Search the Community

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

Hi I have an entity that is moved through the network via vehicles. The vehicle will drop of the entity at the first server which then gets processed through two servers. I would like to use the vehicle that dropped off the entity at the Input to the first server to be used to pick up the next entity at the output of the second server. Is there a way to save the exact Vehicle that was used and specify that as the Vehicle to use at the second pick up point? Hopefully to a global variable and not to the entity (in my actual model, the entity going in to Server 1 is not the next entity coming out of Server 2). At the moment I am using 'Reserve Closest' as the reservation method at Server 2. I know that is incorrect, but I'm not sure how to setup this up using the other methods. In the attached model, process works for the first entity, but does not for the second entity onwards. Due to other limitations in the model, I need to have the Vehicles to 'Remain in Place' during idle. Thanks in advance for the help. SpecificVehicle.spfx

hello i'm the simio user in south korea i want to make my model flexibily. My model has vehicle and elevator The overall process flow is vehicle take entities to server1, After vehicle arrived to server1, elevator take entities and go to every destination. To work well, Three things are needed for this trend First, i want to do if the vehicle comes to server1 then the elevator goes to upstair Second, the vehecle has to wait until the elevator after been to upstair and arrive to server1 Third, repeat the two steps. how can i solve the problem this model in Model2, not Model1 1veh1eleModel.spfx

I want to build a simple repository model,as the Picture below. And there are two Funktions, that i donn't know, how to implement. The first Problem is: I hope that several products with different total amount can be generated in sequence one by one. For Example, there are 50 Product A, 40 Product B and 30 Product C at Source WE. They schould be generated in sequence. First 50 Product A,1,2,3...50 one by one generated. Then 40B, generated one by one and finally C. At present, I can only achieve one-time generation of all A, then all B and All C. The second Problem ist: there are may be 10 Vehicles in the System. I want to record the total time of the car loaded and empty travel time, and the corresponding percentage of these two items. I would be very very grateful if you could help. I'm really in a hurry and hope to get your help.

Hi - I have a vehicle that moves through several servers, one of which is 'LunchBreak;' however, when running the model, the vehicle parks at LunchBreak and the people do not get off and nothing more happens the entire run. Thoughts as to why it gets stuck here?

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?

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

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!

I am making a model that simulates trucks coming in with a certain amount of pallets. These pallets are transported with the use of forklifts to a sink. The truck arrives at a seperator where the pallets and trucks are seperated. The idea is that multiple forklifts work on one truck when there is only one. But when a second truck arrives one forklift should switch to the new truck. In the current model they work on the same trucks and react when a new truck comes in they unload it but then continue transporting the pallets of the first truck instead of staying with the new truck. So as soon as a forklift unloads a truck I also want it to transport the pallets within it. I think this has to do with the reservation of the vehicle. I already tried a lot of different options but nothing seemed to be working. I uploaded my model as well and I really hope someone could help me with this issue. Thanks in advance! Model1.spfx

I am trying to model forklifts moving around that require a worker to operate. I found this example under SI Shared items and have tried to recreate as best I can. However, my model is complex in that I have multiple workers and forklifts. I want the forklift to choose an available worker. I can get it to work with 1 specific worker, but when I choose from list of operators I get this error: I have tried all the different Travel Mode options. Any ideas on how to correct this?

Hello, In my model, I have two vehicle types. The first type, MyVehicle, is a subclassed vehicle similar to the vehicles in the SimBit Electric Vehicle, except they use Free Space Only. The other type of vehicles are standard vehicles. My problem is when entities seize a vehicle for transport from one server, I want them to seize the closest MyVehicle and only seize a standard vehicle if no MyVehicles are available. The output node at each server is set to select from the transport list which includes both vehicle types. If I set the reservation method to "Reserve Closest" the closest vehicle of either type is reserved and if I set the reservation method to "Reserve Best", MyVehicle[1] will be attempted to be seized even if it is not the closest MyVehicle. I assume there is a way to use an add-on process to control which vehicle is seized, but I am unsure. Just FYI, I have MyVehicles starting at two different HomeNodes, 5 per node. Any thoughts would be greatly appreciated!! Thank you! Please let me know if this description is not clear.

Hi, In the modell I'm working on I have a set of sources that generate different types of entities and two workers that have to grab those entities and trasport then to another node. The decision of which source is unloaded first is defined by a specific probability distribution. However, I don´t know where to define this decision to route the worker. Could someone please help?

Hi all, I've got a vehicle on a fixed route that has a capacity greater than one. Each entity has a loading and unloading time of 15 seconds. Now I want to let the vehicle dwell for 20 seconds at a node, but only if it has at least one pick-up or drop-off. When there is no pick-up or drop-off, there is no dwell time. So, if the vehicle loads or unloads only one entity it takes 20 seconds. But loading/unloading multiple entities at one node takes the loading/unloading time required. For a pick-up I can dwell only if the RidePickUpQueue of the current node is > 0. For a drop-off I'm however clueless what to put in the "dwell only if" How to implement this logic? Thanks!

Hi, there. I'm very interested in Customizing objects. What I'm trying to customize is a vehicle which has more than one station. I have added some stations on the vehicle and tried an entity is stored in that new station when the vehicle picks up an entity. I know there is a ridestation in the standard vehicle. So, my plan is, first, entities are stored in ridestation then it goes to new stations I made, and when the vehicle arrives at destination node, the entities move to RideStation again , then drop off. are there any process logic to do that? Thank you for your help. Jay.

Hi I am trying to create a model that the vehicle can pick up entities from different location based on the capacity of the Track. For now, my model will be stuck whenever the Track is full. Based on my model, I have attached a picture below. The Transfercar2 will pick up an entity from extrusion2 and drop it off at Track_2A, or pick up an entity from extrusion1 and drop it off at Track_3A. However, the transfercar2 does not know the capacity of the Track. I wonder how to do an add-on process or any other methods could fix this problem. As a result, if the Track_3A is full, the transfercar2 will go to extrusion2 to pick up an entity and drop it off at Track_2A, if the Track_2A is full, the transfercar2 will go to extrusion 1 to pick up an entity and drop it off at Track_3A. (On the picture, Track_3A is above Track_2A) Thank you.

Hey, guys. Quick question: Can a vehicle from a model enter another model within the same project? I have a warehouse as a parent model and I need my forklift (vehicle) to enter another model while carrying an entity. I tried setting a transporter reference property, but without much success. Any sugestions? Thanks.

Feature request: Vehicle can pick up and drop off things(Entity)at (x,y,z) in free space , NOT node. This is especially useful to model battle field rescue work, when wounded soldier was randomly created in a zone (not on nodes). thanks

Hello Simio-Community, I'm trying to make a process to reserve a vehicule at a server until all the entities he was carrying are ready. I used this proces that works good except if I want my vehicles to follow a time path between source/server/sink/source. Do you have an idea of how I could change the process model to make my vehicles follow a timepath and still keep being reserved by my server ? Thank you in advance, ReserveVehicleWithMuliCapacity.spfx

Hello, I was wondering if it is possible to change the vehicle initial home node during the simulation. In my model , I want to vehicle to park at home after his work, but in the middle of the simulation I want him to go wait in another place. Is it possible ?

I am building a model of a distribution network. There are two separate types of vehicles in my system. Steel trucks which transport entities from the source to the distribution centers, and boom trucks which transport entities on the final leg from the distribution centers to the sinks. Each of my distribution centers has boom trucks parked at the output node with the exception of "ElktonStagingYard" which should have no trucks parked at the output node. Each time an entity arrives at "ElktonStagingYard", a boom truck should travel from the nearest distribution center, "RockyMountDC", to "ElktonStagingYard" and then to the customer. How can I make this happen? I have tried to build a path from "RockyMountDC" to "ElktonStagingYard" but this seems to mess up vehicle routing since I want the output node at each distribution center's outbound routing logic to be By Link Weight. I have attached my model. Thank you in advance! MeganVasshCurrentModel - Copy.spfx

In our model, we have a server and vehicles of different capacities entering the server at different points of time. We wish to make the vehicle wait until all the entities carried by the vehicle are unloaded and then processed by the server. Usually the vehicle leaves after it has unloaded. Is there a way to do this? We initially thought of using an add-on process for this. But we're unaware as to how to know the count of entities inside a vehicle, without having a specific numbered reference like vehicle[1].NumberRiders

People often want to model two or more vehicles or entities moving together. There are a few components to this: 1) Seizing the resource appropriately - can be done in processes, but often best done within the vehicle object to make the modeling easier. Here, a vehicle has 4 properties added to support use of an operator. 2) Animating them moving together - the picture below shows use of a second queue animated on the custom vehicle. 3) In some cases, you also need the "driver" to be shown moving. The Attached Animation Speed illustrated below, accomplishes that. I have attached a model that uses a custom vehicle object to model a wheelchair which is "driven" (pushed) by a person to pick up a patient. *********** FOR VERSION 190 AND EARLIER ************************************* VehicleWithDriver.spfx You could use the same approch, possibly with just animation changes, to model something like a truck or forklift that requires a driver. In fact, I just added a second model to that same project that illustrates use in manufacturing (e.g. a lift truck and driver).VehicleWithDriver.spfx VehicleWithDriver.spfx *********************************************************************************** ************** FOR VERSION 191 AND LATER *********************************** VehicleX3.spfx VehicleWithDriver_VehicleX3_Examples.spfx For more information on the update, see the post below. ***********************************************************************************

Dear all, I have this problem: When an transporter is empty, he first has to search if there is an entity somewhere waiting to be picked up with the state: "Scan2=true". I tried to model this with the following process: - First decide if the vehicle is empty? - Search if there is an entity with this state waiting in his own VisitRequestQueue (search in Vehicle.visitrequestqueue for the match condition Candidate.ModelEntity.Scan2 == True) - Search is if there is an entity waiting in the rest of the model (search in Global.VisitRequestQueue for the match condition Candidate.ModelEntity.Scan2 == True) - If he found them, he has to pick them up, otherwise he has to continue with his normal routine. But i get the following error: Could somebody help me out? I also included the model. Model(5.5.2016).spfx

I have 5 parts and 4 servers, each parts has different travel with different sequence. Some parts need to be carried by a cart and I'm having problems assigning carts for parts i want to be carried. can anyone please help me.

Hello, I am trying to model a situation when a truck which comes for unloading and requires a worker or combination for worker to do the task. Basically I want to know how can I engage secondary resource (Worker or forklift) for loading, unloading or even for transit ( transit I require for cranes ). I am a novice in Simio and will be thankful for any kind of help.