public static ModbusMessage decodeModbusMessage(String msg)//读取消息
{
ModbusMessage res = new ModbusMessage();
byte[] cmd = StringByteHelper.StringToBytes(msg);
if (!check_modbus_message(cmd))
{
return(null);
}
res.Dev = cmd[3];
res.MsgType = ModbusMessage.byteToMessageType(cmd[4]);
int len = cmd[2] - 3;
byte[] data = new byte[len];
for (int i = 0; i < len; i++)
{
data[i] = cmd[i + 5];
}
String s = Encoding.Default.GetString(data);
Hashtable map = new Hashtable();
String[] words = s.Split(';');
String[] parts;
for (int i = 0; i < words.Length; i++)
{
if (words[i].Length == 0)
{
continue;
}
parts = words[i].Split('=');
if (parts.Length != 2)
{
return(null);
}
map.Add(parts[0], parts[1]);
}
res.Data = map;
return(res);
}
