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I am building a model where I need to use relational data tables to create objects and elements due to the large size of the model. I found helpful resources to guide me when it comes to auto-creating objects and elements (Simio Help Guide, SimBits, and Examples). But for some reasons I couldn't find resources that address directly the topic of process logic design in data-driven models. There is one particular example that's very relevant to my case. This example is MultiEchelonSupplyChain that comes with Simio (in Simio: Support > Examples > MultiEchelonSupplyChain). This example is solved using two approaches. The second one (the data-driven approach) is the one I'm interested in. In the accompanying PDF file that explains the technical details of the example, it does not explain the differences in process logic design. For example, how do I define triggering events? Some of the processes in this example have no triggering events. If you know of a resource that explains designing processes for data-driven models, please share. Thanks.

Hi M_A, Just setting the Sequence property to 'Sequence1' should be enough since you set up relational tables. Because you have Maximum Arrivals set to '1', it is going to produce 1 entity type. I would switch your Maximum Arrivals to '35' and number of entities per arrival to '1'. You will also need to set your interarrival time to '0', so all 35 show up at the same time. It might be best to use a second Source object to create your second shift. I would increase the length of the Ride Station Queue in order to see all 6 passengers boarding the Vehicle. I think the network is fine, but hard to debug. Be sure all travel destinations for the Vehicle are possible. Thanks, Ryan

Hi Ryan, Thank you for the corrections. As always, spot-on advice, that is very appreciated. I do have a few follow up questions. - Do I set the Initial Sequence property to 'Sequence1' or do I need to tell it the row too? 'Sequence1.Sequence'? Sequence 1 is working, but just wondering. - In the SimBit, Entity Follows Sequence With Relational Tables, there are three types of Entities that all flow through the same source with the Source Property, Table Row Referencing, pulling from the JobTable with the Row Number 'JobTable.ProductMix.RandomRow.' For my model, I have two different entities and the source Bldg is supposed to pull BOTH entities with the Table Row Referencing, "JobsTable" with Row Number: "JobsTable.NumberWorkers.RandomRow." But when the model is run, only one entity is ever used. The Table has an ExpressionProperty of Random.Triangular(3,6,9). Is that the problem? The SimBit's table was an actual number. I tried replacing the Expressions with actual numbers and the Entity switched to use the other one but I am still not able to get half the 34 to be one Entity and the other half to be the other Entity. - How do I get the Vehicle to carry its max capacity? The capacity is set to 6, and it only carries up to 4 entities around at any time. This is incorrect, as the Entities are supposed to be grouped into work teams of Random.Triangular(3,6,9) for their initial Source output move. Afterwards they can be individuals or work teams. The Bldg has the Entity Type defined as the JobsTable.Specialty so it should pull from one or the other (like the below mentioned SimBit), and the with Entities Per Arrival Set at 35; and the Entities themselves are set to a population maximum of 17 each and I get a Runtime error of maximum number exceeds limit for the entities. Why doesn't it hit the limit and then pull from the other Entity? - I'm confused about the network you mentioned above. I thought the nodes had to be linked directly (output to input node). So the busy nodes have a lot of paths radiating out from them and it makes it a little messy. Is there a cleaner way to show the routing? Thank you,

Hi Ryan, -The model gets stuck at about an 1 hour into it. Can't get it past the vehicle going back to the 'Bldg,' as seen when I track the vehicle. -The distributions are all random triangular with set parameters in the Sequence1 Table. The idea was that the 35 people/Entities would arrive at the Bldg Source and as Entities the JobsTable would assign a random triangular number of workers to a job and then start ferrying them per the sequence in the Sequence1 Table from the Key Column from the Bldg. The vehicle can carry 6 people but it seems to only carry 4 at a time. Also, the ferrying is completed at about an hour and the vehicle just stops at the Bldg with 4 passengers. Instead, it needs to continue ferrying by having the entities 'call' the vehicle to their location to continue the route sequence, through LunchBreak, and then get eliminated at the EndOfShift node. 11May.v2.spfx

Hello, I have a Arrival Table, but I only want to create Entities of a specific part of the Table based on a property. IntCol Entity 0 A 0 C 1 B 1 c So, the source should create all entities with a certain integer in column 'IntCol'. The integer value is assigned by a referenced property that I can experiment with different parts of the ArrivalTable For example: If Property == 0 , create only A and C in the source. How can I do that? All the best

Hi Mirek, I think the problem here is your setting arrival mode to arrival table. I am not sure but after generating right entity the source object then assigns it row according to the arrival table which means row 1. Then the right entity (B) follows the wrong task sequence. Try by setting arrival mode to interarrival time. This time it should follow the right seqeunce. I will try other options and inform you if I get any other solution.

Hi - 2 questions: 1. My model has people coming on shift, being transported to various locations, and then ending their shift at the sink near the source. However, I need them to get picked up and have ALL cycled through the lunch break server. Right now, out of the 35 people on shift, only 1 person got lunch, and only 6 people had their end of shift. How do I constrain the server to ensure the vehicle drops everyone at the lunch server and then the EndOfShift? 2. I would like to model 2, 12-hour shifts (each with the 35 people). I need all 35 to show up at the same time. This is my source Entity Arrival Logic. How do I change it to have two sets of 35 show 12 hours apart?

Hi Cam.laboy, I mean you have to define new customer types and include sink objects into their sequences. I attach a picture of how to revise probabilities of these new customers. Hope it helps.

yes, it works if the sink objects are in the course of these customer entities.

Process logic is typically added to a model on an as needed basis. For instance you will notice that some of our Scheduling examples, like SchedulingDiscretePartProduction (via Support ribbon -> Examples) does not use any process logic. There are several ways to initiate process logic which you could read more about in the "Processes" help topic. For instance, all objects in the Standard Library have an Add-On Process Triggers property category that allows you to specify specific points in the simulation that you would like to execute a process (like on Entered for a Server). A quick tip: you may double click an Add-On Process Trigger property (like Entered for a Server) to create a new process corresponding to that trigger. There are also other ways to initiate processes: using Elements like Timer or Monitor, user-defined Events, or the Execute step. I would recommend investigating these further in the help documentation if you are interested in learning more. One of our newest example models (provided in the software) called InfectiousDiseaseSampleModel demonstrates using fairly comprehensive process logic along with a data-driven approach. Happy modeling!

Ever want to track statistics periodically, like by hour, shift, day, or week? I created this pair of objects for a customer about a year ago, then forgot to do anything with it. Perhaps others will find this to be useful. The solution is two objects, one for states and one for tallies, that allow you to flexibly designate periodic statistics on any interval, can skip periods (like off shift times), provides an optional plot, and provides the choice of logging or output file. I frankly don't recall how complete this was when I left it, but I'm sharing it in the hopes that others can benefit from this work and possibly even complete/improve it and reshare with others. Enjoy! PeriodStatisticObjects.spfx

Hi everyone For the competition this year, we have to make waves for the warehouse system and Simio has sent us a base model of the wave system (attached below) but I am unsure how to take the base model for the wave system that simio sent us and integrate it with my own model . So currently my shelves are all sources and there's specific weights going from the source to cater for if the item is for future/now, apparel /footwear, case/multi/single and if it's at the top or bottom shelf and the source produces around 30 entities at a time at certain time intervals and the vehicles will pick it up from the node and take it to its specific location.( I calculated all the weights : for example 70 percent of items are footwear and 30 percent are apparel, etc) Can anyone please suggest how I can integrate the wave system into my model ? ( I was thinking of somehow connecting the base model to my sources??) Thanks a lot BaseModel_May2020_StudentCompetition.spfx

Hi, Thank you for your answer. But my problem is not on the first Source. My proble is for the source "Source_Aub_Char" and "Source_Aub_de". The fifth vehicle don't pick up the entity waiting in the sources' Queue. Thank you.

Hello every body. I am a beginner on SImio and this software is very powerfull. I have a problem I want to modify Fixed route vehicle's destination. I don't want a vehicle on demand.I need a fixed route vehicle. But I need to modify the vehicle's destination. Because I want the first vehicle Go to the first source and i want the second vehicle go to the second sources. And I have 80 vehicle and i want this loop destination for all vehicle. It's works very well for the First 5 vehicles ( For Source_Aub_Char in my model) and it's doesn't work for the sixth and after it's works. But my method doesn't work for all vehicle. I don't understand why. My method is : - I select the current vehicle with "Path1.Contents.FirstItem" - And After with "set Row" i selected différent sequences table for the current vehicle - I do a count for the number vehicle entrance and the model choice the good sequence table with this counter. There is my simplify model in attachement. Some body can help me to see what's wrong or to give me a better method ? Thank you very much. And sorry for my english i'm french. Question FOrum.spfx

********************* FOR VERSION 191 AND LATER ******************************* In Sprint 191, a change was made to the Seize step's On Seized Process and the Release step's On Released Process which impacted the Token Associated and Context Objects. This change effects the logic in VehicleX. For use in Simio versions 190 and earlier, please use the files at the top of this thread. Attached is an updated VehicleX (now VehicleX3) for use in Simio 191 and later, as well as the updated examples using VehicleX3. VehicleX3 now will reject an Entity's Transport Request if an operator is not available for that vehicle. This prevents entities from seizing and waiting for an unmanned vehicle. *************************************************************************************** VehicleX3.spfx VehicleWithDriver_VehicleX3_Examples.spfx

Hello all, In my model, I have a pool of secondary resources representing Firms. Order entities with random amounts arrive from a source, targeting randomly selected firms. The amount in each Order entity is registered in a state value vector (called "FirmDemands" with a row for each firm) as the demand for its target firm. I would like to direct Product entities coming from a different source to the firms according to their present level of demands. I suppose I could use "Select from List" option, but how would I refer to that state value vector in the selection expression so that a product will be assigned to the firm with the highest demand at that time?

Hello! I want to make the simulation model which illustrates about the interference time about three kinds of truck. And such trucks enter the warehouse and head to the specific loading spot to do forwarding operation with one goods among four kinds. That is why interference time occur, by which I mean that I have to make model to find the most suitable spot for each goods forwarding activity by switching each spot. However I can not find the accurate properties avoiding each other objects at path, or even allocating several time delay on the situation that they encounter. Anyway, I want to see object avoid each other by decelerating its speed and calculate overall time delay at the result tab. (20 seconds per each interference) If I can apply the time delay, the kind of the object does not matter. I already tried to make the entities play a role as the truck that works mentioned above, but that trial was failed because there are no property to decelerate, or avoid at least.. I sincerely want my dear SIMIO to achieve a success in this modeling.. Thank you!

Hello, I'm college student preparing the contest sponsored by "KOREA SOCIETY FOR SIMULATION". So I'm making model which has no input buffer , just remaining on the path. But the issue is that, if i set the input buffer as 0, the source makes entities only two, which is the sum of the sever's capacity.... I have seen that kind of model at the jsmith.co , but my model doesn't act like that.. What should I do for my model? isThereInputBufferCapa.spfx

In order to see the entities accumulated on any path you should first transfer the created entities (which Adam mentioned above) out of the source object. The attached model shows one way of how you can achieve accumulated enities on any path. isThereInputBufferCapa.spfx

I noticed that the Source is not making just two entities, as you stated, it is actually making several as governed by your Interarrival Time. But since you have Output@Source1 (TransferNode) Blocked Destination Rule set to 'Select Available Only', all entities created after the first two are waiting until one of the Servers has finished processing. You will notice that once Server1 has finished processing, an entity is released from the Source (since its destination has been assigned). I would recommend exploring this further by enabling 'Model Trace', from the Run Ribbon, to see what is happening behind the scenes. Happy modeling!

Additional Information: In the work schedule only some of the resources are going off shift while some are staying on (in this case there are 10 resources scheduled for the shift but 5 take the first lunch break from 1130-1200 while the other 5 resources take a lunch from 1200-1230). How can I suspend processing just for the partial amount of the objects in the shift that own the 5 resources that are "taking lunch"?

Hi Glen, Would it at all be possible now or in future to import and export processes? We have 8 models that have to use the same processes but have different data tables and layouts. Most of the logic we can place objects but not all, so we have some logic in the main model. Any suggestions on how to do this other than a manual copy paste? Regards, Willem

If you want to experiment with different number of resources (or servers) you can create these objects automatically by using auto-create functionality. This will save your time and simplify your progress.

You can use seperate servers (each has 1 capacity) each represents individual firms. Create entities (raw products) via a data table where you should also include one column (a node property from object reference property) to represent where the created entity will be processed (as its destination). Then at the output node of the source object set entity destination type property to specific. Then set node name to Table1.NodeInstanceProperty1. The entities will be routed appropriately.

Hello, I'm wondering if anyone has a good idea for how to view a resource's utilization according to the day of the week in the pivot grid of an experiment? Currently, my best idea is to just have a status plot in the facility window to illustrate this but I'd prefer to have an average utilization by day of resources in the pivot table. The scenario I'm working with is having "technician" resources that are being seized by server objects to do "maintenance" on the truck entities coming into the maintenance shop. I'd like to see which days of the week are the busiest so I could determine where to schedule new technicians. Any help is greatly appreciated. Thanks! Pit-To-Bay Off-Shift Rule Fixed.spfx