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Questions tagged [twincat]

TwinCAT is a PC-based PLC automation software package made by Beckhoff Automation.

TwinCAT is a PC-based PLC automation software package made by Beckhoff Automation.

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421 questions
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1 answer

Implement a Read_I_Point FB in TwinCAT 2 BeckHoff PLC

What I want to do is to create a FB to read the signal of input point when it is given a TAG NAME. For example, if the tag name is "I_motor_sensor", so "I_motor_sensor" is send to Read_I_Point FB, then the FB will give the current status back. So…
Sunh Hao
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Simulink to TwinCAT 3 code export

I am trying to export Simulink to TwinCAT 3.I have followed the TwinCAT 3 Simulink-TwinCAT interface user manual and executed the same procedure as decscribed. I am using windows 10 (x64) but while building simulink it's throwing an error,saying…
venkat reddy
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Beckhoff CX9020 - Can't establish a connection with TwinCAT 3

I've got a Beckhoff CX9020 module with the following informations (as seen in General Tab in the CX Configuration Tool): System Information: Device Name: CX-xxxxxx Image Version: CX9020 HPS 5.02d CXConfig Version: 1.0 (Build 73) CPU Frequency: 1000…
FlKo
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Publish and subscribe variables between twincat 2 and twincat 3

I need to send a variable via ethernet from a Twincat 3 to a Twincat 2. Is it possible? How could I do that?
JosepB
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TwinCAT 3 Task Start/Stop from PLC

I need to run some code every time the PLC starts. This code should only be run once and then never again until the PLC is restarted. I initialize some global variables and validate the persistent data before allowing the main PLC to run. This is…
DevLocus
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c# twincat passing argument to class constructor

I wonder what is the best way. If I need to pass a class to a class constructor why should I use a variable inside my class. Example: using Beckhoff.App.Ads.Core.Plc; Class test() { private static IBAAdsServer AdsServer; private static…
JudgeDreed
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Use pyads library in multiple python processes in parallel

I've imported pyads (Python lib to communicate through the TwinCAT library with TcAdsDll.dll. I've read here that this library has multi-threading capability. Is it also possible to use the pyads library in multiple processes without conflict? To…
David Zwart
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How to know if it is a reader in a delegate event callback?

I have a question about callback. I have two forms(VS2010). I have made a class that raise an event when the ''valueIN'' change. I set a delegate in my class so that any Form can get the ValueIN when it changes. The problem I create the Form2…
JudgeDreed
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Publish Procedure Failed - Simulink code generation with TwinCAT Target file

I would like to develop an application in Matlab/Simulink which will be integrated in TwinCAT by TcCOM modules (code generation with TwinCAT.tlc target file). I have some problems in the PUBLISH PROCEDURE!!! First of all, I have to mention that I…
ferko
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where can I find tcadsdll.dll?

I am running an example application using TwinCAT ADS communication system, got from a colleague. When I give the command to connect to ADS, error ' fail to load tcadsdll.dll file ' appears; I have looked for it on the web but din't find
Danich56
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Change system time of Beckhoff controller by programming

For the last couple of hours, I am facing problems with changing system date and time by structured-text programming. I have used function block FB_LocalSystemTime where I can read the system time. But I could not find any function or function block…
krishna
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Frequency calculation in Beckhoff TwinCAT3.1

I am trying to determine the frequency of a pulsing input, which is tacho feedback of a pump. I have tried to create two timers which are a second each, and counts up every time there is rising edge. Based on the number of rising edges in a second,…
Vinny
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explanation about NT_GetTime in twincat/beckhoff plc

Can I have explanation about this function block and its parameters (timeout: what is it for, busy: when it will be true and false)?
Ahmad Z. Tibi
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TwinCAT 2.11: Set Config/Freerun-Mode with Win32-Application

I am using TwinCAT I/O 2.11 on Windows XP SP2. With the .NET-Library "TwinCAT.ADS" I already managed to read and write Inputs/Outputs (mapped objects from the device on the EtherCAT bus). But of course this only works when TwinCAT is in Freerun or…
user3297416
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TwinCAT 3, Using Methods for internal FB functionality or just for interfaces?

I´m old users of Beckhoff technologies, especially TwinCAT. At the moment, we are suffering a transformation of our PLC architectures due to the new functionality that are bring by TwinCAT 3 (Object Oriented) At the moment we are developing our new…
OscarSanhueza
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