Snap7 and Qt ,PLC communication

ZekDe

Thank you mmiacca ,I can wait and also How did you manage it if you explain I will be so happy.

ZekDe

Are you able to do it with mingw 5.3.0?

ZekDe

Hi mmiacca ,could you give me an example ?,I need like you ssay,I need easy start

mmiacca

Hi (excuse my english please)

Here is the project file to compile a gui example with snap7, no libraries, all in one..

#-------------------------------------------------
#
# Project created by QtCreator 2016-11-17T17:37:17
#
#-------------------------------------------------

QT += core gui network

greaterThan(QT_MAJOR_VERSION, 4): QT += widgets

TARGET = test1

TEMPLATE = app

# Desde http://stackoverflow.com
# Finally, CONFIG(debug, debug|release) evaluates to true if CONFIG contains "debug" but not "release", or if it contains both
# "debug" and "release" but "release" doesn't appear after the last occurrence of "debug".
CONFIG(debug, debug|release){
 DESTDIR = $$_PRO_FILE_PWD_/../debug
 #DEFINES += QT_NO_DEBUG
}
else{
 DESTDIR = $$_PRO_FILE_PWD_/../release
}

win32:LIBS += C:\Qt\Tools\mingw530_32\i686-w64-mingw32\lib\libws2_32.a
win32:LIBS += C:\Qt\Tools\mingw530_32\i686-w64-mingw32\lib\libwinmm.a

INCLUDEPATH += ../snap7-full-1.4.1/release/Wrappers/c-cpp/ \
               ../snap7-full-1.4.1/src/lib/ \
               ../snap7-full-1.4.1/src/core/ \
               ../snap7-full-1.4.1/src/sys/

SOURCES += main.cpp\
 mainwindow.cpp \
    client.cpp \
    ../snap7-full-1.4.1/release/Wrappers/c-cpp/snap7.cpp \
    ../snap7-full-1.4.1/src/core/s7_client.cpp \
    ../snap7-full-1.4.1/src/core/s7_isotcp.cpp \
    ../snap7-full-1.4.1/src/core/s7_micro_client.cpp \
    ../snap7-full-1.4.1/src/core/s7_partner.cpp \
    ../snap7-full-1.4.1/src/core/s7_peer.cpp \
    ../snap7-full-1.4.1/src/core/s7_server.cpp \
    ../snap7-full-1.4.1/src/core/s7_text.cpp \
    ../snap7-full-1.4.1/src/lib/snap7_libmain.cpp \
    ../snap7-full-1.4.1/src/sys/snap_msgsock.cpp \
    ../snap7-full-1.4.1/src/sys/snap_sysutils.cpp \
    ../snap7-full-1.4.1/src/sys/snap_tcpsrvr.cpp \
    ../snap7-full-1.4.1/src/sys/snap_threads.cpp

HEADERS += mainwindow.h \
    client.h \
    ../snap7-full-1.4.1/release/Wrappers/c-cpp/snap7.h \
    ../snap7-full-1.4.1/src/core/s7_client.h \
    ../snap7-full-1.4.1/src/core/s7_firmware.h \
    ../snap7-full-1.4.1/src/core/s7_isotcp.h \
    ../snap7-full-1.4.1/src/core/s7_micro_client.h \
    ../snap7-full-1.4.1/src/core/s7_partner.h \
    ../snap7-full-1.4.1/src/core/s7_peer.h \
    ../snap7-full-1.4.1/src/core/s7_server.h \
    ../snap7-full-1.4.1/src/core/s7_text.h \
    ../snap7-full-1.4.1/src/core/s7_types.h \
    ../snap7-full-1.4.1/src/lib/snap7_libmain.h \
    ../snap7-full-1.4.1/src/sys/snap_msgsock.h \
    ../snap7-full-1.4.1/src/sys/snap_platform.h \
    ../snap7-full-1.4.1/src/sys/snap_sysutils.h \
    ../snap7-full-1.4.1/src/sys/snap_tcpsrvr.h \
    ../snap7-full-1.4.1/src/sys/snap_threads.h \
    ../snap7-full-1.4.1/src/sys/sol_threads.h \
    ../snap7-full-1.4.1/src/sys/unix_threads.h \
    ../snap7-full-1.4.1/src/sys/win_threads.h

FORMS += mainwindow.ui

But the full project is here https://drive.google.com/file/d/1AWX3xe00D-WWrQwFGi18juR8KBkYkB7V/view?usp=sharing ... also the snap7 project... i'm using qt 5.9.2 with mingw... install it with default options...

Hope this help

ZekDe

This post is deleted!

Daminos

Hi,

I'am intersting of this to integrate Snap7 with QtCreator,
I test your example "test1", it's compiled, but when run the "test.exe" : there is nothing !!
Have you an idea please ?
thank you in advanced

mmiacca

@Daminos Nothing means? the windos has only two widget that show variables from plc, put a breakpoint in the following function...

void MainWindow::scan()
{
//ui->log->setText(logMessage);

union U
{
    unsigned char x[4];
    float f;
} u;

int err = Client->DBRead(380, 160, 4, u.x);
unsigned char aux;

aux = u.x[0];
u.x[0] = u.x[3];
u.x[3] = aux;

aux = u.x[1];
u.x[1] = u.x[2];
u.x[2] = aux;

if(!err)
{
    ui->value_0->setValue(u.f);
    ui->value_1->setValue(u.f);

    ui->value_0->setStyleSheet("");
    ui->value_1->setStyleSheet("");
}
else
{
    ui->value_0->setValue(0);
    ui->value_1->setValue(0);

    ui->value_0->setStyleSheet("background-color: rgb(255, 0, 0);");
    ui->value_1->setStyleSheet("background-color: rgb(255, 0, 0);");

    // Connection
    int error = CliConnect();
    if(!error)
    {

    };

}

char valor;
err = Client->DBRead(380, 151, 1, &valor);
ui->checkBox->setChecked(valor & 0x01);

}

Daminos

@mmiacca
Thanks a lot, it's worked now :D
I have another question please : are you tested this example with Logo_8 ?
Best regards,

mmiacca

@Daminos good.... i do not test this with logo, only S7-400... do you change the cpu TCP/IP address and slot in the logo and in the code?

Daminos

@mmiacca
I'll test that next week (because I wait for the Logo_8), I'll tel you if it's working ;)
see you !
Best regards,

Daminos2

@mmiacca Hi mmiacca, I tested the connection code with the Logo_8, and it's worked ;)
Best regards,
Daminos