private ModbusResult ReadRegister(dynamic parameters)
{
var result = new ModbusResult();
try
{
result.IpAddress = parameters.ipaddress;
result.StartAddress = parameters.start_address;
bool ok = true;
using (TcpClient client = new TcpClient(result.IpAddress, 502))
{
client.SendTimeout = 1000;
var factory = new ModbusFactory();
IModbusMaster master = factory.CreateMaster(client);
master.Transport.Retries = 0;
master.Transport.ReadTimeout = 300;
master.Transport.WriteTimeout = 300;
//if (!client.ConnectAsync(result.IpAddress, 502).Wait(1000))
//{
// // connection failure
// ok = false;
//}
if (ok)
{
ushort startAddress = (ushort)result.StartAddress;
ushort numInputs = (ushort)int.Parse(parameters.number_of_points);
bool[] inputs = master.ReadInputs(0, startAddress, numInputs);
for (int i = 0; i < numInputs; i++)
{
result.data.Add(inputs[i]);
if (parameters.with_html == true)
{
result.ApiCall = Request.Url.SiteBase + $"/api/modbus/{parameters.ipaddress}/{parameters.start_address}/{parameters.number_of_points}";
result.BitsStringForHtml += $"no {i} = {(inputs[i] ? "1" : "0")}<br />\r\n";
}
result.HasData = true;
}
}
}
}
catch (Exception ex)
{
log.Error(ex);
result.HasError = true;
result.ErrorMessage = ex.Message + Environment.NewLine + ex.StackTrace;
}
result.serverTime = DateTime.Now;
return(result);
}
private dynamic HandlePost(dynamic parameters)
{
parameters.ipaddress = this.Request.Form["IpAddress"];
parameters.start_address = this.Request.Form["StartAddress"];
parameters.number_of_points = this.Request.Form["CountOfInputs"];
parameters.with_html = true;
ModbusResult r = ReadRegister(parameters);
return(View["modbus", r]);
}
public ModbusRestApi()
{
Get["ModbusFormView", "/modbus/{ipaddress}"] = parameters => View["modbus", new ModbusApiResult()
{
IpAddress = parameters.ipaddress
}];
Post["ModbusFormView", "/modbus"] = parameters => HandlePost(parameters);
Get["ReadModbusData", "/api/modbus/{ipaddress}/{start_address}/{number_of_points}"] = parameters =>
{
ModbusResult r = ReadRegister(parameters);
ModbusApiResult rr = new ModbusApiResult()
{
data = r.data,
IpAddress = r.IpAddress,
StartAddress = r.StartAddress,
ErrorMessage = r.ErrorMessage
};
var json = Response.AsJson(rr);
return(json);
};
}