Hardware - twinControls Forum

Running TwinCAT3 on PC with Intel Hyper Threading technology

Simone71 — Sat, 30 Aug 2025 21:31:15 +0000

Hello,

I'm running TwinCAT 3 on a HP Laptop with an Intel Processor (Core Ultra 9 185H) with Hyper Threading Technology. The processore has 16 physical core and 22 Threads thanks Hyper-Threading (that means the Processor works as 22 cores, although the real ones are 16).

In my TC Projects, in System/Real-Time I see actually 22 cores.

Does someone knows if this configuration can interfere with Real-Time capabilities?

In other word, is it recommended to disable Hyper Threading Technology?

The TwinCAT version is 4026.18.0

OS is Win11

Thank you,

Simone

Issue with Modbus TCP Communication Between Two CX9020 Beckhoff PLCs (Master/Slave Setup)

sam patel — Wed, 18 Jun 2025 09:01:02 +0000

Hello everyone,

My name is Sam, and I am currently working on a project involving two Beckhoff CX9020-0115 PLCs. Both PLCs are equipped with a Modbus TCP/IP license. I’m trying to perform a communication test where:

And the library that I used is TF6310.

PLC1 (IP: 169.254.232.100) is configured as the Modbus TCP Master
PLC2 (IP: 169.254.232.101) is configured as the Modbus TCP Slave

I have written the Structured Text (ST) code for the master side and attempted to run both PLCs online (using TwinCAT 3 on two different projects). However, I am not receiving any data from the slave side, and I’m unsure where the issue lies—whether on the master or slave configuration/code.

Has anyone here successfully set up Modbus TCP communication between two CX9020 PLCs before? I’d really appreciate if someone could share insights, example code, or even just tips on what to double-check (e.g., mapping, ports, enabling server, etc.).

Any help would be highly appreciated.

Best regards,
Sam

Slow ModbusRTUmaster

paulwu — Tue, 21 Jan 2025 11:08:05 +0000

We noticed that, when using ModbusRTUmaster, to communicate with our modbus devices, the PLC introduce 6 PLC cycle delay, above and beyond the actual modbus transfer (RS-485). Does anyone knows why such unnecessary delay in the function block?

BTW, Beckhoff refused to explain the delay, and cited it as we are NOT privy to such information.

EK1200 & CX9020 Information

imnisarahmed — Wed, 10 Jul 2024 07:04:27 +0000

Dear Experts,

I am new to the Beckhoff world and recently received a Beckhoff PLC program from a supplier.

The program shows EK1200 one terminal module as an EtherCAT Power supply (2A E-bus). However, when I searched on Google, I couldn't find any relevant information, and the Beckhoff website also doesn't provide any documentation or information for the EK1200. The only mention I saw was in the CX9020 manual, where it is described as a bus coupler.
Question: Please support where can I find detailed information about the EK1200?

Additionally, we have a CX9020 embedded PC installed in the panel along with other terminal modules, but I can't locate it in the hardware configuration within TwinCAT 3.
Question: Please advise on where I can find the CX9020 in the program.

830

Best regards,
Ahmed

Twincat 4026 XAR

Alex — Tue, 11 Jun 2024 10:00:50 +0000

Hello twincat's coders,

Have you tried installing twincat XAR

USB inserting

Alex — Fri, 31 May 2024 08:51:34 +0000

Hello,

I would like to know how to get a signal when inserting a USB key ?

I d like to start just after the inserting.

Happy coding,

SMC JXCE1

BradCor — Mon, 20 May 2024 12:29:33 +0000

I have a machine I am setting up with two SMC JXCE1 motor drivers. the ESI file has been imported but the motor driver doesn't match the standard motor layout at all and cannot be connected to twincat motion axis.

has anyone had any experience with these drives before. I am starting to look into writing my own driver to switch bits on and off but would be nice if some one had an example or library to speed things up?

823

Measure 12VDV value

sylwos — Fri, 26 Jan 2024 10:14:13 +0000

Hi everyone, I have to measure level of voltage from -12 to 12V its possible do it using analog input that have range from 0-10V?

Command a Motor (kollmorgen AKM11E) with TwinCAT and an EPOS2 in CANOpen with an EL6751 module

Mildred34 — Mon, 18 Dec 2023 15:51:54 +0000

Hello,

I'm self training on TwinCAT.

I was trying to command a brushless dc motor (kollmorgen AKM11E) with an EPOS2 (Maxon) using the CanOpen module EL6751.

My PC is a Beckhoff CX5230.

I got an error that I don't explain. I followed the document called EPOS2-Application-Notes to send a target position in a mode called Profile Position Mode.

The steps are the following :

Set the Profile Position Mode (set to 1 in my case) ; Address : 0x6060-00
Shutdown the Controller with the controlword to 6 ; Address : 0x6040-00
Switch ON and enable the controller by setting the controlword to DEC: 15 / HEX: 0x000F
Set a Target Position in qc
Start Positioning by setting controlword to 0x001F / 31

Variables Used:

Modes of Operation ; Address : 0x6060-00
controlword ; Address : 0x6040-00
Target Position ; Address : 0x607A-00

In TwinCAT, when I set the target position, it will automatically disable my controller.

When i re-enable it, I can send it back wit the same value and it will work. But when I want to change the value, it disables again the controller.

If I do the sames steps but within Epos Studio which is the software to configure the Motor provided by Maxon. In that set-up the EPOS2 is connected in USB with my computer. That way, it works without re-enabling each time, I want to change my command.

Do you know what I did wrong ?

Best regards,

Alexis

Bentley Nevada 3300 Proximitor

khanhnguyen219 — Fri, 22 Sep 2023 02:20:38 +0000

I had a task to connect between Bentley 3300 proximitor as a Keyphasor to the EL 1502 card to read its output signal. The funny thing is that Proximitor use negative DC source.

I'd like trying to connect 24V to COM and 0V to -Vt, is that possible and how goes the output signal?

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