public void SendCyclicData(PhysicalAddress destination, UInt16 frameID, UInt16 cycleCounter, byte[] userData)
{
Trace.WriteLine("Sending cyclic data", null);
MemoryStream mem = new MemoryStream();
//ethernet
Ethernet.Encode(mem, destination, adapter.MacAddress, (Ethernet.Type) 0x8892);
//Profinet Real Time
RT.EncodeFrameId(mem, (RT.FrameIds)frameID);
//user data
if (userData == null)
{
userData = new byte[40];
}
if (userData.Length < 40)
{
Array.Resize <byte>(ref userData, 40);
}
mem.Write(userData, 0, userData.Length);
//RT footer
RT.EncodeRTCStatus(mem, cycleCounter, RT.DataStatus.DataItemValid |
RT.DataStatus.State_Primary |
RT.DataStatus.ProviderState_Run |
RT.DataStatus.StationProblemIndicator_Normal,
RT.TransferStatus.OK);
//Send
Send(mem);
}