wiki Discussion
herve
wiki
(Discussion)
Forum for wiki comments
Last updated: 2024-01-12
blog Discussion
herve
blog
(Discussion)
Forum for blog comments
Last updated: 2024-01-12
(no subject)
herve
wiki
(Thread)
Last updated: 2024-01-12
Home
herve
wiki
(WikiPage)
Project Members: herve (admin)
Last updated: 2024-01-12
Post by anderson on PWM To analog
CODESYS Forge
talk
(Post)
ja aproveitando a discussão, eu estou com um problema relacionado ao uso da biblioteca OSCAT. estou tentando usar o bloco pwm, porém nao consigo executar.nao tem uma entrada para a função execute
Last updated: 2024-01-12
Post by anderson on function block output
CODESYS Forge
talk
(Post)
eschwellinger consegui um bloco para pem na biblioteca oscat,mas nao consigo executar o bloco. o que esta errado? segue em anexo a imagem do bloco.
Last updated: 2024-01-12
function block output
CODESYS Forge
talk
(Thread)
function block output
Last updated: 2024-01-12
PWM To analog
CODESYS Forge
talk
(Thread)
PWM To analog
Last updated: 2024-01-12
wiki Discussion
gilbert-mh
wiki
(Discussion)
Forum for wiki comments
Last updated: 2024-01-12
blog Discussion
gilbert-mh
blog
(Discussion)
Forum for blog comments
Last updated: 2024-01-12
Post by eschwellinger on Problem install codesys 3.5.17 SP 30 with Codesys Installer
CODESYS Forge
talk
(Post)
we need to fix this I see no workaround..hope will be solved next week!
Last updated: 2024-01-12
CAA net base TCP client cause PLC to crash - Kernel message : N0HZ_local_softirq_pending 80
CODESYS Forge
talk
(Thread)
CAA net base TCP client cause PLC to crash - Kernel message : N0HZ_local_softirq_pending 80
Last updated: 2024-01-12
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
Home (version 10) discussion
Home Project for Users
wiki
(Thread)
Home (version 10) discussion
Last updated: 2024-01-13
Home (version 1) discussion
t-probst
wiki
(Thread)
Home (version 1) discussion
Last updated: 2024-01-12
Home
gilbert-mh
wiki
(WikiPage)
Project Members: gilbert-mh (admin)
Last updated: 2024-01-12
(no subject)
gilbert-mh
wiki
(Thread)
Last updated: 2024-01-12
General Discussion
walyeast
discussion
(Discussion)
Forum about anything you want to talk about.
Last updated: 2024-01-13
blog Discussion
walyeast
blog
(Discussion)
Forum for blog comments
Last updated: 2024-01-13
wiki Discussion
walyeast
wiki
(Discussion)
Forum for wiki comments
Last updated: 2024-01-13
(no subject)
walyeast
wiki
(Thread)
Last updated: 2024-01-13
Home
walyeast
wiki
(WikiPage)
Project Members: walyeast (admin)
Last updated: 2024-01-13
Home (version 1) discussion
mark-stillman
wiki
(Thread)
Home (version 1) discussion
Last updated: 2024-01-13
Home (version 1) discussion
obanaiiguro
wiki
(Thread)
Home (version 1) discussion
Last updated: 2024-01-13
Home (version 1) discussion
romainldc
wiki
(Thread)
Home (version 1) discussion
Last updated: 2024-01-13