo), and then a TCP/IP connection.

SAP EWM MFS also enables various exception handling, such as blocking of an operating resource. In the warehouse management monitor, processes can be monitored, evaluated and influenced.

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