Let's talk about PLC industry ^{CODESYS Forge talk (Thread)}
Let's talk about PLC industry
Last updated: 2020-08-14

Remote PLC, HMI software development. ^{CODESYS Forge talk (Thread)}
Remote PLC, HMI software development.
Last updated: 2015-06-05

Modbus Funktionen mit PLC Programm ^{CODESYS Forge talk (Thread)}
Modbus Funktionen mit PLC Programm
Last updated: 2007-09-12

New PLC benchmark test ^{CODESYS Forge talk (Thread)}
New PLC benchmark test
Last updated: 2006-06-22

CodeSys can't start plc at systray ^{CODESYS Forge talk (Thread)}
CodeSys can't start plc at systray
Last updated: 2021-03-23

Automatic alarm export on PLC ^{CODESYS Forge talk (Thread)}
Automatic alarm export on PLC
Last updated: 2023-05-04

PLC Crushes after some time ^{CODESYS Forge talk (Thread)}
PLC Crushes after some time
Last updated: 2022-05-26

Connecting to PLC via Teamviwer VPN ^{CODESYS Forge talk (Thread)}
Connecting to PLC via Teamviwer VPN
Last updated: 2023-02-25

PLC IFMCR2532 <-CAN-> CR0451 ^{CODESYS Forge talk (Thread)}
PLC IFMCR2532 <-CAN-> CR0451
Last updated: 2018-08-25

Configuration of Channels on PLC became ^{CODESYS Forge talk (Thread)}
Configuration of Channels on PLC became
Last updated: 2022-05-25

Communication error PC-PLC ^{CODESYS Forge talk (Thread)}
Communication error PC-PLC
Last updated: 2006-06-23

Comunication between two plc Wago ^{CODESYS Forge talk (Thread)}
Comunication between two plc Wago
Last updated: 2009-05-25

CodeSys can't start plc at systray ^{CODESYS Forge talk (Thread)}
CodeSys can't start plc at systray
Last updated: 2021-03-24

Remote connection to ifm PLC & HMI ^{CODESYS Forge talk (Thread)}
Remote connection to ifm PLC & HMI
Last updated: 2024-04-11

Start *.exe through PLC progem ^{CODESYS Forge talk (Thread)}
Start *.exe through PLC progem
Last updated: 2024-04-17

PLC Login Credentials Suddenly not Working ^{CODESYS Forge talk (Thread)}
PLC Login Credentials Suddenly not Working
Last updated: 2024-04-22

Remote connection to ifm PLC & HMI ^{CODESYS Forge talk (Thread)}
Remote connection to ifm PLC & HMI
Last updated: 2024-04-23

Read Serial Number of PLC ^{CODESYS Forge talk (Thread)}
Read Serial Number of PLC
Last updated: 2024-05-21

Data source and safety PLC ^{CODESYS Forge talk (Thread)}
Data source and safety PLC
Last updated: 2024-06-17

Hardware compatibility with Linux RealTime PLC ^{CODESYS Forge talk (Thread)}
Hardware compatibility with Linux RealTime PLC
Last updated: 2026-06-15

Post by transmin01 on PCAN serial "No CAN driver found" ^{CODESYS Forge talk (Post)}
Hi, I am using a PCAN mini CAN board which has the Windows drivers installed on the target PLC. PCAN board can be seen in device manager. However, I am getting "No CAN driver found" error. I have read the post https://forge.codesys.com/forge/talk/CODESYS-V2/thread/44aae19318/ and have uncommented the CmpPCANBasicDrv driver in the CodesysControl.cfg file in development PC and have copied it to the target PC. Current CodesysControl.cfg file attached. Is there anything else I am missing? Regards
Last updated: 2023-09-14

Post by astutoski on No Motion with SM3_RaspiStepper (GPIO 23/24 Show No Pulses) ^{CODESYS Forge talk (Post)}
Hi everyone, I’m completely new to CODESYS and have been teaching myself. And i Want to control an Axis using SM3RaspiStepper. Following the example on the RaspiStepper home page, I set up an axis through a POU and tied the SMC_StartupDrive (Visu) template to my axis instance (sud). Unfortunately, the motor never moves and I don’t see any pulses on the PULSE pin (GPIO 23). Hardware -Raspberry Pi 4 B -Nema 17 stepper motor -A4988 stepper driver (EN pin permanently tied to GND) Software / Runtime -CODESYS 3.5 SP21 Patch 1 – Raspberry Pi runtime (demo) -SoftMotion in demo mode -Package: SM3_RaspiStepper 0.0.0.6 Axis parameters: Pulse pin GPIO 23 Direction pin GPIO 24 Enable pin 0 (unused) Disable pin 0 (unused) Whether I start the axis from the visualization template or through Online Config Mode, the motor never spins. In Online Config Mode I press Power → the state changes from Standstill to Discrete_Motion, but the motor shaft is still locked and no step pulses appear on GPIO 23 (checked with a scope). I can provide screenshots of the Visualization, PLC logs, or wiring pictures if that helps. Any ideas on what I might be missing? Happy to provide screenshots, project files, or scope captures if that helps. Thanks in advance!
Last updated: 2025-06-25

Post by gregorpl on Tosibox With EATON XV300 ^{CODESYS Forge talk (Post)}
HEllo, I need to connect with PLC XV300 , the problem is for me not simple. The PLC have remote control by Tosibox VPN tunel. I can see the screen from PLC, but i also want to se Input and Output the PLC . I try to scan the network by useing tosibox Gateway but its not working. Where i should looking the problem ? DO i need added special library ?
Last updated: 2024-03-12

Post by gilbert-mh on CAA net base TCP client cause PLC to crash - Kernel message : N0HZ_local_softirq_pending 80 ^{CODESYS Forge talk (Post)}
Hello all, I have been trying to implement a TCP client on a Festo PLC (CPX-E-CEC-M1) and it looks like it works well except that after some time (greatly varies between a few hours to more than 100h) my PLC crash. When I look into the log file the only thing I see is that before the crash happens a few kernel warnings : N0HZ_local_softirq_pending 80 and then the crash. I've looked into this warning and from what I could find on the net it seems that this is warning is triggered when the ethernet link is down. I've tried to correct this bug for quite some time and what I know is that : - The crash is caused by my TCP client, when I remove it from my code I see no crash - The crash happens more quickly the more the TCP client is used. - The time before the crash is not directly proportional to the number of communications or their size. But it looks like it is just more likely to happen if the client connect to the server at a higher frequency. - The precedent observation makes it seem unlikely that the crash is caused by some memory overflow because then the crash speed would be more proportional to the amount of data exchanged. SO from these observations, I believe that the crash could be caused by the PLC trying to connect to a server while there is some kind of issue with the ethernet link resulting in the PLC getting stuck in some indefinite state and making it crash. This still seems a bit unlikely to me because if the ethernet is down it simply shouldn't be able to contact the server and the communication would just fail which doesn't cause my PLC to crash. Has anyone encountered the same kind of problem (with the same kernel message) ? I am pretty sure the warning is not the direct cause of the crash but just an indicator that something is wrong with my PLC. Thanks in advance
Last updated: 2024-01-12

Post by eschwellinger on How to Connect / Go Online without re-downloading the project ^{CODESYS Forge talk (Post)}
Which plc type is it: Either use Automationserver to do this or save the project archives instead of projects or use the source dowload function and reopen the application from plc. So you need to chose one of them.
Last updated: 2024-04-13

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