CANBUS PDO I/O Mapping problem

2020-02-27T15:58:20.984000Z

bmunsil hat geschrieben:
could you extract and make an image out of what you are using? I would be able to better help if I can see what and how you have it configured.

Hi bmunsil.

The problem is solved now, it was because of the kernel version.

Thank you so much.
Best regards.

CANBUS PDO I/O Mapping problem

2020-02-27T15:58:18.809000Z

jmrodriguez hat geschrieben:
Hello bmunsil.
I'm trying to have communication CAN between Codesys and my Raspberry Pi 3 with the instruction of this forum l viewtopic.php?t=5611 l but at the end my Can doesn't work. I think it could be because when I use the instruction 'modprobe spi-config...' it says “modprobe:FATAL: Module spi-config not found”.
Could you help me please?

could you extract and make an image out of what you are using? I would be able to better help if I can see what and how you have it configured.

CANBUS PDO I/O Mapping problem

2020-02-27T15:58:18.034000Z

bmunsil hat geschrieben:
I am currently using a Rpi2 + PiCan I would more than welcome helping you get started. to be honest there is a really good post that explains the methods that are used to get socket can compiled into the kernel. I do have an image of a working version that I would be willing to send you if you so choose.

Hello bmunsil.

I'm trying to have communication CAN between Codesys and my Raspberry Pi 3 with the instruction of this forum l viewtopic.php?t=5611 l but at the end my Can doesn't work. I think it could be because when I use the instruction 'modprobe spi-config...' it says “modprobe:FATAL: Module spi-config not found”.

Could you help me please?

CAN PROBLEM.pdf [151.24 KiB]

CANBUS PDO I/O Mapping problem

2020-02-27T15:58:15.778000Z

I am currently using a Rpi2 + PiCan I would more than welcome helping you get started. to be honest there is a really good post that explains the methods that are used to get socket can compiled into the kernel. I do have an image of a working version that I would be willing to send you if you so choose.

CANBUS PDO I/O Mapping problem

2020-02-27T15:58:14.915000Z

Hello bmunsil,

Seeing project is the same as me regarding CAN.
RPI3+PICAN.

Can you help me to start CAN on my project.

thks

CANBUS PDO I/O Mapping problem

2020-02-27T15:58:14.145000Z

Edwin Schwellinger hat geschrieben:
Hi,
which index do you mean.
You need to add a mapping and use the varibales in the POU's.
BR
Edwin

no, I answered my own question. I wasn't sure if I needed to set an SDO analog interrupt for each of the analog inputs or not but after some testing I know that I do not. Thanks for your time. Everything is working as expected.

CANBUS PDO I/O Mapping problem

2020-02-27T15:58:11.965000Z

Hi,
which index do you mean.
You need to add a mapping and use the varibales in the POU's.

BR
Edwin

CANBUS PDO I/O Mapping problem

2020-02-27T15:58:11.212000Z

thanks for the quick reply. adding the Analogue Input global interrupt enable worked. I have one question, do you need to set an index for each of the analog inputs? or will this handle all of the analog inputs? I apologize for my lack of knowledge on PDO/SDO, I am using Codesys as my learning platform.

CANBUS PDO I/O Mapping problem

2020-02-27T15:58:09.032000Z

Hi,
I would add the global analogue Interrupt Register to the Startup SDO list,
See screenshot.
BR
Edwin

CANBUS PDO I/O Mapping problem

2020-02-27T15:58:08.258000Z

Edwin Schwellinger hat geschrieben:
Hi,
i have two remarks:
1.For these analog terminals do you enable the Interrupt Register (by SDO) otherwise no values come out of these terminals.
2. CODESYS only update the values if they are mapped and used in the POU's.
BR
Edwin

yes they are mapped and used. the analog signals show up as if they are ready but they never update. I did have this working at one point but I lost my configuration and have not been able to recreate what worked. as for the interrupt register, I have nothing but default set.

UPDATE: ok I apparently didn't have the higher 8 inputs and outputs being used. they are now working. the analog is still not functioning. thank you for your time.

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