Drive communication errors
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Drive communication errors
Last updated: 2025-12-22
Post by mait-tim on Drive communication errors
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With a machine I'm working with i get a communication error when I'm updating some softstop limits. As soon as I update the code the drives do not want to operate. Using the MC_readStatus I'm receiving errors as soon as i want to start a movement. Using MC_ReadAxisError i see that i receive error 131, no response. With a SMC3_ETC_ReadParameter_CoE i do not recieve any driver errors. Does anyone know how i can figure out what the error is and how to solve it. When i go back to the old software no errors occur. Im working with a legacy machine running a Beijer PLC with some Mitsubishi drives. running on Codesys 3.5 SP10. the runtime version is probably 3.5.3. The drives are all Ethercat Drives (CoE). All using the SM3_drive_ETC libary and the SM3_basic library.
Last updated: 2025-12-22
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Post by gseidel on Can't get SMC_SmoothPath to work
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Hi bertus, thanks for the additional information. Setting bAbort on a restart is not needed. Calling all FBs starting from the decoder up to checkvelocities with bExecute = FALSE and then giving a new rising edge on bExecute is what should be done. Do you also restart the Interpolator? (I don't think that has anything to do with the issue, but still...) Best regards, Georg
Last updated: 2025-12-23
Post by gseidel on Scara3 kinematic robot error
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Hi aniket-b, this error has nothing to do with the scara3 kinematics, or robotics, or SoftMotion. It means that the EtherCAT bus is not synchronized. The usual cause is that the realtime of the PLC is not sufficient. See https://content.helpme-codesys.com/en/CODESYS%20SoftMotion/_sm_basic_common_errors.html for details and ways to solve the problem. You can also check the PLC log for additional information about the error. Best regards, Georg
Last updated: 2025-12-23
Post by aniket-b on Scara3 kinematic robot error
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Thanks Georg for responding. I have followed the suggestion mentioned in the real time problem. However, it does not solve the problem. The weird part is, the robot stops at the same position randomly and it does not stop when I increase the speed of the motion.
Last updated: 2025-12-23
Post by eschwellinger on Scara3 kinematic robot error
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hi, which plc are you using? is it realtime capable? Linux with preempt rt or Control RTE on Windows?
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Post by kingsley on CODESYS Forum Migration discussion
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Please am new on this forum, for months u have been trying to link my virtual codesys with ignition scada Maker edition using OPC UAExpert but it has been frustrating over several months. please ssomeone can assist me
Last updated: 2025-12-25
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This night, the forum migration has finished. Even during the migration, the system was already available, and quite a few people already started to use it. We heartly welcome all forum members on the new platform. Data Conversion We took quite a big effort in the correct conversion and migration of the data. Anyway there are always chances, that some users are not migrated or posts got corrupted. If you encounter any anomalies, please let us know throught the support tracker in the footer of the web page. We do our best to correct it as far as it is possible on the new platform. Quick Start The basic handling of the new forum should be intuitive for users, who are used to our old CODESYS Forum. You will learn the differences and new features over time. I'd recommend to start by subscribing to the forums in which you are interested. To do so, select the forum and click on the "subscribe" link at the top of it. You will then get informed by E-Mail about changes. Open Source Hosting The Forum is just one part of CODESYS Forge. A main intent of the platform is to help developers and machine builders to collaborate on software development with CODESYS. One growing part of this newly created software is CODESYS related open source software. So we welcome and encourage you all, to share your own drivers, projects or tools under an open source license with us. And for sure, have fun with the new platform.
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Post by kingsley on CODESYS Forum Migration discussion
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Good morning
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Post by mil581 on Modbus TCP Server connection is ESTABLISHED but all holding registers are value 0?
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Hello everyone! I'm facing a weird issue with CODESYS Control Win V3 x64 on a fresh Windows install. The situation is as follows: CODESYS Modbus TCP Server (Slave) is running and I can see live values in the mapping display of Modbus settings: GVL (e.g., 32, 42, 50). Port 502 is LISTENING according to netstat. When connecting via Modbus Poll or Node-RED, the connection status changes to ESTABLISHED and everything reports as fine. The Problem: Despite the successful connection, all holding registers return 0 no matter what. It's like the OS accepts the TCP handshake, the request counter goes up but the data payload never reaches Modbus Client (in this case Node-RED or Modbus Poll). Quick Stats: Firewall: Completely OFF. Unit ID: Verified & Matching. IP: Tried 127.0.0.1 and 192.168.0.1. Interface: Correctly bound in Ethernet Device settings. I already tried absolutely everything from changing IP address, subnet, port, deleting the project and starting new one and even nuking my old Windows install. Since I am near completion of my bachelor thesis only thing left for me to do is connect SoftPLC to NodeRED via Modbus but this issue is driving me crazy for weeks. I do not know what to do anymore.
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