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How to connect esp8266 to plc s7-1200 ?

 
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nhllong123
Junior
Junior


Joined: 15 Apr 2018
Posts: 1
PostPosted: 28/02/2019 11:41    Post subject: How to connect esp8266 to plc s7-1200 ? Reply with quote
Hello. I'm Long, i have a project is esp8266 get the data from plc s7-1200 and then put them to webserver. I tried to connect between esp and plc but it's not works. By the way i use settimino library and reference from the website/blog: https://www.instructables.com/id/ARDUINO-HACK-PLC-SIEMENS-THROUGH-LANWIFI-INDUSTRIA/ .
Any ideas?
Help me.
Thanks everyone.
All my project in here: https://drive.google.com/drive/folders/1YL_OqZp5JZ5akcdqszr7pQOXqKywO5ke?usp=sharing
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Rewhy22
Junior
Junior


Joined: 11 Jan 2019
Posts: 2
PostPosted: 17/03/2019 06:28    Post subject: Reply with quote
https://sourceforge.net/p/snap7/discussion/general/thread/e6bb6b66/?limit=25

Code:
DB Get Demo

 Created 19 Nov 2013
 by Davide Nardella
 
------------------------------------------------------------------------
This demo shows how to upload an entire DB from the PLC without
knowing its size in advance.
A DB1 with not more than 1024 byte into the PLC is needed.

- During the loop, try to disconnect the ethernet cable.
  The system will report the error and will reconnect automatically
  when you re-plug the cable.
- For safety, this demo *doesn't write* data into the PLC, try
  yourself to change ReadArea with WriteArea.
- This demo uses ConnectTo() with Rack=0 and Slot=2 (S7300)
  - If you want to connect to S71200/S71500 change them to Rack=0, Slot=0.
  - If you want to connect to S7400 see your hardware configuration.
  - If you want to work with a LOGO 0BA7 or S7200 please refer to the
    documentation and change
    Client.ConnectTo(<IP>, <Rack>, <Slot>);
    with the couple
    Client.SetConnectionParams(<IP>, <LocalTSAP>, <Remote>);
    Client.Connect();
----------------------------------------------------------------------*/
#include <SPI>
#include <Ethernet>
#include "Settimino.h"

// Enter a MAC address and IP address for your controller below.
// The IP address will be dependent on your local network:
byte mac[] = {
  0x90, 0xA2, 0xDA, 0x0F, 0x08, 0xE11 };
 
IPAddress Local(192,168,0,70); // Local Address
IPAddress PLC(192,168,0,71);   // PLC Address

byte Buffer[512];

S7Client Client;
unsigned long Elapsed; // To calc the execution time
//----------------------------------------------------------------------
// Setup : Init Ethernet and Serial port
//----------------------------------------------------------------------
void setup() {
    // Open serial communications and wait for port to open:
    Serial.begin(9600);
     while (!Serial) {
      ; // wait for serial port to connect. Needed for Leonardo only
    }
    // Start the Ethernet Library
    Ethernet.begin(mac, Local);
    // Setup Time, someone said me to leave 2000 because some
    // rubbish compatible boards are a bit deaf.
    delay(2000);
    Serial.println(Ethernet.localIP());
}
//----------------------------------------------------------------------
// Connects to the PLC
//----------------------------------------------------------------------
bool Connect()
{
    int Result=Client.ConnectTo(PLC,
                                  0,  // Rack (see the doc.)
                                  2); // Slot (see the doc.)
    Serial.print("Connecting to ");Serial.println(PLC); 
    if (Result==0)
    {
      Serial.print("Connected ! PDU Length = ");Serial.println(Client.GetPDULength());
    }
    else
      Serial.println("Connection error");
    return Result==0;
}
//----------------------------------------------------------------------
// Dumps a buffer (a very rough routine)
//----------------------------------------------------------------------
void Dump(void *Buffer, int Length)
{
  int i, cnt=0;
  pbyte buf;
 
  if (Buffer!=NULL)
    buf = pbyte(Buffer);
  else 
    buf = pbyte(&PDU.DATA[0]);

  Serial.print("[ Dumping ");Serial.print(Length);
  Serial.println(" bytes ]==========================");
  for (i=0; i<Length; i++)
  {
    cnt++;
    if (buf[i]<0x10)
      Serial.print("0");
    Serial.print(buf[i], HEX);
    Serial.print(" ");
    if (cnt==16)
    {
      cnt=0;
      Serial.println();
    }
  } 
  Serial.println("===============================================");
}
//----------------------------------------------------------------------
// Prints the Error number
//----------------------------------------------------------------------
void CheckError(int ErrNo)
{
  Serial.print("Error No. 0x");
  Serial.println(ErrNo, HEX);
 
  // Checks if it's a Severe Error => we need to disconnect
  if (ErrNo & 0x00FF)
  {
    Serial.println("SEVERE ERROR, disconnecting.");
    Client.Disconnect();
  }
}
//----------------------------------------------------------------------
// Profiling routines
//----------------------------------------------------------------------
void MarkTime()
{
  Elapsed=millis();
}
//----------------------------------------------------------------------
void ShowTime()
{
  // Calcs the time
  Elapsed=millis()-Elapsed;
  Serial.print("Job time (ms) : ");
  Serial.println(Elapsed);   
}
//----------------------------------------------------------------------
// Main Loop
//----------------------------------------------------------------------
void loop()
{
 
  uint16_t Size;
  int Result;
  Size = sizeof(Buffer);
 
  // Connection
  while (!Client.Connected)
  {
    if (!Connect())
      delay(500);
  }
 
  Serial.println("Uploading DB2");
  // Get the current tick
  MarkTime();
  Result=Client.DBGet(2,       // DB Number = 1
                      &Buffer, // Our Buffer
                      &Size);  // In input contains our buffer size
                               // As output contains the data read
  if (Result==0)
  {
    ShowTime();
    Dump(&Buffer, Size);
  }
  else
    CheckError(Result);
   
  delay(500); 
}
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LOHNTOZ11
Junior
Junior


Joined: 28 Apr 2020
Posts: 2
PostPosted: 08/01/2021 15:44    Post subject: Re: How to connect esp8266 to plc s7-1200 ? Reply with quote
nhllong123 wrote:
Hello. I'm Long, i have a project is esp8266 get the data from plc s7-1200 and then put them to webserver. I tried to connect between esp and plc but it's not works. By the way i use settimino library and reference from the website/blog: https://www.instructables.com/id/ARDUINO-HACK-PLC-SIEMENS-THROUGH-LANWIFI-INDUSTRIA/ .
Any ideas?
Help me.
Thanks everyone.
All my project in here: https://drive.google.com/drive/folders/1YL_OqZp5JZ5akcdqszr7pQOXqKywO5ke?usp=sharing


Siemens S7-1200 PLC to Arduino
https://www.youtube.com/watch?v=SFH__4E0CwM
Siemens S7 1200 Modbus TCP/IP Communication with Arduino
https://www.youtube.com/watch?v=c2T2lAMDWGs
Arduino - Read Data from S7 Siemens PLC
https://www.youtube.com/watch?v=pG96O0b76_c
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