private static bool TryParseAddressFmt2(string src, out ModbusRegion region, out ushort addr)
{
// very old offset format
region = ModbusRegion.HoldingRegisters;
addr = 1;
if (!int.TryParse(src.Trim().Replace("_", ""), out int num))
{
return(false);
}
if (num < 10_000)
{
region = ModbusRegion.Coils;
num -= 1;
}
if ((num > 10_000) && (num < 30_000))
{
region = ModbusRegion.DiscreteInputs;
num -= 100_001;
}
if ((num > 30_000) && (num < 40_000))
{
region = ModbusRegion.InputRegisters;
num -= 300_001;
}
if ((num > 40_000) && (num < 50_000))
{
region = ModbusRegion.HoldingRegisters;
num -= 400_001;
}
if ((num < 0) || num > ushort.MaxValue)
{
return(false);
}
addr = (ushort)num;
return(true);
}
private static bool TryParseAddressFmtCoDeSys(string src, out ModbusRegion region, out ushort addr)
{
// CoDeSys addr format ex.: %MW32768 %MW32768.16 %MW32768.16
region = ModbusRegion.HoldingRegisters;
addr = 1;
bool isNum(char c) => c >= 0x30 && c <= 0x39;
var a = src.Trim().Replace("%", "").ToUpper();
var r = new Regex(@"^[MIQ0]+[A-Z]*[\.0-9]+$");
if ((!r.IsMatch(a)) || (a.Length > 11) || (a.Length < 2))
{
return(false);
}
var i = 1;
for (; i < 5; i++)
{
if (isNum(a[i]))
{
break;
}
}
var regSrc = a.Substring(0, i);
var aSrc = a.Substring(i).Split('.');
// получим адрес
if (aSrc.Length > 1)
{
aSrc[0] += aSrc[1].PadLeft(2, '0');
}
if (!ushort.TryParse(aSrc[0], out addr))
{
return(false);
}
var isInput = regSrc.StartsWith("I");
// получим регион
if (regSrc.Length > 1)
{
region = isInput ? ModbusRegion.InputRegisters : ModbusRegion.HoldingRegisters;
// Корректировка адреса по флагу размера
switch (regSrc[1])
{
case 'D':
addr *= 2;
break;
case 'L':
addr *= 4;
break;
}
}
else
{
region = isInput ? ModbusRegion.DiscreteInputs : ModbusRegion.Coils;
}
return(true);
}
private static bool TryParseAddress(string src, out ModbusRegion region, out ushort addr) => TryParseAddressFmtCoDeSys(src, out region, out addr) || TryParseAddressFmt1(src, out region, out addr) || TryParseAddressFmt2(src, out region, out addr);
