在flexsim的连接中，由于D连接被定义为“情景敏感”的链接，所以在教程中和实用中提及的较少，本人在此小举一例以抛砖引玉。鉴于本人初学，所以言论尽显幼稚，敬请各位谅解。本人所举之例是D连接在网络节点上的应用。在用户指南中有这样一段描述“ NetworkNodes can also have virtual exits. Above it was mentioned that when a TaskExecuter finishes a travel task, it becomes inactive at the destination NetworkNode. Once it gets another travel task, it must go back to the original NetworkNode it was at in order to get back onto the network. Virtual exits allow you to specify alternative nodes that the TaskExecuter can travel to in getting back onto the network. Virtual exits are created between NetworkNodes. They are created by holding down the 'D' key and dragging from one NetworkNode to another”这就是说网络节点的虚拟出口用的就是D连接，附件中的例子就是使用的节点的虚拟出口，从而实现了搬用工在货架上放完临时实体后并没有原路返回，而是从另外一个节点返回。
