Monday, November 17, 2014

Read Data from N7 Files of Allen-Bradley MicroLogix 1000




Read data from N7 files with microsoft visual C# and DF1 protocol of Allen-Bradley Micrologic 1000. DF1 communication using serial port with setting: baud rate=9600, data bits=8, parity=none, stopbits=one and CRC 16.

N7 Files Location of Allen-Bradley MicroLogix 1000

Download Project File for C#, click here

PortName in C# with your serial port number.
Set PortName in C# with your serial port number

Download Ladder Programming for Allen-Bradley Micrologic 1000, click here

PLC Ladder Programming for Allen-Bradley MicroLogic 1000

Video about Read data From Allen-Bradley MicroLogix 1000

Microsoft visual c# code for Read Data from Allen-Bradley PLC :
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;

namespace DF1Read
{
    public partial class Form1 : Form
    {
        int OrderIncrement = new Random().Next(1, 127);
        private byte[] CommandRead = new byte[17];
        int value;

        public Form1()
        {
            InitializeComponent();
        }

        public void ReadN7(byte StartingElementNumber, int numberOfRead)
        {
            if (numberOfRead < 1)
                return;

            if (!serialPort1.IsOpen)
                serialPort1.Open();

            if (OrderIncrement < 65535)
            {
                OrderIncrement += 1;
            }
            else
            {
                OrderIncrement = 1;
            }

            CommandRead[0] = 16;
            CommandRead[1] = 2;
            CommandRead[2] = 0;
            CommandRead[3] = 0;
            CommandRead[4] = 0xf;
            CommandRead[5] = 0;
            CommandRead[6] = (byte)(OrderIncrement & 255);
            CommandRead[7] = (byte)(OrderIncrement >> 8);
            CommandRead[8] = 0xa1;

            //* Number of bytes to read -
            CommandRead[9] = (byte)(numberOfRead * 2);
            //* File Number
            CommandRead[10] = 7;
            //* File Type
            CommandRead[11] = 137;
            //N
            //Starting Element Number
            CommandRead[12] = StartingElementNumber;


            byte[] dataforcrc = new byte[11];
            for (int i = 0; i <= 10; i += 1)
            {
                dataforcrc[i] = CommandRead[2 + i];
            }
            int CheckSumCalc;
            CheckSumCalc = CalculateCRC16(dataforcrc);

            CommandRead[13] = 16;
            CommandRead[14] = 3;
            CommandRead[15] = (byte)(CheckSumCalc & 255);
            CommandRead[16] = (byte)(CheckSumCalc >> 8);

            byte[] ACKSequence = {16,6};
            if (serialPort1.IsOpen)
            {
                serialPort1.Write(ACKSequence, 0, 2);

                serialPort1.Write(CommandRead, 0, CommandRead.Length);
            }

        }

        private int CalculateCRC16(byte[] DataInput)
        {
            int iCRC = 0;
            byte bytT = 0;
            for (int i = 0; i <= DataInput.Length - 1; i++)
            {
                bytT = (byte)((iCRC & 0xff) ^ DataInput[i]);
                iCRC = (int)((iCRC >> 8) ^ CRC16table[bytT]);

            }
            bytT = (byte)((iCRC & 0xff) ^ 3);
            iCRC = (int)((iCRC >> 8) ^ CRC16table[bytT]);

            return iCRC;
        }

        int[] CRC16table = {0x0,0xc0c1,0xc181,0x140,0xc301,0x3c0,0x280, 0xc241,
                       0xc601, 0x6c0, 0x780, 0xc741, 0x500, 0xc5c1, 0xc481, 0x440,
                       0xcc01, 0xcc0, 0xd80, 0xcd41, 0xf00, 0xcfc1, 0xce81, 0xe40,
                       0xa00, 0xcac1, 0xcb81, 0xb40, 0xc901, 0x9c0, 0x880,
                       0xc841, 0xd801, 0x18c0, 0x1980, 0xd941, 0x1b00, 0xdbc1, 0xda81,
                       0x1a40, 0x1e00, 0xdec1, 0xdf81, 0x1f40,
                       0xdd01, 0x1dc0, 0x1c80, 0xdc41, 0x1400, 0xd4c1, 0xd581, 0x1540,
                       0xd701, 0x17c0, 0x1680, 0xd641, 0xd201, 0x12c0, 0x1380, 0xd341,
                       0x1100, 0xd1c1, 0xd081, 0x1040, 0xf001, 0x30c0, 0x3180, 0xf141,
                       0x3300, 0xf3c1, 0xf281, 0x3240, 0x3600, 0xf6c1, 0xf781, 0x3740,
                       0xf501, 0x35c0, 0x3480, 0xf441, 0x3c00, 0xfcc1, 0xfd81,
                       0x3d40, 0xff01, 0x3fc0, 0x3e80, 0xfe41, 0xfa01, 0x3ac0, 0x3b80,
                       0xfb41, 0x3900, 0xf9c1, 0xf881, 0x3840, 0x2800,
                       0xe8c1, 0xe981, 0x2940, 0xeb01, 0x2bc0, 0x2a80, 0xea41, 0xee01,
                       0x2ec0, 0x2f80, 0xef41, 0x2d00, 0xedc1, 0xec81, 0x2c40, 0xe401,
                       0x24c0, 0x2580, 0xe541, 0x2700, 0xe7c1, 0xe681, 0x2640, 0x2200,
                       0xe2c1, 0xe381, 0x2340, 0xe101, 0x21c0, 0x2080, 0xe041, 0xa001,
                       0x60c0, 0x6180, 0xa141, 0x6300, 0xa3c1, 0xa281, 0x6240, 0x6600,
                       0xa6c1, 0xa781, 0x6740, 0xa501, 0x65c0, 0x6480, 0xa441, 0x6c00,
                       0xacc1, 0xad81, 0x6d40, 0xaf01, 0x6fc0, 0x6e80, 0xae41, 0xaa01,
                       0x6ac0, 0x6b80, 0xab41, 0x6900, 0xa9c1, 0xa881, 0x6840, 0x7800,
                       0xb8c1, 0xb981, 0x7940, 0xbb01, 0x7bc0, 0x7a80, 0xba41, 0xbe01,
                       0x7ec0, 0x7f80, 0xbf41, 0x7d00, 0xbdc1, 0xbc81, 0x7c40, 0xb401,
                       0x74c0, 0x7580, 0xb541, 0x7700, 0xb7c1, 0xb681, 0x7640, 0x7200,
                       0xb2c1, 0xb381, 0x7340, 0xb101, 0x71c0, 0x7080, 0xb041, 0x5000,
                       0x90c1, 0x9181, 0x5140, 0x9301, 0x53c0, 0x5280, 0x9241, 0x9601,
                       0x56c0, 0x5780, 0x9741, 0x5500, 0x95c1, 0x9481, 0x5440, 0x9c01,
                       0x5cc0, 0x5d80, 0x9d41, 0x5f00, 0x9fc1, 0x9e81, 0x5e40, 0x5a00,
                       0x9ac1, 0x9b81, 0x5b40, 0x9901, 0x59c0, 0x5880, 0x9841, 0x8801,
                       0x48c0, 0x4980, 0x8941, 0x4b00, 0x8bc1, 0x8a81, 0x4a40, 0x4e00,
                       0x8ec1, 0x8f81, 0x4f40, 0x8d01, 0x4dc0, 0x4c80, 0x8c41, 0x4400,
                       0x84c1, 0x8581, 0x4540, 0x8701, 0x47c0, 0x4680, 0x8641, 0x8201,
                       0x42c0, 0x4380, 0x8341, 0x4100, 0x81c1, 0x8081, 0x4040};

        int BytesToRead;
        byte[] BytesRead = new byte[256];
        private System.Collections.ObjectModel.Collection ReceivedDataPacket = new System.Collections.ObjectModel.Collection();
        private void serialPort1_DataReceived(object sender, System.IO.Ports.SerialDataReceivedEventArgs e)
        {
            BytesToRead = serialPort1.BytesToRead;
            serialPort1.Read(BytesRead, 0, BytesToRead);
            this.Invoke(new EventHandler(ReadUpdate));
        }

        public void ReadUpdate(object sender, System.EventArgs e)
        {
            for (int i = 0; i <= BytesToRead - 1; i += 1)
            {
                ReceivedDataPacket.Add(BytesRead[i]);
            }

            if (ReceivedDataPacket.Count == CommandRead[9] + 14)
            {
                byte[] ACKSequence = { 16, 6 };
                if (serialPort1.IsOpen) serialPort1.Write(ACKSequence, 0, 2);

                    byte totalcrc = (byte)(ReceivedDataPacket.Count - 9);
                    byte[] dataforcrc = new byte[totalcrc + 1];
                    for (int i = 0; i <= totalcrc; i += 1)
                    {
                        dataforcrc[i] = ReceivedDataPacket[4 + i];
                    }
                    int CheckSumCalc;
                    CheckSumCalc = CalculateCRC16(dataforcrc);
                    byte crclow = 0;
                    byte crchigh = 0;
                    crclow = (byte)(CheckSumCalc & 255);
                    crchigh = (byte)(CheckSumCalc >> 8);

                    if (ReceivedDataPacket[ReceivedDataPacket.Count - 2] == crclow & ReceivedDataPacket[ReceivedDataPacket.Count - 1] == crchigh)
                    {
                        value = (ReceivedDataPacket[11] * 256) + ReceivedDataPacket[10];                  
                        if ((value & 1) == 1) label1.BackColor = Color.Orange; else label1.BackColor = Color.White;
                        if ((value & 2) == 2) label2.BackColor = Color.Orange; else label2.BackColor = Color.White;
                        if ((value & 4) == 4) label3.BackColor = Color.Orange; else label3.BackColor = Color.White;
                        if ((value & 8) == 8) label4.BackColor = Color.Orange; else label4.BackColor = Color.White;
                        if ((value & 16) == 16) label5.BackColor = Color.Orange; else label5.BackColor = Color.White;
                        if ((value & 32) == 32) label6.BackColor = Color.Orange; else label6.BackColor = Color.White;
                        if ((value & 64) == 64) label7.BackColor = Color.Orange; else label7.BackColor = Color.White;
                        if ((value & 128) == 128) label8.BackColor = Color.Orange; else label8.BackColor = Color.White;
                }
            }
        }

        private void timer1_Tick(object sender, EventArgs e)
        {
            ReceivedDataPacket.Clear();
            ReadN7(0,1);
        }

        private void Form1_FormClosing(object sender, FormClosingEventArgs e)
        {
            if (serialPort1.IsOpen) serialPort1.Close();
        }
    }

}



Labels:






Newer Post Older Post Home

You may also like these ebook:

Get Free PLC eBook directly sent to your email,
and email subscription to program-plc.blogspot.com




We hate SPAM. Your information is never sold or shared with anyone.

Your Email Will Be 100% Secured !