Hello.
I have a device that supports modbus tcp connections that is currently operating. Now when I attempt get data from the device using this:
`
try
{
using (var sock = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp))
{
var ip = IPAddress.Parse("/IP of the device/");
var address = new IPEndPoint(ip, /device port/);
sock.Connect(address);
if (sock.Connected)
{
Console.WriteLine($"Connected to {ip}:{address.Port}");
var factory = new ModbusFactory();
IModbusMaster master = factory.CreateMaster(sock);
byte id = 1;
ushort start = 1;
ushort quantityOfRegisters = 10;
Console.WriteLine($"Reading registers starting from {start}, quantity: {quantityOfRegisters}");
var result = master.ReadHoldingRegisters(id, start, quantityOfRegisters);
if (result != null && result.Length > 0)
{
for (int i = 0; i < result.Length; i++)
{
Console.WriteLine($"Register {(start + i)}: {result[i]}");
}
}
else
{
Console.WriteLine("No valid data received.");
}
}
}
}
catch (SocketException ex)
{
Console.WriteLine($"Socket error: {ex.Message}");
}
catch (Exception ex)
{
Console.WriteLine($"Error: {ex.Message}");
}
`
When it reaches the master.ReadHoldingRegisters(id, start, quantityOfRegisters); it just hangs with no response.
I tested the credentials I supply with a Modbus tester and there i do get the values I am expecting. This is the tester I used:
https://www.powerhud.com/en/free-modbus-tester/
And this is the result:
Anyone have any ideas as to what I am doing wrong?
Hello.
I have a device that supports modbus tcp connections that is currently operating. Now when I attempt get data from the device using this:
`
try
{
using (var sock = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp))
{
var ip = IPAddress.Parse("/IP of the device/");
var address = new IPEndPoint(ip, /device port/);
}
catch (SocketException ex)
{
Console.WriteLine($"Socket error: {ex.Message}");
}
catch (Exception ex)
{
Console.WriteLine($"Error: {ex.Message}");
}
`
When it reaches the
master.ReadHoldingRegisters(id, start, quantityOfRegisters);it just hangs with no response.I tested the credentials I supply with a Modbus tester and there i do get the values I am expecting. This is the tester I used:
https://www.powerhud.com/en/free-modbus-tester/
And this is the result:
Anyone have any ideas as to what I am doing wrong?