Motion controller solution discussion

beyond_笑谈

Motion controller solution discussion [Copy link]

In the early years, motion controllers were mainly monopolized by foreign companies, such as Siemens, Beckhoff, etc.

Now some large domestic companies have launched motion controllers, such as Huichuan, Xinjie, etc.

Most domestic motion controllers are developed based on the CODESYS platform, and some are based on other platforms (like CODESYS, based on the IEC61131-3 standard).

Let’s discuss:

Do you use motion controllers? Do you buy off-the-shelf products or develop your own? If you use off-the-shelf products, what brand do you use? Is it based on CODESYS or other platforms? Briefly describe the application requirements and application areas.

beyond_笑谈

The current mainstream motion controller communicates via EtherCAT. I understand that it is difficult for domestic motion controllers to achieve a synchronization period of 500us or 250us. Has anyone used a motion controller with a synchronization period of 500us or 250us?

laker2008

Um, it sounds like a very professional thing. I have never used it, so I looked it up on Baidu to find out what it is used for. It is a very advanced thing.

beyond_笑谈

laker2008 posted on 2024-5-15 15:20 Well, it sounds very professional. I have never used it. I specially searched on Baidu to find out what it is used for. It is a high-end thing.

Industrial fields, such as automated production lines, machine tools, laser cutting, etc., will use

bigbat

laker2008 posted on 2024-5-15 15:20 Well, it sounds very professional. I have never used it. I specially searched on Baidu to find out what it is used for. It is a high-end thing.

Strictly speaking , a motion controller is a special PLC, and a PLC is a special MCU system. PLC can control a wider range of things. A motion controller can be regarded as a PLC with motion control function.

The main structure of the current motion controller is: "motor control module + communication module" plus a PLC or other control software.

Motor control module: drive module + MCU control module

This nesting doll structure is the motion controller.

Codesys is a software system that implements a full set of PLC software, including PC programming software and MCU system control software. Codesys complies with the IEC61131-3 specification and is also customizable. However, the price is relatively high, and many domestic PLC companies use this system, so the programming features and functions tend to be more homogenized.

beyond_笑谈

bigbat posted on 2024-5-17 09:36 Strictly speaking: motion controller is a special PLC, PLC is a special MCU system, PLC can control a wider range. Motion controller can be seen...

That's what it means. It is also called Soft PLC now, which integrates motion control, logic control, and communication functions. The programming language is similar to PLC, ladder diagram, ST, function block, instruction table, etc.

dukedz

Self-developed. Currently, low-end communications on the market use CAN and 485 interfaces, while high-end communications use ethercat.

The low-end performance is not good. The above mentioned the problem of synchronization cycle, and the high-end is too complicated and the price is outrageous. The project cycle will be very long.

So I would choose the enhanced version of 485 communication, taking into account simplicity, performance, reliability and low cost:

https://bbs.eeworld.com.cn/thread-1267965-1-1.html

beyond_笑谈

dukedz posted on 2024-5-22 10:00 I developed it myself. Currently, the low-end communication on the market uses CAN and 485 interfaces, and the high-end uses ethercat. The low-end performance is not good. The above mentioned...

Nowadays, motion control mainly uses EtherCAT, but it is difficult to use. It took about a year to develop the last version of the motion controller.