Hi, I'm working on a project with a sensor connected to an arduino which sends the data from an end device XBee S1 in API mode to a coordinator XBee and handles the data in Visual Studio using C#. The data gets send when a flag is raised. The coordinator can receive the data just fine but I'm having issues when writing data from the coordinator and broadcast it to the end device(I eventually want to have multiple end devices connected). I want to have the coordinator send a frame to the end devices every X seconds but when writing data, it is for some reason causing bytes to be received into the XBee coordinator which leads to the data received event to be called and it eventually reads a 0x7E byte and thinks it is an XBee frame and then causes an out of bounds error when I try to parse the incoming frame. Anyone know of any solution or possible causes on the data being received by the coordinator even though no data has been sent by the end device? Thanks.