UInt16[] ReadRegisters(MBFunction func, Int32 addr, UInt16 count)
{
var cmd = new ModbusEntity();
cmd.Function = func;
var buf = new Byte[4];
buf.WriteUInt16(0, addr);
buf.WriteUInt16(2, count);
cmd.Data = buf;
var rs = Process(cmd, 1 + count * 2);
if (rs == null)
{
return(null);
}
count = rs.Data[0];
if (1 + count > rs.Data.Length)
{
count = (UInt16)(rs.Data.Length - 1);
}
var ds = new UInt16[count / 2];
for (var i = 0; i < ds.Length; i++)
{
ds[i] = rs.Data.ReadUInt16(1 + i * 2);
}
return(ds);
}
public ModbusCollectDevice(ITransport transport, byte host, MBFunction function)
{
if (transport == null)
{
throw new ArgumentNullException(nameof(transport));
}
if (base.Transport == null)
{
base.Transport = transport;
}
if (_master == null)
{
_master = new ModbusMaster
{
Transport = base.Transport,
Host = host
#if DEBUG
,
EnableDebug = true
#endif
};
}
this.Host = host;
this.Function = function;
Registers = new List <int>();
Values = new List <ushort>();
}
Boolean[] ReadInputs(MBFunction func, Int32 addr, UInt16 count)
{
var cmd = new ModbusEntity
{
Function = func
};
var buf = new Byte[4];
buf.WriteUInt16(0, addr);
buf.WriteUInt16(2, count);
cmd.Data = buf;
var rLen = 1 + count / 8;
if (count % 8 != 0)
{
rLen++;
}
var rs = Process(cmd, rLen);
if (rs == null || rs.Data == null || rs.Data.Length < 1)
{
return(null);
}
// 特殊处理单个读取，提高效率
if (count == 1)
{
return new Boolean[] { rs.Data[1] == 1 }
}
;
var flags = new Boolean[count];
// 元素存放于m字节n位
Int32 m = 0, n = 0;
for (var i = 0; i < flags.Length && 1 + m < rs.Data.Length; i++)
{
if (((rs.Data[1 + m] >> n) & 0x01) == 1)
{
flags[i] = true;
}
if (++n >= 8)
{
m++;
n = 0;
}
}
return(flags);
}
