Project DescriptionThis project is dedicated to use S7-Plc's from every .Net language. It's possible to read and write variables in a very easy way.
There will be controls to generate variable-list and something more.
Generally it works.
Here are some samples how to use:
// create the plc-object
S7.PLC plc = new PLC(CPU_Type.S7300, "192.168.1.130", 0, 2);
// open the plc S7300-type
ErrorCode errCode = plc.Open();
// set bit 0 in marker-byte 20
plc.Write("M20.0", 1);
// read the word-value in DataBlock 100 Word-Position 40
UInt16 b1 = (UInt16)plc.Read("DB100.DBW40");
// close the plc
plc.Close();
// create the plc-object
S7.PLC plc = new PLC(CPU_Type.S7300, "192.168.1.130", 0, 2);
// open the plc S7300-type
ErrorCode errCode = plc.Open();
// set bit 0 in marker-byte 20
plc.Write("M20.0", 1);
// read the word-value in DataBlock 100 Word-Position 40
UInt16 b1 = (UInt16)plc.Read("DB100.DBW40");
// close the plc
plc.Close();
You define a DataBlock in the plc like:
Then you add a struct into your .Net application that is similiar to the DB in the plc:
public struct testStruct
{
public bool varBool0;
public bool varBool1;
public bool varBool2;
public bool varBool3;
public bool varBool4;
public bool varBool5;
public bool varBool6;
public byte varByte0;
public byte varByte1;
public ushort varWord0;
public double varReal0;
public bool varBool7;
public double varReal1;
public byte varByte2;
public UInt32 varDWord;
}
then you add the code to read or write the complete struct
// reads a struct from DataBlock 1
testStruct test = (testStruct)plc.ReadStruct(typeof(testStruct), 1);
// change one item
test.varDWord += 1;
// and writes it to DB2
S7.ErrorCode code = plc.WriteStruct(test, 2);
As you can see, it's very simple to read and write values in the plc of SIEMENS S7300-400.
I could'nt check this on S7200. If anyone can do this I would be very glad about that.
In future there will be some samples in the source-code.
This is the first of my controls working with the SIEMENS-plc.
You can see the input and outputs of one DI/DO module.
Here are some in and output controls for the S7300 family.
