MTBF-MTTR-Global Table

Question

question

komalkoli asked Aug 25 2024 at 10:36 PM komalkoli commented Aug 27 2024 at 5:26 PM

MTBF-MTTR-Global Table

I am using Global table for downtime and uptime in MTBFMTTR command. However, the code written for down time/up time is not working in sequence as per global table. When I run model, its taking random values form Global Table.

How to run global table for MTBFMTTR function? Thank you.

MTBFMTTR Global Table.fsm

Software Version:

FlexSim 24.1.1

global table mtbf mttr

mtbfmttr-global-table.fsm (12.6 MiB)

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Answer 1 · 2024-08-26T06:34:48Z

Felix Möhlmann answered Aug 26 2024 at 6:34 AM komalkoli commented Aug 27 2024 at 5:26 PM

The current code is choosing a random row each time. You can use a global variable to denote the row and increment it in the Up Time code.

mtbfmttr-global-table_1.fsm

(I removed the Process Flow activities to quickly get rid of the error messages. The sources were not linked correctly.)

mtbfmttr-global-table-1.fsm (11.2 MiB)

· 3

komalkoli commented · Aug 26 2024 at 9:19 PM

Thank you, this worked!

Just a follow up question - I need to add coffee Break from 9 am to 9:15 am and Lunch Break from 12 pm to 12:30 pm. For this, I used "Time Table" option. However, machine does not stop for these two breaks. Is it because I have MTBFMTTR already assigned? How can I add coffee break/lunch time in addition to MTBFMTTR?

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Felix Möhlmann komalkoli commented · Aug 27 2024 at 6:02 AM

Time table and MTBF can exist in parallel. But you should make sure that the stop and resume functions are using a different "Stop ID".

Optionally, you might also want to only apply the MTBF to the 'active' states, so the machine doesn't break down during the break.

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1724738542552.png (12.2 KiB)

komalkoli Felix Möhlmann commented · Aug 27 2024 at 5:26 PM

Thank you very much. It worked!

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