- Wed Nov 16, 2016 5:03 pm
#58218
Hello there!
I have got an Arduino UNO with an Ethernet Shield (W5100) with the following code, to read data out of my PLC
This works fine!
Now I want to try it on my ESP8266 (WittyBoard), so I changed the code at the top to its new environment:
... but that don´t work. Examples like the webserver are working fine on it - no hardware problem.
What could be the problem?
I have got an Arduino UNO with an Ethernet Shield (W5100) with the following code, to read data out of my PLC
Code: Select all
#include <SPI.h>
#include <Ethernet.h>
#include "Settimino.h"
byte mac[] = { 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED }; //MAC
IPAddress ip(192,168,127,14); // Local Address
IPAddress PLC(192,168,127,110); // PLC Address
S7Client Client;
void setup()
{
Serial.begin(9600);
while (!Serial) {
; // wait for serial port to connect. Needed for Leonardo only
}
// Start the Ethernet Library
Ethernet.begin(mac, ip);
delay(200);
Serial.println(Ethernet.localIP());
}
bool Connect()
{
int Result=Client.ConnectTo(PLC,
0, // Rack (see the doc.)
0); // 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;
}
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();
}
}
byte Empfangen(int Zeile) //einzelne Bytes empfangen
{
int Result;
byte Receive;
// Verbinden
while (!Client.Connected)
{
if (!Connect())
delay(500);
}
Result=Client.ReadArea(S7AreaDB, //DB Zugriff
53, // DB Number = 53
Zeile, // Start ab Byte x
1, // Anzahl der Bytes
&Receive); // Ziel
if (Result==0)
{
return Receive;
}
else
CheckError(Result);
}
void loop()
{
Serial.print("Daten aus SPS: ");
Serial.println(Empfangen(20)); //Lese Byte aus DB Zeile 20
Serial.println("");
delay(500);
}
This works fine!
Now I want to try it on my ESP8266 (WittyBoard), so I changed the code at the top to its new environment:
Code: Select all
#include <SPI.h>
#include "Settimino.h"
#include <ESP8266WiFi.h>
char* ssid = "myWIFI";
char* password = "myPassword";
IPAddress ip(192,168,127,14); // Local Address
IPAddress gateway(192,168,127,1);
IPAddress subnet(255,255,255,0);
IPAddress PLC(192,168,127,110); // PLC Address
S7Client Client;
void setup()
{
Serial.begin(115200);
while (!Serial) {
; // wait for serial port to connect. Needed for Leonardo only
}
// Start the WiFi Library
WiFi.mode(WIFI_AP_STA);
WiFi.config(ip, gateway, subnet);
WiFi.begin(ssid, password);
while (WiFi.status() != WL_CONNECTED)
{
delay(500);
Serial.print(".");
}
Serial.println("");
Serial.println("WiFi connected");
Serial.println(WiFi.localIP());
}
bool Connect()
{
int Result=Client.ConnectTo(PLC,
0, // Rack (see the doc.)
0); // 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;
}
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();
}
}
byte Empfangen(int Zeile) //einzelne Bytes empfangen
{
int Result;
byte Receive;
// Verbinden
while (!Client.Connected)
{
if (!Connect())
delay(500);
}
Result=Client.ReadArea(S7AreaDB, //DB Zugriff
53, // DB Number = 53
Zeile, // Start ab Byte x
1, // Anzahl der Bytes
&Receive); // Ziel
if (Result==0)
{
return Receive;
}
else
CheckError(Result);
}
void loop()
{
Serial.print("Daten aus SPS: ");
Serial.println(Empfangen(20)); //Lese Byte aus DB Zeile 20
Serial.println("");
delay(500);
}
... but that don´t work. Examples like the webserver are working fine on it - no hardware problem.
What could be the problem?
