PLCcomForS7 14.1.11

PLCcom for S7: A .NET SDK for Communication with S7 Plcs

The PLCcom library is a highly performant and optimized component especially designed for Java / .Net-Developer to access data provided by a Siemens PLC in the most comfortable way. With PLCcom you can read and write data from a PLC with ease.

What provides PLCCom for S7 SDK?

Depending on the package the library consist purely of Java or .Net files. The driver can be integrated directly as a reference so that no API calls are necessary. PLCcom is platform independent and works on 32 as well as 64bit.

Within the scope of supply are various code examples to illustrate the connection between your application and different controllers. These examples can also be used in your own projects.

In its current version, PLCcom is compatible with S7 controllers (200, 300, 400, 1200, 1500, SoftSPS WinAC RTX as well as Logo! 0BA7 / 0BA8 / 0BA0) as well as CPUs from other manufacturers (e.g. VIPA 100V/200V/300V/300S, etc.) Symbolic access is possible to S7 controllers of the 1200 and 1500 series. The driver will be delivered with Code-Examples, which shows you how easy it is to connect the PLC to your application.

Communication: Serial adapter MPI, Serial adapter PPI, MPI adapter USB, Ethernet TCP/IP, Green Cable (VIPA PLC only)

• The following data types are supported for classic optimized read and write functions:

  • Raw (Byte Array)
  • Bit
  • Byte
  • Word
  • DWord
  • LWord
  • INT
  • DINT
  • LINT
  • Real
  • LReal
  • BCD8
  • BCD16
  • BCD32
  • BCD64
  • Date
  • Time
  • LTime
  • Date_And_Time
  • LDate_And_Time
  • Time_OF_DAY
  • LTime_OF_DAY
  • DTL
  • S5Time
  • Char
  • String
  • S7_String
  • S7_WString

• The following data types are supported for symbolic optimized read and write functions:

  • Array[n..m](read-write access to the complete array or its individual elements)
  • Bool(read-write)
  • Byte(read-write)
  • Char(read-write)
  • Counter(read-write)
  • Date(read-write)
  • Date_And_Time(read-write)
  • DInt(read-write)
  • DWord(read-write)
  • Int(read-write)
  • LDT(read-write)
  • LInt(read-write)
  • LReal(read-write)
  • LTime(read-write)
  • LTime_Of_Day(read-write)
  • LWord(read-write)
  • Real(read-write)
  • S5Time(read-write)
  • SInt(read-write)
  • String(read-write)
  • Time(read-write)
  • Time_Of_Day(read-write)
  • Timer(read-write)
  • UDInt(read-write)
  • UInt(read-write)
  • ULInt(read-write)
  • USInt(read-write)
  • WChar(read-write)
  • WString(read-write)
  • Word(read-write)
  • CREF(read-write access to the complete struct or its individual elements)
  • NREF(read-write access to the complete struct or its individual elements)
  • DTL(read-write access to the complete struct or its individual elements)
  • ErrorStruct(read-write access to the complete struct or its individual elements)
  • IEC_COUNTER(read-write access to the complete struct or its individual elements)
  • IEC_DCOUNTER(read-write access to the complete struct or its individual elements)
  • IEC_LCOUNTER(read-write access to the complete struct or its individual elements)
  • IEC_LTIMER(read-write access to the complete struct or its individual elements)
  • IEC_SCOUNTER(read-write access to the complete struct or its individual elements)
  • IEC_TIMER(read-write access to the complete struct or its individual elements)
  • IEC_UCOUNTER(read-write access to the complete struct or its individual elements)
  • IEC_UDCOUNTER(read-write access to the complete struct or its individual elements)
  • IEC_ULCOUNTER(read-write access to the complete struct or its individual elements)
  • IEC_USCOUNTER(read-write access to the complete struct or its individual elements)
  • Struct(read-access to the complete struct or its individual elements, write access to its individual elements)

• Access via put/get or symbolic addressing

• Reading of data blocks, inputs, outputs, data blocks, flags, timers, counters

• Several operations possible in one function call, each operation returns a detailed return value.

• Simultaneous access to different CPUs possible

• Implemented high-performance access, the required accesses to the PLC are reduced to the absolute minimum.

• Internal help and conversion functions for simple reading and writing of certain PLC data types

• Provision of the PLCcom data server for cyclical read accesses with event-controlled notification of value changes

• Starting and stopping the CPU

• Reading out the serial number and firmware version

• Reading out the key switch position

• Reading LED information

• Reading and setting the PLC time

• Reading the system status list

• Reading the block list

• Reading block lengths

• Backup of blocks

• Restoring blocks

• Restoring blocks under a changed block number

• Deleting blocks

• Output of block details such as code, creation languages, author, etc.

• Sending the connection password

• Reading out the diagnostic data

• AutoConnect

• Asynchronous connection

• and much more.

Note: The previous list is not complete, furthermore there are exclusions depending on the PLC type. A complete list of supported functions depending on PLC type and communication path can be found here: https://www.indi-an.com/help_s7/net/help/index.html

Included in the software package are extensive code examples and tutorials, which illustrate the easy connection between your application and a S7 Plc and can also be used in your projects. For development support, test server and client applications are included in the delivery package.

Prerequisites

To create applications with the toolkit, advanced programming skills in a .Net programming language are advantageously required with C # or Visual Basic. The following system components are also required for the operation of the PLCcom for S7 library: � Microsoft .net Framework 4.7.2 or higher � Microsoft .net 6.0 or higher � Microsoft .net 7.0 or higher � Microsoft .net 8.0 or higher � A development environment that is compatible with .net Standard 2.1 (e.g. Xamarin)

To execute the included examples you need to have � Visual Studio 2019 or higher � A code editor compatible with .net framework

Important notes for using PLCcom with S7-1200/1500 controllers

Prerequisites for the classic way

It is possible to access inputs, outputs, flags, and accessible DBs. The access to a S7-1200 or 1500 is disabled by default. You have to process the following steps:

Allow the general access. Activate in the property settings section protection the option 'Connection mechanism - Allow access PUT/GET communication from remote partner. Enable access to your DBs. Go to DB properties and deactivate 'optimized access'. Load to PLC, done! If the changes don't have any effect, use 'extended download to device' to load to PLC.

Certain requirements must be met for symbolic access:

At least HMI access must be enabled in the controller without a password as a protection level. The controller must have been created with at least TIA version 17. If a data block has been created with a previous version, it must have been recompiled once with TIA from V17. At least the following firmware versions are required: S7-1200 from V4.5 S7-1500 from V2.9

Getting started

To get started with the PLCcom for S7 library, follow these steps:

1.Install the NuGet package: Install the PLCcomForS7 NuGet package into your project. You can find it in the NuGet package manager or by searching for "PLCcomForS7" in the NuGet package search. 2.Import the necessary namespaces: In your C# code, import the required namespaces from the PLCcom.Opc.Ua.Sdk package. For example:

using PLCcom;
using PLCcom.Core;

3. Enter your licence key

string LicenseUserName = "<Enter your UserName here>";
string LicenseSerial = "<Enter your Serial here>";

4. Create a PLCcom device instance and pass hostname or ip addresse and plc password

Tls13Device tlsDevice = new Tls13Device("192.168.1.100","Password");

Usage

Reading data

// Which variables do you want to read?
ReadSymbolicRequest readRequest = new ReadSymbolicRequest();
readRequest.AddFullVariableName("DataBlock_1.ByteValue");
readRequest.AddFullVariableName("DataBlock_1.RealValue");

// Read from device
var readResult = tlsDevice.ReadData(readRequest);

Writing data

List<PlcCoreVariable> writeVariables = new List<PlcCoreVariable>();

//get a variable body for writing
var variableBody = GetEmptyVariableBody(tlsDevice,"DataBlock_1.ByteValue");
// Set the value and add the variable to the write list
if (variableBody != null)
{
    variableBody.Value = 1;
    writeVariables.Add(variableBody);
}

//get a variable body for writing
variableBody = GetEmptyVariableBody(tlsDevice,"DataBlock_1.RealValue");
// Set the value and add the variable to the write list
if (variableBody != null)
{
    variableBody.Value = 123.456f;
    writeVariables.Add(variableBody);
}

// create a write request
WriteSymbolicRequest writeRequest = new WriteSymbolicRequest(writeVariables);

// write to device
var writeResult = tlsDevice.WriteData(writeRequest);

Subscribing to data changes

//Create a new non activated subscription with a 300ms cyling period
CreateSubscriptionRequest createSubscriptionRequest = new("TestSubscription", 300);

// Which variables do you want to subcribe?
createSubscriptionRequest.AddFullVariableName("DataBlock_1.ByteValue");
createSubscriptionRequest.AddFullVariableName("DataBlock_1.RealValue");

//create the subscription
CreateSubscriptionResult createSubResult = tlsDevice.CreateSubscription(createSubscriptionRequest);

PlcSubscription subscription = createSubResult.GetSubscription();

//register variable change handler
subscription.VariableChange += Subscription_VariableChange;

//register the new subscription with Plc
RegisterSubscriptionResult registerSubscriptionResult = tlsDevice.RegisterSubscription(new RegisterSubscriptionRequest(subscription));

Console.WriteLine($"Subscription {subscription.SubscriptionName} registered!");

Additional documentation

To provide feedback or report issues, please use the ressorces of your download packet. The online class documentation can you find here: https://www.indi-an.com/help_s7/net/help/index.html

Feedback

To provide feedback or report issues, please write an email to support@indi-an.com: