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E Wm Material Flow[1]
E Wm Material Flow[1]
E Wm Material Flow[1]
E Wm Material Flow[1]
E Wm Material Flow[1]
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E Wm Material Flow[1]


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MF overview

MF overview

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  • 1. FERRERO MATERIAL FLOW REVIEW OF SAP MATERIAL FLOW SYSTEM. POINTS FOR DISCUSSION Purpose: Understand the SAP offering with respect to Material Flow System available with eWM 5.1 Draft 29/01/2008 P.Villa
  • 2. FERRERO MATERIAL FLOW POINTS FOR DISCUSSION Material Flow Control Consideration 1 RFC adaptors
    • Is there a separate server that is linked to eWM and PLC via TCP/IP where messages are managed
    • If not, is this link then between eWM server and PLC
    • If yes, what kind of server hardware and software needed
    Notes for discussion
    • Does SAP provide a tool to build custom adaptors ?
    • The document mentions use of other RFC adaptors possible, are these adaptors provided by third party suppliers, if yes is there a list
    • Is there any restrictions with respect to PLC interface, RFC adaptors work with all or is there a particular protocol that must be complied with by the PLC. This is critical in that some warehouses may have equipment that have PLC that are maybe 20 years old.
  • 3. FERRERO MATERIAL FLOW POINTS FOR DISCUSSION: FAILURE MANAGEMENT How does system manage failure: eWM Consideration 3 How does system manage failure: PLC
    • How does the PLC react if there is a eWM failure, does the PLC continue as per last message
    • Does the PLC stop or does the PLC automatically generates a failure action, therefore instructs machine to move to a pre-defined standby position and wait
    • Does the monitor also show TCP/IP failure, ie able to differentiate between a TCP/IP versus PLC failure
    • Is it possible to see in eWM a failure related to a specific area controlled by PLC, this may be a segment, Check-point or resource.
    Notes for discussion
    • What happens when PLC fails, is there are remote actions possible, example re-start the PLC via a message from eWM
    • With respect to PLC failure how is the system re-aligned with actual physical position of a pallet, is there a way to manually update/override the eWM with actual situation so that when PLC re-starts the PLC then actions latest message in the queue.
  • 4. FERRERO MATERIAL FLOW POINTS FOR DISCUSSION: PLC INTERFACE PLC Channel Consideration 5 Physical layout mapping
    • Is there a limitation on number of PLC channels or any restrictions
    • In certain cases a PLC needs instruction even without any related pallet, example is a conveyor that moves continuously or a lift ect…Continuous move resources
    • Is it possible to send a eWM message to block a certain segment or check-point in a conveyor or must this be done on PLC which in turn send message to eWm to indicate blocked segment
    • In certain cases a sorter needs eWM response to decide if sorter need to deviate to another segment, what king of response performance can be expected from eWM.
    • VERY IMPORTANT : is it possible to have gradual replacement of 3party material flow by introducing eWM channel to PLC in steps, this means having some PLC driven by eWM adaptors other by 3° party material flow. This is critical for Ferrero in order to minimize disruption and risk.
    Notes for discussion
    • Is it possible to represent the physical layout of the warehouse and related automation, example:
    • Segment and Check-point for conveyor
    • Resources that moves pallet from one CP to another
  • 5. FERRERO MATERIAL FLOW POINTS FOR DISCUSSION: PLC INTERFACE PLC programming rework Consideration 7 Conclusion
    • Is there any rework required with respect to PLC programming to use the message adaptors
    Notes for discussion 6
    • Are there any live sites ?
    • Is there any documentation other that current Material Flow Presentation document.
    • From a functionality/usage/technology how does SAP Material Flow system compare to Siemens prox4
    • What about licensing costs, is this covered by SCM 5.1 eWM ?
    • Will there be any reporting KPI to indicate:
      • Number times resource XX has had failure
      • Performance KPI of a ASRS