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  1. Hello everyone, I am working on a project for class and am having difficulties assigning workers to specific servers depending on what day it is within the simulation. I have 18 workers and 16 servers. Each worker has their own 25 day schedule. On a given day, there is between 5 and 8 workers on shift and each worker needs to be assigned to 2 specific servers and no other worker should go to those servers on that day. However, due to the different schedules, a given worker will not always be assigned the same rooms they were assigned the previous day. Is it possible to assign each worker a specific server by day? Or is there another way that this might be possible? Thanks in advance for any suggestions!
  2. Hello everyone! I'm new in Simio. I hope you guys could spare a moment to assist me with a challenge I'm facing. I have a problem in my simulation model, I have one entity routed at random to one of two lines for processing. These processes follow distinct sequences as describes as follows. 1st sequence (A): S11 - TN11 - TN21 - S22 - S23 - TN22 - TN12 - S14 - Sink1. 2nd sequence (B): S21 - TN21 - TN11 - S12 - S13 - TN12 - TN22 - S24 - Sink2. I intend to integrate a neural network to predict the average makespan, similar to the Neural Network solution provided in the Sample SimBit Solutions. However, I encountered a discrepancy between the example model and my model. In the example model, there is a "Path" feature, which allows for the definition of specific routes. Unfortunately, my model cannot use the "Path" since my model has selection logic for choose transportation in the transfer node either use crane or vehicle, so I need to use a sequence table for the entity to ensure it follows the desired paths. The issue arises when attempting to utilize the neural network. I need to use the "Select From List" for the "Entity Destination Type" in the "Output@Source1" part (I already made the list of nodes = Input@S11 & Input@S21). However, I cannot use this since I already used the sequence table for the entity. As I know from the SimBit, I need to set "Entity Destination Type" by using "Select From List" with the selection goal = random as a base model, and later I will change it with the neural network output. However, from the beginning of this process, an error occurred, as depicted in the attached image. So, I just think could Simio do this: if entity go to Input@S11 then use the 1st sequence, if entity go to input@S21 then use the 2nd sequence but still using the "Select From List" for "Entity Destination Type" since later I will use the smallest value from Neural Network for the selection goal. I also attached my model below for more understanding about my model. Thank you for helping me. Best Regards, Oey Aldi Winata BASE MODEL.spfx
  3. Hi all! I am simulating a facility with nearly 40 servers, each one starting with some entities in the input node at initialization and having a different capacity. Each server has a 0 input buffer capacity. My entity creation is currently set to having an interarrival time to be 4.33 weeks (1 month) with a random number of entities created. Currently, it runs 24/7 and does not care about the time, but I want to incorporate that. How can I make it so that the entities arrive once a month, let's say the first Monday, at 8am? How can I make it so the servers are only processing between 8am and 4pm Monday - Friday? The work schedule doesn't seem to work for me, but I could be doing it wrong, since I have a 0 input buffer, which I can't change as it's part of my routing logic for overflow. I would be happy with using timers or a process logic if someone can explain it to me. Ideally, the entities only arrive when it's during the working time, and the entities remaining after 4pm are just put on hold until 8am the next day. Thanks in advance!
  4. You want to make the servers have a Capacity Type of Schedule and follow the default Standard Week. If you don't want to give them a lunch break, just change the definition of the Standard Day. Leave the default Off Shift Rule of Suspend Processing. The easiest approach for arrivals is to have a Source with an Interarrival time of 4.33 weeks (or 4 weeks) and an integer random distribution for the Entities Per Arrival. Doing a "first Monday" is possible, but a bit complicated because Simio time does not have the concept of Month because months are of varying size. You could probably specify the initial Time Offset to be early in a month, then maybe make the interarrival time be something like DateTime.DaysInMonth(DateTime.Month(Timenow),DateTime.Year(TimeNow)) which would make the next arrival be exactly one month later (same day of the month). When you say you have no buffers, what do you mean? If an entity arrives when all servers are busy, should it be balked (possibly disposed) or should it wait somewhere like on the server input node, on a path or in the Source output node? If the above arrival approach isn't exact enough, you can put exact arrivals in a data table. The arrival time could be specified at any exact datetime you desire and still have the Entities Per Arrival be a distribution.
  5. Hello everyone, I have a server which can potentially have many entities waiting in the input queue. All these entities have different priorities (as a model entity state variable). I want to retrieve these values to then select the highest one and put it on a status label to track this during the run. Is there an option to do this? Regards, MF
  6. Thank you for the quick and detailed response! I see the error I was making with work schedule and have tested it on one server, it seems to work as intended. Since each of my servers have a different capacity, would I need to create a unique work week and unique day type for them all? Or is there a quicker work around? The manual inputs for the date time are a great work around, I'm only modeling for a few years so I don't mind inputting a few dates. What I mean by there being no buffers is that no server can have a queue. I used a list for selecting the destination on the output node of each source (total of 8 ) where it's a hierarchy. It can go to a select number of servers and if all of them are full it goes to a dummy server of infinite capacity that exits the items to an overflow sink.
  7. I'm making a call center simio model. The 7 types of calls are generated at sources and then move down a path to a server. This server represents a queue that is formed at the call center. After the queue server the calls are transferred to 1 of 7 desks (which are represented by a server) where a call agent is working. How do I make it so the calls do not go to one of the server desks until a desk becomes available. As it currently stands the calls go right through the queue server and build up at some desks even if there are free desks available.
  8. Hello everyone, I am creating a new "customize" model and try to enable addon process, but I cannot find this option in the following list.
  9. Hello, I am trying to use git to track changes when working on Simio projects collaboratively. For this I am saving the project as *.simproj and the resulting file and folder structure looks good. But there are too many time stamp changes that make it difficult to track the "important" changes. For example, I only changed the location of the DefaultEntity in the model and hit save. The resulting changes are shown in the attached screenshot, with 20 files shown as changed. The main changes are related to the time stamp. Is there a way to configure Simio such that fewer files will be affected by each change? Thank you. Annika
  10. Hi everyone! In the project I'm developing I need something similar to what was done on the Simbit "EntityFollowsSequence". The difference is that I need to be able to change the destinations (update the contents of the sequence table) over time (the number of rows of the table can be fixed, although it would be ideal if they could be dynamically created). Could someone please explain how it would be possible to do this? My edition is NOT Enterprise. Thanks.
  11. Hello there, this is my first post here and I hope someone can help me with my problem. I´m quite new to Simio and working on my first project. I have some "return entities" that are considered "bad" at the end of the production. So they will get collected in a server which is used as a storage and get returned to the factory every 24 hours, to get reworked, if there is capacity left. Now, I want to check if there is capacity left in the destinated server and in best case, reserve the needed capacity before, before I route these entities towards it. After the entity arrived in the server, the reserved capacity should get released again. I couldn´t find a good example here in the forum or via google search, as in the SimBits, how to solve this the correct way. Maybe someone here can give me a tip, how to. Thanks in advance. Aljonator
  12. Hello, I am trying to run over 100 different scenarios in a design of experiments approach. I have a data table that references different vehicles and sources to set certain conditions, but I'm having a hard time converting the table (which has 100 rows) into the experiment section to run. Any advice appreciated, thank you!
  13. Hello all I am relatively new to Simio and DES. I am trying to model a pallet conveyor. It is a closed loop conveyor. I use the "vehicle" as the pallet that loops around the conveyor. At the source the part (default entity) is loaded on the pallet. At the sink the part is unloaded. The problem that I am encountering is that the vehicles from time to time pile up at the sink, then after a certain amount of time they continue back to the starting point "Source1". This happens more the more I increas the "initialnumber in system" of vehicles The transfer-in Time for the sink is set at 0. At the model trace I read this for the "Input@Sink1" : "the in Token waiting at VisitNode step for '1' other processes to complete." I would apreciate any advice. Many thanks! Vehicle_stuck_at_sink.spfx
  14. Happy new year! One thing that I noticed is that with this model, the server never have a state of "blocked". I increased the processing time of Server2 and added a status pie to Server1. The server 1 is either Processing or starved, but never blocked according to the pie. But it should be blocked part of the time since I increased the processing time of Server2 to force this. It looks like the Server1 only accepts a new item to process if the path between Server1 and Server2 has room for at least one more vehicle. So the time that it should be blocked is considered as part of the "Starved" instead. I tried to figure out why this happens without success. Anyone knows why this happens? I attach the model to the post. Thank you! Input Server1 not blocked.spfx
  15. Hi, there is a simple approach you can use. Use Connectors between the queue server and the desks. At Buffer Logic of the Desks, change the Input Buffer Capacity to 0. Create a List with the Input nodes of the seven Desks. On the Output of the queue server change Entity Destination Type to Select From List and the goal to Smallest Value. Keep the default expression. It should work fine.
  16. Hello all, Can I use "print" command or similar process steps to print some information into console or a file for debugging? For example, in other programming environment, such as Javascript, I can insert ```console.log("xxxx");``` into program. Thank you!
  17. Hello, You can go to the process tab in the model. Once in the process tab you can click on create process to create add on processes at the model level.
  18. Hi all, I have a model with several servers, each with their own Changeover Matrix for cleaning between jobs. This is done by a Sequence Dependent Setup within the Servers Task Sequence steps. This is working fine when the Cleaning is either done 100% Automatic or 100% Manual with a Worker called as a Secondary resource. Some servers however require partial support from a Worker. For example a COMatrix of X mins needs to include 5 mins support from a Worker at the start and 10 mins support from a worker at the end of the Changeover period, with the middle X - 15 mins in the middle of the CO cleaning period (There are other more complex examples too where the operator will be required half way through the process too to empty the cleaning waste container). Is there a way of saving the COMatrix time, rather than running this delay, so that I can then build an add on process or add further task sequences to break the time into its Automated and Manual Components? Thanks in advance for any suggestions. J
  19. hello :), I'm trying to make a model with three servers. Everyone uses different Workers type and have different operation time per entity (no problem in these points). The difficult part is the next, every work center (server) has a different setup and changeover, and both happens without the presence of the entity. I mean the setup of some servers starts when the entity is created, (before the arrival to that server), and after the operation the changeover has to be done, in both cases we need to use or assing a worker. How can I do that?
  20. Description of Runtime Capability Runtime is the ability for people to execute a Simio model without investing in that design-time version of Simio. Simio imposes no limits to the number of models you can distribute or the number of people you distribute to. And you are free to distribute outside of your organization if you choose. There is no charge for any such distribution. Two runtime modes are available: Interactive Runtime Uses Simio Evaluation Version which is available free to anyone and may be used without activation. It provides the ability to load a model, run it interactively to view the animation, and even change the model at will. Model changes cannot be saved nor is the capability provided to run experiments or execute custom user-written steps and elements. Only Simio Team Edition is capable of creating models that will run in Interactive Runtime. Full Runtime Uses Simio Express Edition. In addition to the substantial modeling features built into Express, it provides the ability to load and run models, save model changes, run experiments, and execute custom user-written steps and elements. Design and Team Editions can create models for use with Full Runtime.
  21. First of all, Thank you so much for the answer in advance, but could I bother anyone who answers with some example model or picture of the method I am still new to SIMIO, so I am concerned about following the advice correctly. 1) Let's say every day I have X number of people arriving( using distribution to generate numbers outside SIMIO randomly). This is the shop where people visit from 8.00 to 20.00 every day with different visit rates per hour (example as below), and I use X to time to this percentage so I can get the exact number of visits per hour. The problem is I want to make an arrival interval random with some sort of function/distribution or table(excel calculation), not a stable arrival rate. My idea is random from 0 to 1 and gives the random number (Y) to match with X outside SIMIO and put the whole table in, but I wonder, is there any better method than this? 2) The second question is about two entities from different sources, A and B. A and B will go through the same server for three servers, but after server 3, one will go to 4, and one will go to 5. Can you give me any advice on how to do that
  22. I have a multiple combiners into which a single worker provides entities. While the worker is at a specific combiner, I want to check if that combiner's output buffer is full. I'd prefer not to create a separate process for each combiner as I have dozens. How do I code the process so that it is generic and that 1 process can work for any combiner? I'm hoping this is an easy question. Sorry if it's obvious. Thanks for your help.
  23. Ok, I think that I sort it out. I am not very confident of what I do but I think that it works now: I changed the Vehivle "Routing Logic". Idle action: Go to home AND I changed for every server, secondary resources: Earlier it did not work because the vehicle was stuck at the sink waiting for an entity to be available at the source. The idle action for the vehicle was to "Park at home"..
  24. I'm trying to do something similar to do this where an order has 4 different routes or paths it can go (My model currently doesn't have paths). I created 3 separate sequence tables and created a process logic depending on if a certain workstation is already processing an order/entity, to go through this sequence. For some reason, whenever it gets to the "set row" step, there is a table reference error mentioning "no entries found" if though in the process step, I specify which row to start the new sequence. What is the reason behind this error?
  25. We are simulating the aircraft will leaving the gate according to our real data history. How can i import the table in simio and let the aircraft leave the gate accouring to the time and date? Also some gate will have more than one different time and date that aircraft will departure the gate. How can i do it as well?
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