Common problems with Beckhoff TwinCAT2 (FAQ) - How to run multiple TwinCAT programs on the same PC

Right-click the TC2 icon in the lower right corner of the desktop, switch to PLC Configuration, and set the

number to 4 in Plc Settings (the maximum number of TC2s that can run is 4), then click Apply


You may need to enter your login username and password, and click "Finish"


Click Activate Configuration to restart TC2 System Manager


Click Online in the specific program, and choose one of the four PLCs by selecting Run-Time System


To show the difference, create another PLC program and select another port (you can also set a

different scan period)


From the execution results, it can be analyzed that these two sets of PLC programs are independent

of each other.



Right-clicking the desktop icon again can also start or stop any PLC program individually