got a Problem, hope someone can help me out.
i try to start 4 Task in an Loop but im getting an ArgumentOutOfRangeException:
for (int i = 0; i < 4; i++)
{
//start task with current connection
tasks[i] = Task<byte[]>.Run(() => GetData(i, plcPool[i]));
}
The Loop gets an Overflow because i = 4
if i start the Tasks without a Loop, they run without any Problems:
tasks[0] = Task<byte[]>.Run(() => GetData(0, plcPool[0]));
tasks[1] = Task<byte[]>.Run(() => GetData(1, plcPool[1]));
tasks[2] = Task<byte[]>.Run(() => GetData(2, plcPool[2]));
tasks[3] = Task<byte[]>.Run(() => GetData(3, plcPool[3]));
dont know why? The Tasks GetData from a Siemens PLC via Socket Connection. The PLC Supports up to 32 Connections. I receive 200 Bytes per Connection.
private byte[] GetData(int id, PLC plc)
{
switch (id)
{
case 0:
return plc.ReadBytes(DataType.DataBlock, 50, 0, 200);
case 1:
return plc.ReadBytes(DataType.DataBlock, 50, 200, 200);
case 2:
return plc.ReadBytes(DataType.DataBlock, 50, 500, 200);
case 3:
return plc.ReadBytes(DataType.DataBlock, 50, 700, 200);
case 4:
return plc.ReadBytes(DataType.DataBlock, 50, 900, 117);
default:
return null;
}
}
any idea?
Regards Sam
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