88 lines
2.7 KiB
C#
88 lines
2.7 KiB
C#
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using Modbus.Device; // NModbus namespace
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using System.Net.Sockets;
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internal class Program
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{
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// Configuration
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private const string hostname = "127.0.0.1"; // Replace with your Watlow F4 IP
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private const int port = 502;
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private const byte slaveId = 0;
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// Register 100 should be the first read-only input on the F4
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// Value 99 or 100 should work depending on zero indexing
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private const ushort loadRegister = 99;
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private static void Main(string[] args)
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{
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TcpClient tcpClient = null;
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ModbusIpMaster master = null;
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try
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{
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// Initialize connection
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tcpClient = new TcpClient(hostname, port);
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master = ModbusIpMaster.CreateIp(tcpClient);
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// Monitor continuously
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while (true)
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{
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// Check for Escape key press
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if (Console.KeyAvailable)
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{
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ConsoleKeyInfo key = Console.ReadKey(true);
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if (key.Key == ConsoleKey.Escape)
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{
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Console.WriteLine("Escape pressed. Exiting...");
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break;
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}
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}
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try
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{
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// Read load value (holding register)
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ushort[] registers = master.ReadHoldingRegisters(slaveId, loadRegister, 1);
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int load = registers[0];
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// Display load info
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DisplayLoadInfo(load);
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// Pause before next read
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Thread.Sleep(1000);
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}
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catch (Exception ex)
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{
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Console.WriteLine($"Error: {ex.Message}");
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break;
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}
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}
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}
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catch (Exception ex)
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{
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Console.WriteLine($"Initialization error: {ex.Message}");
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}
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finally
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{
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// Clean up
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master?.Dispose();
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tcpClient?.Close();
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}
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}
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private static void DisplayLoadInfo(int load)
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{
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Console.Clear(); // Clears the console
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// Assume load is 0-65535 for 0.00-100.00% (16-bit range)
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int percent = (int)load / 65535 * 100;
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int barLength = (int)(percent / 2); // Scale to 50 chars for console
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Console.WriteLine($"Load Value: {load}");
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Console.WriteLine($"Load Percentage: {percent:F2}%");
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Console.Write("Bar Graph: [");
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Console.Write(new string('=', barLength));
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Console.Write(new string(' ', 50 - barLength));
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Console.WriteLine("]");
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Console.WriteLine("\nHold ESC to exit.");
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}
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}
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